NEET Daily Practice Papers - Biology - Living World

A prediction made by a scientist based on his observations is known as

Study of flowers is known as

Choose the correct pair: (a) Sericulture – Fish (b) Silviculture – Silkworm (c) Apiculture – Honeybee (d) Pisciculture – Forestry

Biology is concerned with

The art of growing short plants is called

The study of acquired characters of animals and plants is called

Branch connected with study of cell structure is

The study of trends in human population growth and the prediction of future development is known as

Study of relationship between environment and plants animals or human is

The study of development of an organism from the egg to the adult stage is known as

Science of characters and distribution of races is known as

Study of cause of disease shall come under

Genetic engineering is connected with

Improvement of human race by improving the environment is called

Exobiology refers to study of

Inland fisheries is

Branch of biology which deals with the study of the process of ageing is called

Study of liver is known as

The study of reptiles is known as

The branch of study dealing with microscopic anatomy of tissues is

Branch of Zoology dealing with the study of fishes is known as

Ikebana is the art of

Which of the following pairs is mismatch: (a) Pedology – Study of soil (b) Kinesiology – Study of fossils (c) Limnology –Study of fresh water ecosystem (d) Physiology –Study of processes and functions of life

Study of form and structure of organisms is

Phylogentic evidence cannot be given by

The study of fungi is

Myology is the study of

Study of ants is

Olericulture is the cultivation of

Oncology is the study of

The study of eggs of birds is termed

Ornithology is the study of

Existence of coal and petroleum may be detected with the study of

Study of animals that live and subsist on other animals is

Pedology is the science of

The study of action of drug is known as

Phycology deals with the study of

Evolutionary history of a group of organisms is called

Obtaining silk from silkworms is called

Study of interaction of antigens and antibodies in the blood is

Who appears to have first used the term 'ecology' in 1886?

The term 'ecosystem' was proposed by?

The term 'biocoenosis' is coined by?

10% law of energy transfer in food chain was given by

The law of limiting factor was proposed by

Use and disuse theory was put forward by

"Pangenesis hypothesis" was propounded by

The concept of inheritance of acquired characters was developed by

The scientist who cut the tail of mouse in many generations but found that it is not inherited

Who prepared germplasm theory against Lamarck's principle of use and disuse

Study of Ticks and Mites is called

Who is famous in the field of palaeobotany

The pioneers in the field of 'Organic evolution' are

Who wrote the book 'Genetics and Origin of Species'

The recapitulation theory or biogenetic law was proposed by

Photophosphorylation was discovered by

First experiment related to the method of hydroponics were done by

The credit of applying a microscope for the first time for the study of biological object goes to

Christian Gram belongs to which country

Vaccination against smallpox was developed by

Cause of mimicry is

Melanin protects from

Reproduction of immature or larval stage of animals caused by the acceleration of maturation is called

Bones of birds are

Which is not aerial adaptation of birds

Which of the following is the main adaptation for a plant to survive in xerophytic condition

Some plants having pleasant odour and attractive colours for

Which of the following chemical characteristics is not common to all living beings

The most abundant element present in the plants is

Carbohydrates, the most abundant biomolecules on earth, are produced by

In ATP high energy bond is present

The type of linkage present in carbohydrates is

Animals spending winter in dormant conditions is referred as under

Pasteur succeeded in disproving the spontaneous generation theory because

An experiment to prove that organic compounds were the basis of life, was performed by

The first organisms to appear on earth were more like plants because

How has the free been released into the earth's atmosphere whereas there was no free at the time of origin of life

Which of the following was most likely to have been absent in free form in the primordial atmosphere at the time of origin of life

Nucleoprotein gave most probably the first sign of

The complex organic compounds that may have first evolved in the direction of origin of life on earth, may have been

Transformation experiments were done by

Mechanism of bacterial transformation was

The chemical nature of gene was discovered by

Double helical model for DNA molecule was proposed by

DNA replication of semiconservative type was first demonstrated by

The enzyme DNA polymerase was discovered by

Who was awarded Nobel Prize in 1959 for in vitro synthesis of polyribonucleotide

The first mammal clone 'Dolly' was created by

The technique by which 'Dolly' the sheep obtained is termed as

Recently cloned species is

Who appears to have first used the term 'ecology' in 1886

The term 'ecosystem' was proposed by

The term 'biocoenosis' is coined by

10% law of energy transfer in food chain was given by

'The law of limiting factor' was proposed by

Use and disuse theory was put forward by

"Pangenesis hypothesis" was propounded by

The concept of inheritance of acquired characters was developed by

The scientist who cut the tail of mouse in many generations but found that it is not inherited

