Punjab 12th Class Biology Chapter 24 Evolution Mcqs Test Online

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Question 1 of 15

Biology

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

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

2.Mutation -------- sexual recombination ------ natural selection

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

4.Genetic drift ------ mutation ------ sexual recombination

Question 1 of 15

Question 2 of 15

2. Which condition can be explained by Lamarckism?

1.All of these

2.How humans lost their tail

3.How humans became bipedal

4.How giraffes got their long neck

Question 2 of 15

Question 3 of 15

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

1.q²

2.P²

3.d. q

4.2Pq

Question 3 of 15

Question 4 of 15

4. 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.Its mutation rate.

3.How many fertile offspring it produces

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

Question 4 of 15

Question 5 of 15

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

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

2.He proposed natural selection as the mechanism of evolution

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

4.He worked out the principle of population genetics.

Question 5 of 15

Question 6 of 15

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

1.A specie

2.A population

3.An individual organism

4.An ecosystem

Question 6 of 15

Question 7 of 15

7. The force that initiates evolution is _________

1.Adaptation

2.Mutation

3.Variation

4.Extinction

Question 7 of 15

Question 8 of 15

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

1.Attempts to explain many related phenomena.

2.Is synonymous with what biologist means by hypothesis

3.Is considered a law of nature

4.Is a speculation lacking supportive experiments.

Question 8 of 15

Question 9 of 15

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

1.Human knee cap

2.Human tailbone

3.Nipple on male mammals

4.Sixth finger found is some humans

Question 9 of 15

Question 10 of 15

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

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

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

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

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

Question 10 of 15

Question 11 of 15

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

1.Miller – Urey experiment

2.Hershey – Chase experiment

3.Schiehallion experiment

4.Geiger – Marsden experiment

Question 11 of 15

Question 12 of 15

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

1.Adaptation results from different reproductive success

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

3.Evolution drives organisms to greater and greater complexity.

4.Evolutionary adaptation results from interactions between organisms and their

Question 12 of 15

Question 13 of 15

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

1.Cambrian

2.Permian

3.Jurassic

4.Quaternary

Question 13 of 15

Question 14 of 15

14. _________ is a vestigial organ

1.Intestinal villi

2.Vermiform appendix

3.Papillae

4.None of these

Question 14 of 15

Question 15 of 15

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

1.All organisms are descended from a common ancestor

2.Convergent evolution has occurred

3.Evolution occurs gradually from

4.Evolution is occurring now

Question 15 of 15

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