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CHAPTER 29: Evolution

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Question 1 of 15

1. Question
A population will not exist in HardyWeinberg equilibrium if
- There is no migration
- The population is large
- Individuals mate selectively
- There are no mutations.
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Question 2 of 15

2. Question
Which one of the following describes correctly the homologous structures ?
- Organs with anatomical similarities, but performing different functions
- Organs with anatomical dissimilarities, but performing same function
- Organs that have no function now, but had an important function in ancestor
- Organs appearing only in embryonic stage and disappearing later in the adult
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Question 3 of 15

3. Question
Which of the following is the correct sequence of events in the origin of life?

I.Formation of protobionts

II.Synthesis of organic monomers

III.Synthesis of organic polymers

IV.Formation of DNAbased genetic systems
- I, II, III, IV
- I, III, II, IV
- II, III, I, IV
- II, III, IV, I
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Question 4 of 15

4. Question
What was the most significant trend in the evolution of modern man (Homo sapiens) from his ancestors?
- Shortening of jaws
- Binocular vision
- Upright posture
- Increasing cranial capacity
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Question 5 of 15

5. Question
At a particular locus, frequency of A allele is 0.6 and that of a is 0.4. What would be the frequency of heterozygotes in a random mating population at equilibrium?
- 0.36
- 0.16
- 0.24
- 0.48
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Question 6 of 15

6. Question
Wings of pigeon, mosquito, and bat show
- Divergent evolution
- Atavism
- Convergent evolution
- All of these
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Question 7 of 15

7. Question
- 4
- 1
- 2
- 3
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Question 8 of 15

8. Question
Genetic drift operates in
- Small isolated population
- Large isolated population
- Nonreproductive population
- Slow reproductive population
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Question 9 of 15

9. Question
In HardyWeinberg equation, the frequency of heterozygous individual is represented by
- p 2
- 2pq
- pq
- q 2
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Question 10 of 15

10. Question
Following are the two statements regarding the origin of life.

(A)The earliest organisms that appeared on the earth were nongreen and presumably anaerobes.

(B)The first autotrophic organisms were the chemoautotrophs that never released oxygen. Of the above statements which one of the following options is correct?
- Both (A) and (B) are correct.
- Both (A) and (B) are false.
- (B) is correct but (A) is false.
- (A) is correct but (B) is false.
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Question 11 of 15

11. Question
- 4
- 3
- 1
- 2
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Question 12 of 15

12. Question
Match the column-I with column-II.

Column-I                                                                   Column-II

A.Human embryos                            I.Chemical evolution have gill

B.Oparin and Haldane                     IIStimulation experiment

C.Miller and Urey                             III.Wings of bird and butterfly

D.Analogous organs                          IV.outogeny repeats Phylogeny
- A – III, B – IV, C – II, D – I
- A – II, B – I, C – IV, D – III
- A – IV, B – I, C – II, D – III
- A – IV, B – I, C – III, D – II
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Question 13 of 15

13. Question
The chronological order of human evolution from early to the recent is
- Australopithecus -> Ramapithecus ->Homo habilis->Homo erectus
- Ramapithecus -> Australopithecus ->Homo habilis->Homo erectus
- Ramapithecus -> Homo habilis ->Australopithecus->Homo erectus
- Australopithecus -> Homo habilis -> Ramapithecus->Homo erectus
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Question 14 of 15

14. Question
Which of the following statements is incorrect?
- The living and non-living are made up of the same elements
- Life originated in air
- Energy transfers and transformations do not occur continuously in a living cell
- ATP is considered as the energy currcncy of a cell
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Question 15 of 15

15. Question
Which is true about gene mutation?
- A mutation that is detrimental in one environment may prove to be beneficial in another environment
- Mutation arises when needed
- Process of mutation is not affected by low intensity X-rays
- Mutation is always disadvantageous
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