Who prepared germplasm theory against Lamarck's principle of use and disuse

Study of Ticks and Mites is called

Who is famous in the field of palaeobotany

The pioneers in the field of 'Organic evolution' are

Who wrote the book 'Genetics and Origin of Species'

The recapitulation theory or biogenetic law was proposed by

Photophosphorylation was discovered by

First experiment related to the method of hydroponics were done by

The credit of applying a microscope for the first time for the study of biological object goes to

Christian Gram belongs to which country

Vaccination against smallpox was developed by

Who has developed the concept of phagocytosis in immunity

Hybridoma technology was developed by

William Harvey is known for the discovery of

Who is the 'Father of conditioned reflex'

Who was the first to record EEG

The term 'Hormone' was coined by

TCA cycle is named after

Bordeaux mixture was discovered by

Who wrote a memoir on the earthworm, Pheretima, to describe its morphology and anatomy

Who is referred to as 'Father of pearl industry'

Nobel Prize was awarded to Paul Muller on discovery of which of the following pesticides?

Amniocentesis detects

Amniocentesis is a technique used for

Amniocentesis is the withdrawal of amniotic fluid during

Amniocentesis involves the analysis of

Non-poisonous leeches were used for preventing the clotting of blood in the post operative cases during 600 BC by

Aquaculture does not include

Haematology is the study of

Which German physicist invented the electron microscope which won him 1986 Nobel Prize in Physics?

Who was the first Indian to be awarded the world food Prize in 1987?

Which of the following scientists was a breeder (plant breeder)?

The study of relationship between size and shape is called

Study of behaviour of animals is called

The branch of biology which deals with the study of processes and functions of an organism is called

The living steady state has a self-regulatory mechanism which is

Birbal Sahni was a

Which branch studies about remains of plant life?

Tallest angiosperm is

Smallest flower is

Fossilization would occur when flora and fauna are buried by

The branch of biology dealing with structures, function and reproduction of cell is

Which of the following are characteristics of living things?

Organisms which display properties of both living and nonliving

The highest level of organization among the following is

The lowest level of organization among the following is

The smallest unit of an element that retains all the properties of the element is

In atoms, protons and neutrons are present

Which of these particles determine the chemical properties of an atom?

Which of the following substances does not play a role in normal human physiology?

The ionization of a sodium atom to produce is an example of

Which of the following is a trace element required only in small amounts by most living things

Your body contains the smallest amount of which of the following

Role of molybdenum is

Atoms combine in chemical reactions to form

Atoms share electrons unequally in a/an......bond

Maximum energy is required to break

What type of energy is present in a covalent bond

Where are hydrogen bonds important to life

A solution that resists changes in pH is a/an

Of the following choices, the pH of the least acidic solution is

Which branch study about remains of plant life?

Tallest angiosperm is

Smallest flower is

Fossilization would occur when flora and fauna are buried by

The branch of biology dealing with structures, function and reproduction of cell is

Which of the following are characteristics of living things?

Organisms which display properties of both living and nonliving

The highest level of organization among the following is

The lowest level of organization among the following is

The smallest unit of an element that retains all the properties of the element is

In atoms, protons and neutrons are present

Which of these particles determine the chemical properties of an atom?

Which of the following substances does not play a role in normal human physiology?

The ionization of a sodium atom to produce is an example of

Which of the following is a trace element required only in small amounts by most living things?

Your body contains the smallest amount of which of the following

Role of molybdenum is

Atoms combine in chemical reactions to form

Atoms share electrons unequally in a/an......bond

Maximum energy is required to break

An evolutionary explanation of the origin of plants and animals was given by

Which were dominant during mesozoic era?

The first mammals arose

In a bush pattern of evolution, the uppermost tips of the branches represent

A species that contains two or more sub-species are called

Animals living in colder region have shorter tail and ears as compared to the animals living in warmer regions. This phenomenon is called

Present day mammals have their predecessor in

In the developmental history of mammalian heart, it is observed that it passes through a two–chambered fish–like heart, three–chambered frog–like heart and finally four–chambered stage. To which hypothesis can this above cited statement be approximated

Some of the important evidences of organic evolution are

Evolution is regarded as

Fossil contents of the alimentary canal are termed as

Master plate in replica plating experiment contained the

Which of the following was expert in making tools, weapons, paintings etc. or Who drew excellent pictures of animals in caves, made tools, carved ornaments from ivory stone arrows etc.

