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8. Some dinosaurs had feathers although they could not fly but birds have feathers that
help them to fly. In the context of evolution this means that
a. reptiles have evolved from birds
b. there is no evolutionary connection between reptiles and birds
c. feathers are homologous structures in both the organisms
d. birds have evolved from reptiles.
9. The more characteristics two species have in common :
a. More closely they are related and more recently they had a common ancestors.
b. More distantly they are related and more recently they have common ancestors.
c. More closely they are related and more distantly they have common ancestors.
d. More distantly they are related and more distantly they have common ancestors.
10. Which of the following is the ancestor of „Broccoli‟?
a. Cabbage
b. Cauliflower
c. Wild cabbage
d. Kale

SUBJECTIVE

Q. Questions Marks Level
NO
1. What are fossils? 1 E
2. In which layer of the earth will we find fossils of organisms that lived 1 E
in the recent past?
3. List and explain two methods by which the age of fossils are 3 AV
determined.
4. a) What is artificial selection? 3 AV
b) Name the descendants of wild cabbage.
c) Name an invertebrate and a vertebrate fossil.
5. Give two uses of fossils. How does the study of fossils provide 3 D
evidence in favour of organic evolution?
6. a) Planaria, insects, octopus and vertebrates all have eyes. Can we 3 D
group eyes of these animals together to establish a common
evolutionary origin? Justify your answer.
b) “Birds have evolved from reptiles”. State evidence to prove the
statement.

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