MCQ Questions Chapter 7 Evolution Class 12 Biology

MCQ Class 12

Please refer to MCQ Questions Chapter 7 Evolution Class 12 Biology with answers provided below. These multiple-choice questions have been developed based on the latest NCERT book for class 12 Biology issued for the current academic year. We have provided MCQ Questions for Class 12 Biology for all chapters on our website. Students should learn the objective based questions for Chapter 7 Evolution in Class 12 Biology provided below to get more marks in exams.

Chapter 7 Evolution MCQ Questions

Please refer to the following Chapter 7 Evolution MCQ Questions Class 12 Biology with solutions for all important topics in the chapter.

MCQ Questions Answers for Chapter 7 Evolution Class 12 Biology

Question- Which was first photosynthetic organism?
(a) Red algae
(b) Green algae
(c) Cyanobacteria
(d) Protobiota

Answer

C

Question- Presence of gills in the tadpole of frog indicates that:
(a) frogs evolved from gilled ancestors
(b) fishes were amphibious in the past
(c) fishes evolved from frog-like ancestors
(d) frogs will have gills in future

Answer

A

Question- During the time of “Origin of Life” the water of primitive ocean las been called “Lot dilute soup” of organic substances by-
(a) Miller
(b) Oparin
(c) Heldane
(d) Sidney fox

Answer

D

Question-The theory which explains the origin of life and is based upon experiments is:
(a) biogenesis
(b) catastrophism
(c) abiogenesis
(d) chemical theory

Answer

D

Question-There is no life in Moon due to the absence of:
(a) water
(b) light
(c) temperature
(d) oxygen

Answer

A

Question- Chemical theory of origin of life was given by:
(a) Spallanzani
(b) Louis Pasteur
(c) Stanley Miller
(d) Oparin and Haldan

Answer

A

Question- Which compound had a very important role in prebiotic evolution?
(a) CH4
(b) NO
(c) S02
(d) SO3

Answer

B

Question- Who performed an experiment to prove that organic compounds were the basis of life?
(a) Calvin
(b) Miller
(c) Oparin
(d) Melvin

Answer

C

Question- The classical example of adaptive radiation in development of new species is:
(a) Darwin’s finches
(b) Marsupials of Austra
(c) Both of these
(d) None of these

Answer

C

Question- Coacervates belongs to the category of.
(a) protozoans
(b) cyanobacteria
(c) molecular aggregates
(d) molecular aggregates surrounded by lipid membrane

Answer

B

Question-The most primitive cell-like chemical aggregates capable of growth and division were –
(a) eobionts
(b) prokaryotes
(c) microspheres
(d) chemoautotrophs

Answer

C

Question-Two zoogeographical regions separated by high mountain ranges are:
(a) Oriental and Austr an
(b) Palaearctic and Oriental 
(c) Nearctic and Palaearctic
(d) Neotropical and Ethiopian

Answer

B

Question-Stanley Miller conducted experiments in 1953 on prebiotic Earth environment using special apparatus. The primary surprising products were:
(a) peptides
(b) nucleotides
(c) amino acids
(d) simple sugars

Answer

C

Question- About how long ago was the Earth
(a) 3.0 billion years ago
(b) 10 billion yews ago
(c) 4.6 billion years ago
(d) 20 billion yews ago

Answer

A

Question- Abiogenesis means:
(a) spontaneous generation
(b) origin of viruses and microbes
(c) origin of life from living organisms
(d) origin of life from nonliving organism

Answer

A

Question- Which of the following experiments suggests that simplest living organisms could not have originated spontaneously from nonliving matter?
(a) Microbes did not appear in stored meat
(b) Larvae could appear in decaying organic matter
(c) Microbes appeared from unsterilized organic matter

Answer

C

Question- Peripatus in a connecting link between-
(a) annelids and helminthes
(b) annelids and molluscs
(c) annelids and arthopods
(d) reptiles and mammals

Answer

C

Question- Oparin’s theory of’Origin of life’is based on:
(a) chemical evolution
(b) cosmic evolution
(c) artificial synthesis
(d) organic evolution

Answer

A

Question- Bacteria that live around deep-sea lot water meets obtain energy by oxidising inorganic hydrogen sulphide belched out by the verts. They use this energy to build organic molecules from carbon obtained from the carbon dioxide in the sea water. These bacteria night be deceived as-
(a) Photohetero trophs
(b) Chenoauto trophs
(c) Photoautotrophs
(d) Chenohetero trophs

Answer

B

Question- The presence of salts (NaCI and others) in the animal body fluids gives an inference that life originated in the:
(a) rain water
(b) salt solutions
(c) primitive ocean
(d) none of these

Answer

C

Question- Which is incorrect?
(a) Wings of insects and bats are analogous
(b) Wings of bats and birds are homologous
(c) Wings of insects and birds are analogous
(d) Wings of insects and birds are homologous

Answer

C

Question- Stanley Miller proposed origin of life by:
(a) biogenesis
(b) abiogenesis
(c) chemical synthesis
(d) none of these

Answer

C

Question- ‘Modern theory of origin of life’ was propounded by:
(a) Oparin
(b) Miller
(c) Darwin
(d) Khorana

Answer

A

Question- Select the wrong pair:
(a) Oparin — Protobiont
(b) Spallanzani — Abiogenesis
(c) Fox — Coacervates
(d) Haldane — Hot dilute soup

Answer

B

Question- The basis of life is:
(a) lipid
(b) protein
(c) nucleic acid
(d) nucleoprotein

Answer

C

Question- Which one is present today but was absent about 3 to 5 million years ago?
(a) N2
(b) 02
(c) H2
(d) CH2

