Punjab 12th Class Biology Chapter 24 Evolution Mcqs Test Online

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Question 1 of 15

Biology

1. Which of the following is an example of vestigial structure in humans?

1.Nipple on male mammals

2.Human knee cap

3.Human tailbone

4.Sixth finger found is some humans

Question 1 of 15

Question 2 of 15

2. Which of the following is a true statement about Charles Darwin?

1.He based his theory on the inheritance of acquired characteristics.

2.He proposed natural selection as the mechanism of evolution

3.He worked out the principle of population genetics.

4.He was the first to discover that living things can change, or evolve

Question 2 of 15

Question 3 of 15

3. Which of the following ideas is common to both Darwin’s and Lamarck’s theories of Evolution?

1.The fossil record supports the view that species are fixed

2.Evolutionary adaptation results from interactions between organisms and their

3.Evolution drives organisms to greater and greater complexity.

4.Adaptation results from different reproductive success

Question 3 of 15

Question 4 of 15

4. The earliest geological time period among the following is __________.

1.Quaternary

2.Cambrian

3.Permian

4.Jurassic

Question 4 of 15

Question 5 of 15

5. The smallest biological unit that can evolve over time is:

1.An individual organism

2.A population

3.An ecosystem

4.A specie

Question 5 of 15

Question 6 of 15

6. Which of the following pairs of structures is least likely to represent homology?

1.The wings of a bat and the forelimbs of a human

2.The haemoglobin of a baboon and that of a gorilla

3.The wings of a bird and those of an insect

4.The brain of a cat and that of a dog

Question 6 of 15

Question 7 of 15

7. The force that initiates evolution is _________

1.Mutation

2.Extinction

3.Variation

4.Adaptation

Question 7 of 15

Question 8 of 15

8. The experiment that simulated conditions thought to be present on the early earth

1.Geiger – Marsden experiment

2.Schiehallion experiment

3.Miller – Urey experiment

4.Hershey – Chase experiment

Question 8 of 15

Question 9 of 15

9. All organisms share the same genetic code. This commonality is evidence that:

1.Convergent evolution has occurred

2.All organisms are descended from a common ancestor

3.Evolution occurs gradually from

4.Evolution is occurring now

Question 9 of 15

Question 10 of 15

10. The process of ---------- and ----------- generate variation, and ------------ produces adaptation to the environment.

1.Mutation ------- natural selection ------ genetic drift

2.Genetic drift ------ mutation ------ sexual recombination

3.Sexual recombination ------natural selection -----mutation

4.Mutation -------- sexual recombination ------ natural selection

Question 10 of 15

Question 11 of 15

11. Natural selection is sometimes describe as survival of the fittest. Which of the following most accurately measures an organisms fitness?

1.Its ability to withstand environmental extremes

2.How much food it is able to make or obtain

3.Its mutation rate.

4.How many fertile offspring it produces

Question 11 of 15

Question 12 of 15

12. Using the Hardy-Weinberg Principle, which expression represents the frequency of the homozygous recessive genotype?

1.P²

2.2Pq

3.q²

4.d. q

Question 12 of 15

Question 13 of 15

13. _________ is a vestigial organ

1.None of these

2.Intestinal villi

3.Vermiform appendix

4.Papillae

Question 13 of 15

Question 14 of 15

14. Which condition can be explained by Lamarckism?

1.How giraffes got their long neck

2.How humans became bipedal

3.All of these

4.How humans lost their tail

Question 14 of 15

Question 15 of 15

15. In science the term theory generally applies to an idea that:

1.Attempts to explain many related phenomena.

2.Is considered a law of nature

3.Is a speculation lacking supportive experiments.

4.Is synonymous with what biologist means by hypothesis

Question 15 of 15

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