Punjab 12th Class Biology Chapter 24 Evolution Mcqs Test Online

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Question 1 of 15

Biology

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

1.Is considered a law of nature

2.Attempts to explain many related phenomena.

3.Is synonymous with what biologist means by hypothesis

4.Is a speculation lacking supportive experiments.

Question 1 of 15

Question 2 of 15

2. 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 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.Miller – Urey experiment

3.Hershey – Chase experiment

4.Geiger – Marsden experiment

Question 3 of 15

Question 4 of 15

4. The force that initiates evolution is _________

1.Variation

2.Extinction

3.Mutation

4.Adaptation

Question 4 of 15

Question 5 of 15

5. _________ is a vestigial organ

1.Papillae

2.Vermiform appendix

3.Intestinal villi

4.None of these

Question 5 of 15

Question 6 of 15

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

1.Evolution occurs gradually from

2.Evolution is occurring now

3.Convergent evolution has occurred

4.All organisms are descended from a common ancestor

Question 6 of 15

Question 7 of 15

7. 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 wings of a bat and the forelimbs of a human

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

Question 7 of 15

Question 8 of 15

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

1.An ecosystem

2.A specie

3.A population

4.An individual organism

Question 8 of 15

Question 9 of 15

9. 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 9 of 15

Question 10 of 15

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

1.He proposed natural selection as the mechanism of evolution

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

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

4.He worked out the principle of population genetics.

Question 10 of 15

Question 11 of 15

11. 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.Adaptation results from different reproductive success

4.Evolution drives organisms to greater and greater complexity.

Question 11 of 15

Question 12 of 15

12. 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 12 of 15

Question 13 of 15

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

1.Human knee cap

2.Human tailbone

3.Sixth finger found is some humans

4.Nipple on male mammals

Question 13 of 15

Question 14 of 15

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

1.Quaternary

2.Permian

3.Jurassic

4.Cambrian

Question 14 of 15

Question 15 of 15

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

1.d. q

2.P²

3.q²

4.2Pq

Question 15 of 15

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