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101.

For natural selection the important factor is `:`A. disuseB. variationC. catastropheD. special creation

Answer» Correct Answer - B
Nature selects a favourable variation.
102.

First mammal occur in which era -period ?A. Triassic - MesozoicB. Tertiary -CoenozoicC. Permian-PalaeoziocD. None of the above

Answer» Correct Answer - A
103.

Match the evolution concepts and their proposers and select the right option `:` `(GRB_OBJ_BIO_IIND_C56_E01_312_Q01)`A. A=3,B=4,C=1,D=2B. A=4,B=3,C=2,D=1C. A=4,B=2,C=3,D=1D. A=1,B=4,C=3,D=2

Answer» Correct Answer - a
104.

Which is not true of Archaeopteryx ?A. Tail is bony and longB. Jaws are modified into beakC. Forelimbs are modified into wingsD. Connecting link between birds and mammals

Answer» Correct Answer - D
105.

Fossils are of great value in support of `:`A. mutationB. use and disuseC. organic evolutionD. inheritance of acquired characters

Answer» Correct Answer - C
106.

Match following evolution concepts in List I with List II and select the correct answer using the codes given below the lists `:` `(GRB_OBJ_BIO_IIND_C56_E01_346_Q01)`A. A=1,B=2,C=3,D=4B. A=4,B=2,C=3,D=1C. A=3,B=1,C=4,D=2D. A=4,B=3,C=2,D=1

Answer» Correct Answer - D
107.

A small isolated population is more likely to undergo speciation than a large one, because a small population`:`A. is more susceptible to gene flowB. is more affected by genetic driftC. contains a greater amount of genetic diversityD. is more likely to survive in a new environment

Answer» Correct Answer - b
108.

One of the following is called Sewall Wright effect `:`A. Genetic driftB. isolationC. gene poolD. gene flow

Answer» Correct Answer - a
109.

Genetic drift operates in `:`A. large isolated populationB. small isolated poplutionC. fast reproductive populationD. slow reproductive population

Answer» Correct Answer - B
110.

Genetic drift is a `………………….` processA. randomB. directedC. coevolutionaryD. uniformitarian

Answer» Correct Answer - a
111.

Fossils are remnants of `:`A. dead organismsB. extinct organismsC. connecting linksD. present organisms

Answer» Correct Answer - b
112.

Continental drift `:`A. no longer occurs to dayB. can occur when liquid rock rises to the surface and pushes the continents apartC. has led to the geographic isolation of many populations, thus promoting speciationD. both (c ) and (d)

Answer» Correct Answer - d
113.

The fossils are preserved in `:`A. sedimentary rocksB. igneous rocksC. metamorphic rocksD. none of these

Answer» Correct Answer - A
114.

The process by which organisms with different evolutionary history evolve similar phenotypic adaptations in response to a common environmental challenge is called `:`A. Natural selectionB. Adaptive radiationC. convergent evolutionD. Non- random evolution

Answer» Correct Answer - c
115.

Fossil evidence of evolution is called `:`A. anatomyB. embryologyC. palaeontologyD. biogeography

Answer» Correct Answer - c
116.

The eye of octopus and eye of cat show different patterns of structure, yet they perform similar function. This is an example ofA. Homologous organs that have evolve due to divergent evolutionB. Analogous organs that have evolved due to convergent evolution.C. Analogous organs that have evolved due to divergent evolutionD. Homologous organs that have evolved due to convergent evolution.

Answer» Correct Answer - B
117.

The type of fossil where hard parts like bones, teeth or trunk of trees are preserved `:`A. mouldB. petrifactionC. compressionD. pseudofossil

Answer» Correct Answer - b
118.

Similarity in organisms with different genotypes indicates `:`A. microevolutionB. divergent evolutionC. macroevolutionD. convergent evolution

Answer» Correct Answer - d
119.

Match the Era listed under column I with the events given under column II, choose the answer which gives the correct combination of the alphabets of the two columns `:` `(GRB_OBJ_BIO_IIND_C56_E01_242_Q01)`A. A=s,B=q,C=r,D=pB. A=r,B=s,C=p,D=qC. A=s,B=r,C=q,D=pD. A=r,B=q,C=s,D=p

Answer» Correct Answer - c
120.

Which one of the these was a flying dinosaur ?A. TriceratopsB. StegosaurusC. PteranodonD. Tyrannosaurus

Answer» Correct Answer - d
121.

A flying reptile was `:`A. PterosaurB. PlesiosaurC. BronotosaurusD. Ichthyosaur

Answer» Correct Answer - a
Pterosaurs were flying reptiles with large patagia, supported by an elongated finger for flight.
122.

BirBal Sahni worked on `:`A. algaeB. bryophytesC. fossil plantsD. angiosperms

Answer» Correct Answer - C
Prof. Birbal Sahni (1891-1949) worked on class Pentoxylae, gymnosperms of Jurassic period from Nipania Chert in Raj Mahal hills of Bihar.
123.

Which of the following matches an event in the history of life with the correct geological era ?A. `{:("First mammal",,-,,"Precambrian"):}`B. `{:("Appearance of humans",,-,,"Mesozoic"):}`C. `{:("Dominance of dinosaurs",,-,,"Cenozoic"):}`D. `{:("Movement of plants and animals onto land",,-,,"Palaeozoic"):}`

Answer» Correct Answer - d
124.

Improved race of pigeons have been developed by `:`A. natural selectionB. artificial selectionC. protective selectionD. environment selection

Answer» Correct Answer - B
125.