Simian shelf is a characteristic of apes, which connects the

Which one of the following statements is correct regarding evolution of mankind

The term 'Fisheries' refers to

Which of the following subdivisions deals with fossils

In which of them, induced breeding is effective

The theory of 'continental drift' was originally proposed by

The hypothesis that all photosynthetic organisms require a source of hydrogen was first proposed by

Which of the following is not true for viruses?

To show host specificity is a

The virus of deoxyvira (sub-phylum) contains

'Viroids' differ from 'viruses' in being

Which one of the following statements is correct?

A substance (low molecular weight protein) produced by host cells in response to viral infection and protect other cells against further viral infection is

In phage (plaque) culture

In lysogenic state viral DNA

Aphid Acyrthosiphon transmit which of the following causal agent

Which of the following diseases are known to be caused by viruses? 1. Burkitt's lymphoma 2. Adult T-cell leukemia 3. Phenyl ketonuria

A single stranded DNA molecule is the genetic material of bacteriophage

The genome of transducing phages is

The most thoroughly studied of the known bacteria plant interactions is the

Flagella of prokaryotic and eukaryotic cells differ in

Which of the following statements is not true for retroviruses?

'Eternity of life' means

An evolutionary explanation of the origin of plants and animals was given by

Which were dominant during mesozoic era

The first mammals arose

In a bush pattern of evolution, the uppermost tips of the branches represent

Which one of the following sets represents the correct sequence of the evolution of man?

In recent years, DNA sequences (nucleotide sequence) of mt-DNA and Y chromosomes were considered for the study of human evolution, because

The early stage human embryo distinctly possesses

Which one of the following sequences is true?

Which of the following relates to the determination of age of the tree by counting the number of annual rings?

Study of rudimentary organs is

The branch of biology dealing with the process how to improve the human race by selective breeding is

Branch of zoology dealing with similarities and differences between individuals related by descent is

One of the sciences for which training in biology is essential, namely the science of treating diseases with drugs or curative substances, is called

In order to check purity of honey and its source, pollen grains are being studied in a sample of honey. Such a study is called as

Match the names of branches of biology in column I with the field of study in column II. A: Palynology, B: Oncology, C: Phycology, D: Sericulture.

Palynology is the study of

The branch associated with diagnosis, prevention and cure of mental disorders is

The science that deals with rearing and proper management of forest trees is called as

The study of the kind and diversity of organisms and the existing relationship among them is called

The government sponsored programme for growing trees in towns and cities for aesthetic value is called

The taxonomic status of an organism can be changed by changing

Match the following. A. Vernalization B. Double fertilization C. Pollination D. Alternation of Generations

A mathematical explanation of enzyme action on substrate was formulated by

It has not escaped our notice that the specific pairing we have postulated immediately suggests a possible copying mechanism for the genetic material. This is written by

Which of the following is the correct order of evolutionary history of man?

Connecting link between man and ape was

The fossils of Sinanthropus pekinensis have been discovered in which epoch?

Cranial capacity of modern man is

Cranial capacity of Neanderthal man is

Which of the following is more close to man?

What kind of evidence suggested that man is more closely related with chimpanzee than with other hominoid apes?

In evolution.......evolved 1st time in annelida

Ancestors of mammals belongs to

Fossils of Australopithecus were first found is

The highest cranial capacity is/was present in

The modern man differs from the apes in

Man was originated in which of the following era

Anthropometry is useful in the study of

Fossil of Cro Magnon Man was found in

Connecting link between ape and man is

Photosynthetic bacteria evolved on earth about ....... million years ago

If you go back in the history approx. 4500 million years back when atmosphere was reducing the organism were

One of the following can be used as an illustration to demonstrate process of evolution in animals

Organic evolution would have not been taken place

Which of the following is the most suitable fertilizer for paddy fields?

KFD virus is a

Due to viral infection in green tissues of plants, there is alteration in the normal development of chlorophyll. This is called

Bacteriophage transfers DNA from donor to recipient cell, this is called

The cells of bacterium Staphylococcus remain arranged in the form of

Cyanobacteria are

Assertion : We have lost all the direct evidences of origin of life. Reason : The person responsible to protect the evidences were not skilled.

