Punjab 12th Class Biology Chapter 24 Evolution Mcqs Test Online

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Question 1 of 15

Biology

1. 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.Adaptation results from different reproductive success

3.Evolutionary adaptation results from interactions between organisms and their

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

Question 1 of 15

Question 2 of 15

2. The force that initiates evolution is _________

1.Mutation

2.Variation

3.Extinction

4.Adaptation

Question 2 of 15

Question 3 of 15

3. _________ is a vestigial organ

1.Vermiform appendix

2.None of these

3.Papillae

4.Intestinal villi

Question 3 of 15

Question 4 of 15

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

1.Nipple on male mammals

2.Sixth finger found is some humans

3.Human tailbone

4.Human knee cap

Question 4 of 15

Question 5 of 15

5. 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 5 of 15

Question 6 of 15

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

1.A population

2.A specie

3.An ecosystem

4.An individual organism

Question 6 of 15

Question 7 of 15

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

1.How many fertile offspring it produces

2.Its ability to withstand environmental extremes

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

4.Its mutation rate.

Question 7 of 15

Question 8 of 15

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

1.Jurassic

2.Permian

3.Cambrian

4.Quaternary

Question 8 of 15

Question 9 of 15

9. 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 9 of 15

Question 10 of 15

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

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

2.He worked out the principle of population genetics.

3.He proposed natural selection as the mechanism of evolution

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

Question 10 of 15

Question 11 of 15

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

1.Convergent evolution has occurred

2.Evolution is occurring now

3.All organisms are descended from a common ancestor

4.Evolution occurs gradually from

Question 11 of 15

Question 12 of 15

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

1.P²

2.2Pq

3.q²

4.d. q

Question 12 of 15

Question 13 of 15

13. 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 13 of 15

Question 14 of 15

14. 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 bat and the forelimbs of a human

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

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

Question 14 of 15

Question 15 of 15

15. Which condition can be explained by Lamarckism?

1.How humans became bipedal

2.How giraffes got their long neck

3.All of these

4.How humans lost their tail

Question 15 of 15

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