Punjab 12th Class Biology Chapter 24 Evolution Mcqs Test Online

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Question 1 of 15

Biology

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

1.2Pq

2.P²

3.q²

4.d. q

Question 1 of 15

Question 2 of 15

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

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

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

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

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

Question 2 of 15

Question 3 of 15

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

1.Schiehallion experiment

2.Geiger – Marsden experiment

3.Miller – Urey experiment

4.Hershey – Chase experiment

Question 3 of 15

Question 4 of 15

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

1.Sexual recombination ------natural selection -----mutation

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

3.Mutation ------- natural selection ------ genetic drift

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

Question 4 of 15

Question 5 of 15

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

1.Human tailbone

2.Human knee cap

3.Sixth finger found is some humans

4.Nipple on male mammals

Question 5 of 15

Question 6 of 15

6. _________ is a vestigial organ

1.Intestinal villi

2.Vermiform appendix

3.None of these

4.Papillae

Question 6 of 15

Question 7 of 15

7. 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 is occurring now

4.Evolution occurs gradually from

Question 7 of 15

Question 8 of 15

8. The force that initiates evolution is _________

1.Variation

2.Extinction

3.Adaptation

4.Mutation

Question 8 of 15

Question 9 of 15

9. 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.Evolutionary adaptation results from interactions between organisms and their

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

4.Evolution drives organisms to greater and greater complexity.

Question 9 of 15

Question 10 of 15

10. 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 10 of 15

Question 11 of 15

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

1.A specie

2.An individual organism

3.An ecosystem

4.A population

Question 11 of 15

Question 12 of 15

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

1.He worked out the principle of population genetics.

2.He proposed natural selection as the mechanism of evolution

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

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

Question 12 of 15

Question 13 of 15

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

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

2.Its mutation rate.

3.Its ability to withstand environmental extremes

4.How many fertile offspring it produces

Question 13 of 15

Question 14 of 15

14. Which condition can be explained by Lamarckism?

1.All of these

2.How humans became bipedal

3.How giraffes got their long neck

4.How humans lost their tail

Question 14 of 15

Question 15 of 15

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

1.Cambrian

2.Jurassic

3.Quaternary

4.Permian

Question 15 of 15

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