Punjab 12th Class Biology Chapter 24 Evolution Mcqs Test Online

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Question 1 of 15

Biology

1. The force that initiates evolution is _________

1.Mutation

2.Extinction

3.Adaptation

4.Variation

Question 1 of 15

Question 2 of 15

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

1.Attempts to explain many related phenomena.

2.Is a speculation lacking supportive experiments.

3.Is considered a law of nature

4.Is synonymous with what biologist means by hypothesis

Question 2 of 15

Question 3 of 15

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

1.He worked out the principle of population genetics.

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

3.He proposed natural selection as the mechanism of evolution

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

Question 3 of 15

Question 4 of 15

4. _________ is a vestigial organ

1.Vermiform appendix

2.None of these

3.Papillae

4.Intestinal villi

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.Nipple on male mammals

3.Human knee cap

4.Sixth finger found is some humans

Question 5 of 15

Question 6 of 15

6. 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 6 of 15

Question 7 of 15

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

1.Cambrian

2.Quaternary

3.Jurassic

4.Permian

Question 7 of 15

Question 8 of 15

8. 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 8 of 15

Question 9 of 15

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

1.Mutation -------- sexual recombination ------ natural selection

2.Mutation ------- natural selection ------ genetic drift

3.Genetic drift ------ mutation ------ sexual recombination

4.Sexual recombination ------natural selection -----mutation

Question 9 of 15

Question 10 of 15

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

1.Geiger – Marsden experiment

2.Miller – Urey experiment

3.Schiehallion experiment

4.Hershey – Chase experiment

Question 10 of 15

Question 11 of 15

11. Which condition can be explained by Lamarckism?

1.All of these

2.How giraffes got their long neck

3.How humans became bipedal

4.How humans lost their tail

Question 11 of 15

Question 12 of 15

12. 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 wings of a bird and those of an insect

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

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

Question 12 of 15

Question 13 of 15

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

1.A population

2.An individual organism

3.An ecosystem

4.A specie

Question 13 of 15

Question 14 of 15

14. 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 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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