Assertion : Ginkgo biloba is a living fossil. Reason : Organism which have persisted and remain unchanged for the past several million years while their relative disappeared.

Assertion : Leaf butterfly and stick insect show mimicry to dodge their enemies. Reason : Mimicry is a method to acquire body colour blinding with the surroundings.

Assertion : Natural selection is the outcome of difference in survival and reproduction among individuals that show variation in one or more traits. Reason : Adaptive forms of a given trait tend to become more common; less adaptive ones become less common or disappear.

Assertion : Coacervates are believed to be the precursors of life. Reason : Coacervates were self-duplicating aggregates of proteins surrounded by lipid molecules.

Assertion : From evolutionary point of view, human gestation period is believed to be shortening. Reason : One major evolutionary trend in humans has been the larger head undergoing relatively faster growth rate in the foetal stage.

Assertion: Cell like aggregates of complex organic compounds are called coacervates. Reason : Coacervates hand power to grow and divide.

Assertion: Botany deals with the study of plants and zoology deals with the study of animals. Reason : Biology is the study of living beings.

Assertion: Study of internal structure is called anatomy. Reason : It is useful for phylogenetic study.

Assertion: Resolving power is the ability to distinguish between two close points. Reason : Microscope reduces resolving power.

Assertion: Ribosomes came to our knowledge after the discovery of electron microscope. Reason : Electron microscope has a high magnification and resolving power.

Assertion: The science of classifying organisms is called taxonomy. Reason : Systematics and taxonomy have same meaning.

Assertion: Radioactive tracers are used to detect tumors. Reason : Tracers locate such tissues.

Assertion: Food web forms food chains. Reason : Only 10% energy passes to next trophic levels in food chain.

Animals living in colder region have shorter tail and ears as compared to the animals living in warmer regions. This phenomenon is called

Present day mammals have their predecessor in

In the developmental history of mammalian heart, it is observed that it passes through a two–chambered fish–like heart, three–chambered frog–like heart and finally four–chambered stage. To which hypothesis can this above cited statement be approximated?

Some of the important evidences of organic evolution are

Evolution is regarded as

Fossil contents of the alimentary canal are termed as

Master plate in replica plating experiment contained the

Which of the following was expert in making tools, weapons, paintings etc. or Who drew excellent pictures of animals in caves, made tools, carved ornaments from ivory stone arrows etc.

Simian shelf is a characteristic of apes, which connects the

Which one of the following statements is correct regarding evolution of mankind

The term 'Fisheries' refers to

Which of the following subdivisions deals with fossils

In which of them, induced breeding is effective

The theory of "continental drift" was originally proposed by

The hypothesis that all photosynthetic organisms require a source of hydrogen was first proposed by

The environment of an organism includes

All the energy for living organisms comes as radiation in the form of......from the sun and is captured by.......

Which of the following adaptations help in evolution

Which of the following is the most suitable fertilizer for paddy fields

KFD virus is a

Which fossil man has been known from Shivalik hills in India?

Which of these is the most recent ancestor of 'Homo sapiens'?

Dubois in 1891 found the fossil of Java ape man. It is

Evolution is best defined as

'Peking man' is known as

The recent ancestors of modern man were

Java ape man is considered to have existed in

Which of the following is true for 'Homo sapiens'?

Neanderthal man differs from modern man in

'Homo erectus' is the zoological name of

Which of the following was not in the direction of evolution of human species?

The first probable fossil of man was

Which of the primate is the closest relative of man?

Oldest tool maker is

Which of the following fossil men had religious feelings of worship and used burial customs?

Cro-Magnon man was

The prehistoric ancestor of man which existed during late pleistocene, is

Most primary homonid appeared was

The cranial capacity of Java ape man was about

The earliest fossil of human ancestors from India is

Which primitive man lived on earth at the end of pleistocene era?

Which primitive man used stones to produce fire?

Pithecanthropus erectus fossil was found in

Neanderthal man lived in

In human evolution which is most recent?

Which one of the following is direct ancestor of modern man?

During evolution of man many changes have taken place in his ancestral characters. Which one of the following is an unsignificant change?

Homo sapiens originated how many years ago?