Answer

B

Question- Origin of life as a result of chemical evolution was properly explained by:
(a) Fax
(b) Oparin
(c) Watson
(d) Haeckel

Answer

B

Question- Life cannot originate from inorganic material at present because of:
(a) absence of raw material
(b) very low atmospheric temperature
(c) high degree of environmental pollution
(d) very high amount of oxygen in atmosphere

Answer

D

Question- Which of the following evolved first?
(a) Coacervates
(b) Viroids
(c) Cyanobacteria
(d) Mycoplasma

Answer

A

Question-The basic components of atmosphere of primitive Earth were:
(a) ammonia, methane and water
(b) methane, ozone, nitrogen and water
(c) hydrogen, nitrogen, methane and water
(d) ammonia, methane, hydrogen and water

Answer

D

Question- The oldest eukaryotic fossil is:
(a) 1.5 billion years old
(b) 3.5 billion years old
(c) 2.5 billion years old
(d) 600 million years old

Answer

A

Question- Which one of the following amino acids was not found to be synthesized in Miller’s experiment?
(a) Alanine
(b) Glycine
(c) Aspartic acid
(d) Glutamicacid

Answer

D

Question- On the primitive Earth, polymers such as proteins and nucleic acids in aqueous suspension formed the spherical aggregates. These are called:
(a) liposomes
(b) primitogens
(c) coacervates 
(d) primitosomes

Answer

C

Question- The primitive Earth conditions were experimentally shown by.
(a) Miller
(b) Urey
(c) Oparin
(d) Both (a) and (b)

Answer

D

Question- Egg laying mammals and marsupials are found in Austr a and nowhere else. This indicates:
(a) natural barrier
(b) climatic barrier
(c) continuous distribution
(d) discontinuous distribution

Answer

D

Question- Coacervates were experimentally produced by:
(a) Urey and Miller
(b) Jacob and Monod 
(c) Fischer and Huxley
(d) Sidney Fox and Oparin

Answer

D

Question- Which of the following are homologous organs?
(a) Wings insects and bats
(b) Fins of fishes and flippers of whale
(c) Fins of fishes and forearms of human
(d) Forearm of human, bat’s wings and whale’s flippers, fore limbs of horse

Answer

D

Question- Which one of the following pairs has homologous organs?
(a) Air bladder offish and lungs of frog
(b) Wings of a bat and wings of cockroach
(c) Wings of a bird and wings of a butterfly
(d) Pectoral fins of a fish and forelimbs of a horse

Answer

C

Question- Life originated in the era:
(a) proterozoic
(b) Mesozoic
(c) precambrian
(d) coenozoic

Answer

C

Question- Evolutionary convergence is the development of:
(a) common set of characters in groups of different ancestry
(b) common set of characters in closely related groups
(c) dissimilar characters in closely related groups
(d) random mating

Answer

A

Question- Organisms which obtain energy by the oxidation of reduced inorganic compounds are called:
(a) saprozoic
(b) chemoautotrophs
(c) photoautotrophs
(d) coproheterotrophs

Answer

C

Question- Peripatus is a;connecting link between:
(a) annelids and molluscs
(b) reptiles and mammals
(c) annelids and arthropods
(d) annelids and helminthes

Answer

C

Question- Which one of the following is incorrect about the characteristic of protobionts (coacervates and microspheres) as envisaged in abiogenic origin of life?
(a) They were able to reproduce
(b) They could maintain an internal environment
(c) They were partially isolated from the surroundings
(d) They could separate combinations of molecules from the surroundings

Answer

A

Question- Eyes of an Octopus and mammals appear quite similar, but these are different in their basic structure and origin, heave they are:
(a) ancestral organs
(b) analogous organs
(c) homologous organs
(d) both homologous and analogous organs

Answer

D

Question- Which pair of organs are analogous in nature?
(a) Gill of fish and gill of prawn
(b) Ear of frog and ear of rabbit
(c) Arm of man and limb of horse
(d) Wing of bat and flipper of seal

Answer

A

Question- The organs which look different but have the same basic structure and origin are known as:
(a) homologous
(b) vestigial
(c) heterologous
(d) analogous

Answer

A

Question- Evolutionary history of a group of organisms is called:
(a) ontogeny
(b) taxonomy
(c) systematics
(d) phylogeny

Answer

D

Question- Three forms of the peppered moth, Bistan betularia, namely the melanic form, the pale form, and a form intermediate between these two, are found in Britain today.
The melanic form was first observed in 1848 and its frequency subsequently inqreased. This is thought to be the result of
(a) adaptive radiation.
(b) convergent evolution.
(c) divergent evolution.
(d) natural selection.

Answer

D

Question- The greatest evolutionary change enabling the land vertebrates to be completely free from water was the development of-
(a) lungs
(b) four legs
(c) four chambered heart
(d) cleidoic eggs and internal fertilization

Answer

D

Question- Analogous structures are:
(a) similar in origin and function
(b) different in origin and function
(c) different in origin but similar in function
(d) similar in origin but different in function

Answer

C

Question- Which of the following experiments suggests that simplest living organisms could not lave originated spontaneously from non-living matter-
(a) Microbes did not appear in stored meat
(b) Larvae could appear is decaying organic matter
(c) Microbes appeared from unsterilised organic matter
(d) Meat was not spoilt, when heated and kept sealed in a ressel

Answer

D

Question- Jurassic period of the Mesozoic era in characterized by-
(a) Gymnosperms were dominant plants and first binds appeared
(b) Radiation of reptiles and origin of mammals like reptiles
(c) Binosaurs became extinct and orgiosperms appeared
(d) Flowering plants and first dinosaus appeared

Answer

A

MCQ Questions Chapter 7 Evolution Class 12 Biology

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