As evident from fossil records which era has no life `?`A. AzoicB. PalaeozoicC. CoenozoicD. Proterozoic

Answer» Correct Answer - a
126.

Archaeozoic era is considered as the age of `:`A. fishesB. protistsC. marine lifeD. amphibians

Answer» Correct Answer - b
127.

Both prokaryotic and eukaryotic fossils are found in `:`A. azoicB. coenozoicC. proterozoicD. archaeozoic

Answer» Correct Answer - D
128.

First developed vertebrates on the Earth were `:`A. placodermsB. ostracodermsC. cyclostomatesD. chondrichthyes

Answer» Correct Answer - b
129.

The study of plant fossil is called `:`A. palynologyB. paedologyC. palaeobotanyD. palaeoinsectology

Answer» Correct Answer - c
130.

Birbal Sahni was a `:`A. zoologistB. ornithologistC. palaeobotanistD. founder of Central Drug Research Institute (CDRI)

Answer» Correct Answer - C
131.

Eurypterids were extinct `:`A. birdsB. reptilesC. mammalsD. arthropods

Answer» Correct Answer - d
132.

Trilobites became extinct in `:`A. permianB. jurassicC. carboniferousD. devonian

Answer» Correct Answer - a
133.

The theory of recapitulation means that `:`A. all animals start as an eggB. body parts once lost are regeneratedC. progency of an organism resembles its parentsD. life history of an animal reflects its evolutionary history

Answer» Correct Answer - d
134.

Which of the is mismatched ?A. `{:("Coenozoic",,-,,"grasses and humans"):}`B. `{:("Mesozoic",,-,,"Cycads and dinosaurs"):}`C. `{:("Palaeozoic",,-,,"prokaryotes and unicellular eukaryotes""):}`D. `{:("Cambrian",,-,,"marine organisms with external skeletons"):}`

Answer» Correct Answer - c
Prokaryotes and unicellular eukaryotes were evolved during Archaeozoic and Proterozoic eras(Precambrian time ).
135.

Trilobits evolved during `:`A. silurianB. cambrianC. orduvicianD. precambrian

Answer» Correct Answer - b
136.

The Jurassic period belongs to the era `:`A. cenozoicB. mesozoicC. palaeozoicD. archaeozoic

Answer» Correct Answer - b
137.

The late Mesozoic era (Cretaceous period ) was characterized by `:`A. rise of dinosaurs, arise of toothed birds and rise to flowing plantsB. extreme specialization of reptiles, extinction of great reptiles and extinction of toothed birdsC. rise of archaic mammals, rise of dinosaurs and appearance of toothed birdsD. extinction of archaic mammals, rise of birds and appearance of first dinosaurs

Answer» Correct Answer - b
138.

A good example of recapitulation theory is `:`A. canine teeth of dogB. tadpole larva of frogC. placenta of mammalsD. embryonic membrane of reptiles

Answer» Correct Answer - b
139.

Which era is dubbed as the age of prokaryotic microbes ?A. ArcheanB. ProterozoicC. PhanerozoicD. Precambrian

Answer» Correct Answer - b
140.

Presence of gills in the tadpole of frog indicates that `:`A. frogs evolved from gilled ancestorsB. fishes were amphibious in the pastC. fishes evolved from frog-like ancestorsD. frogs will have gills in future

Answer» Correct Answer - a
141.

Which of the following provides evidence for evolution ?A. Direct observation of genetic changes in populationsB. Shared characteristics of organismsC. The fossil recordD. All of the above

Answer» Correct Answer - d
142.

Lamarck was a `:`A. French naturalistB. German biologistC. British evolutionistD. Americal biochemist

Answer» Correct Answer - a
143.

Which one of the following scientists is not related with organic evolution ?A. D. D. DarlingtonB. T. R. MalthusC. Erasmus DarwinD. Charles Darwin

Answer» Correct Answer - a
C.D. Darlington was a cytologist.
144.

Match the scientists and their contributions in the field of evolution A. A=4,B=3,C=5,D=1,E=6B. A=4,B=4,C=5,D=3,E=1C. A=4,B=3,C=1,D=5,E=2D. A=2,B=3,C=1,D=5,E=2

Answer» Correct Answer - C
145.

The scientist, who described the birds as glorifies reptiles was `:`A. RomerB. HuxleyC. MedelD. Robert Hooke

Answer» Correct Answer - B
146.

Diversity of living organisms is due to `:`A. mutationB. gradual changesC. long term evolutionary changeD. short term evolutionary change

Answer» Correct Answer - c
147.

Who said "Nothing in bioilogy makes sense except in the light of evolution " ?A. Hugo de VriesB. Charles DarwinC. Theodosius DobzhanskyD. Jean Baptiste de Lamarck

Answer» Correct Answer - c
148.

The theory of panagenesis was rejected due to the acceptance of `:`A. Richter theory of cosmozoicB. Cuvier theory of catastrophismC. Weismann theory of germplasmD. Spallanzani theory of biogensis

Answer» Correct Answer - C
149.

Which of the following is not a concept of Lamarck ?A. Environment pessure causes variationB. Rate and survival of organism is different due to variationC. Inheritance of acquired characterD. If an organ is used constantly it will continuously increase its size

Answer» Correct Answer - b
150.

The coal beds of the present time were formed during `:`A. devonianB. triassicC. carboniferousD. permian

Answer» Correct Answer - c