Punjab 12th Class Biology Chapter 24 Evolution Mcqs Test Online

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Question 1 of 15

Biology

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

1.Hershey – Chase experiment

2.Miller – Urey experiment

3.Geiger – Marsden experiment

4.Schiehallion experiment

Question 1 of 15

Question 2 of 15

2. 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 worked out the principle of population genetics.

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

4.He proposed natural selection as the mechanism of evolution

Question 2 of 15

Question 3 of 15

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

1.Sixth finger found is some humans

2.Human knee cap

3.Human tailbone

4.Nipple on male mammals

Question 3 of 15

Question 4 of 15

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

1.q²

2.d. q

3.P²

4.2Pq

Question 4 of 15

Question 5 of 15

5. _________ is a vestigial organ

1.Vermiform appendix

2.None of these

3.Papillae

4.Intestinal villi

Question 5 of 15

Question 6 of 15

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

1.Permian

2.Jurassic

3.Quaternary

4.Cambrian

Question 6 of 15

Question 7 of 15

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

1.Is synonymous with what biologist means by hypothesis

2.Is a speculation lacking supportive experiments.

3.Is considered a law of nature

4.Attempts to explain many related phenomena.

Question 7 of 15

Question 8 of 15

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

1.Its mutation rate.

2.How many fertile offspring it produces

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

4.Its ability to withstand environmental extremes

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.Evolution drives organisms to greater and greater complexity.

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

3.Evolutionary adaptation results from interactions between organisms and their

4.Adaptation results from different reproductive success

Question 9 of 15

Question 10 of 15

10. Which condition can be explained by Lamarckism?

1.How humans became bipedal

2.How humans lost their tail

3.All of these

4.How giraffes got their long neck

Question 10 of 15

Question 11 of 15

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

1.An ecosystem

2.A specie

3.A population

4.An individual organism

Question 11 of 15

Question 12 of 15

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

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

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

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

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

Question 12 of 15

Question 13 of 15

13. The force that initiates evolution is _________

1.Adaptation

2.Extinction

3.Variation

4.Mutation

Question 13 of 15

Question 14 of 15

14. 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 14 of 15

Question 15 of 15

15. 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 -------- sexual recombination ------ natural selection

4.Mutation ------- natural selection ------ genetic drift

Question 15 of 15

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