Neanderthal man was followed by

Ancestor of man who first exhibited bipedal gait

When the entire sole rests on the ground during walking as in case of a man, it is known as

The first probable fossil of man is

Evolution of man is possible because our ape like ancestors had

Which of the following man possessed a cranial cavity equal to or even a bit large than that of a modern man

Proper burial of dead bodies, for the first time started in which prehistoric man's period

What is the scientific name of Java man

In Homo habilis, 'habilis' refers to

Which of the following is the most primitive ancestor of man

Which one of the following statements is correct

The age of the fossil of Dryopithecus on the geological time scale is

Which is not true of Archaeopteryx?

Germplasm theory against Lamarck's principle, was given by

Author of 'Philosophique Zoologique' is

The scientists regarded as Neo–Lamarckist are

When an organ is used it will develop and if it is not used, it weakens to become vestigial. Who could have said their theory?

Lamarck's acquired characters are not inherited and have no evolutionary value. This statement was given by

Persons who do hard manual work with their hands, are likely to develop

Key point to Lamarck's view about organic evolution is that every offspring

A scientist kept 72 generations of Drosophila in darkness. Even after that the first flies had normal eyes. This disapproves the theory of

Most popular example of Lamarck is

A scientist who worked on rats cut their tails upto 21 successive generations but at last he found that tail remained normal. By this experiment theory of which scientist is disapproved

Weismann's experiment discarded the views of

Select the mismatched pair: (a) Lamarck – Species are not immutable (b) Allopatric – Separate by space (c) Darwin finches – Like Galapagos (d) Hugo de vries – Evolution is discontinuous (e) Coacervates – Group of organic compound that surrounded by a membrane.

The idea of use and disuse of organs was given by

Lamarckian theory deals with

Theory of inheritance of acquired characters was putforth by

Lamarck's theory of evolution is also called

Who wrote the 'Origin of Species''

A scientist who gave a theory very similar to that given by Darwin was

Darwin's theory of pangenesis says that passage of factors through generation occurs by production in each cell of the body of

Photosynthetic bacteria evolved on earth about ....... million years ago

If you go back in the history approx. 4500 million years back when atmosphere was reducing the organism were

One of the following can be used as an illustration to demonstrate process of evolution in animals

Organic evolution would have not been taken place

The process of evolution

Sympatric speciation is also known as

There are several ways of looking at living thing, one which is at the molecular level and analytical level with regard to life could vary nearly come to

Most primitive living mammals which provide an evidence of organic evolution from geographical distribution are found in

Trilobites were evolved during which of the following period

Which one of the following evidences does not favour the Lamarckian concept of inheritance of acquired characters

"In different races, there may be difference in culture and ways of living but capacity in all is the same". It was the opinion of

Who wrote the book "Genetics and the Origin of Species"

Adaptation of a species is its

Which one of the following sequences was proposed by Darwin and Wallace for organic evolution

What is the correct chronological sequence of human evolution

Low and slopping forehead, skull with thick bones, deep lower jaw and absence of chin were present in

Fossils of which man were found in late Pleistocene deposits in France, Java and South Africa

Peking man (Homo erectus pekinensis) was

Indicate the completely correct statement about human races

Correct sequence of stages in the evolution of the modern man, (Homo sapiens), is

Which of the following is the most suitable fertilizer for paddy fields?

KFD virus is a

Due to viral infection in green tissues of plants, there is alteration in the normal development of chlorophyll. This is called

Bacteriophage transfers DNA from donor to recipient cell, this is called

The cells of bacterium Staphylococcus remain arranged in the form of

Cyanobacteria are

Assertion: We have lost all the direct evidences of origin of life. Reason: The person responsible to protect the evidences were not skilled.

Assertion: Ginkgo biloba is a living fossil. Reason: Organism which have persisted and remain unchanged for the past several million years while their relative disappeared.

Assertion: Leaf butterfly and stick insect show mimicry to dodge their enemies. Reason: Mimicry is a method to acquire body colour blinding with the surroundings.

Assertion: Natural selection is the outcome of difference in survival and reproduction among individuals that show variation in one or more traits. Reason: Adaptive forms of a given trait tend to become more common; less adaptive ones become less common or disappear.

Assertion: Coacervates are believed to be the precursors of life. Reason: Coacervates were self-duplicating aggregates of proteins surrounded by lipid molecules.

Assertion: From evolutionary point of view, human gestation period is believed to be shortening. Reason: One major evolutionary trend in humans has been the larger head undergoing relatively faster growth rate in the foetal stage.

Assertion: Cell like aggregates of complex organic compounds are called coacervates. Reason: Coacervates had power to grow and divide.

Assertion: Botany deals with the study of plants and zoology deals with the study of animals. Reason: Biology is the study of living beings.

Assertion: Study of internal structure is called anatomy. Reason: It is useful for phylogenetic study.

Assertion: Resolving power is the ability to distinguish between two close points. Reason: Microscope reduces resolving power.

Assertion: Ribosomes came to our knowledge after the discovery of electron microscope. Reason: Electron microscope has a high magnification and resolving power.

Assertion: The science of classifying organisms is called taxonomy. Reason: Systematics and taxonomy have same meaning.

Assertion: Radioactive tracers are used to detect tumors. Reason: Tracers locate such tissues.

Assertion: Food web forms food chains. Reason: Only 10% energy passes to next trophic levels in food chain.

Photosynthetic bacteria evolved on earth about ....... million years ago

If you go back in the history approx. 4500 million years back when atmosphere was reducing the organism were

One of the following can be used as an illustration to demonstrate process of evolution in animals

Organic evolution would have not been taken place

The process of evolution

Sympatric speciation is also known as

There are several ways of looking at living thing, one which is at the molecular level and analytical level with regard to life could very nearly come to

Most primitive living mammals which provide an evidence of organic evolution from geographical distribution are found in

Trilobites were evolved during which of the following period

Which one of the following evidences does not favour the Lamarckian concept of inheritance of acquired characters

"In different races, there may be difference in culture and ways of living but capacity in all is the same". It was the opinion of

Who wrote the book "Genetics and the Origin of Species"

Adaptation of a species is its

Which one of the following sequences was proposed by Darwin and Wallace for organic evolution

What is the correct chronological sequence of human evolution

Low and slopping fore head, skull with thick bones, deep lower jaw and absence of chin were present in

Fossils of which man were found in late pleistocene deposits in France, Java and South Africa

Peking man (Homo erectus pekinensis) was

Indicate the completely correct statement about human races

Correct sequence of stages in the evolution of the modern man, (Homo sapiens), is

Assertion: Cell like aggregates of complex organic compounds are called coacervates. Reason: Coacervates hand power to grow and divide.

Assertion: Botany deals with the study of plants and zoology deals with the study of animals. Reason: Biology is the study of living beings.

Assertion: Study of internal structure is called anatomy. Reason: It is useful for phylogentic study.

Assertion: Resolving power is the ability to distinguish between two close points. Reason: Micrococpe reduces resolving power.

Assertion: Ribosomes came to our knowledge after the discovery of electron microscope. Reason: Electron microscope has a high magnification and resolving power.

Assertion: The science of classifiying organisms is called taxonomy. Reason: Systematics and taxonomy have same meaning.

Assertion: Radioactive tracers are used to detect tumors. Reason: Tracers locate such tissues.

Assertion: Food web forms food chains. Reason: Only 10% energy passes to next trophic levels in food chain.

Assertion: Amino acids are interliked by peptide bonds to form amino acids. Reason: The smallest protein is ACTH.

Assertion: Adjacent monosaccharides are held by glycosidic bonds. Reason: Monosaccharides are macromolecules.

Assertion: In ainmals, carbohydrates are mostly translocated as sucrose. Reason: In plants, excess of sugar is stored as starch.

Assertion: Living systems have a high degree of tendency for undergoing entropy. Reason: Living systems are unable to overcome entropy.

Assertion: DNA serves as hereditary material. Reason: DNA functions as blue-print for building and running cellular machiner.

Assertion: Miller used four gases-methane, oxygen, hydrogen and water vapour for formation of simple organic compounds. Reason: He prepared some amino acids in his apparatus.

Assertion: Primitive atmosphere was formed by the lightest atoms. Reason : The primitive atmosphere was reducing in nature.

Assertion: It was cyanobacteria-like organism which in ancient time added oxygen to the atmosphere. Reason: Cyanobacteria was photo-autotrophic.

Asseertion: In the beginning, the developmental stages or embryos of animals are alike. Reason: Ontogeny recapitulates phylogeny.

Assertion: Evolution of man is the example of progressive evolution. Reason: Tapworm is developed due to retrogressive evolution.

Assertion: Archaeozoic era contains abundant fossils. Reason: The fossils are very few during proterozoic era.

Assertion: Petrified fossils contain hard parts of organisms. Reason: Moulds and casts lack the remains of organisms.

Which of the following is not true for viruses?

To show host specificity is a