CBSE Class 10 Science Heredity and Evolution Quiz 2

1. New species may be formed if

A (i) and (ii) B (i) and (iii) C (ii), (iii) and (iv) D (i), (ii) and (iii)

2. Two pea plants one with round green seeds (RRyy) and another with wrinkled yellow (rrYY) seeds produce F

A (i) and (ii) B (i) and (iv) C (ii) and (iii) D (i) and (iii)

3. A basket of vegetables contains carrot, potato, radish and tomato. Which of them represent the correct homologous structures?

A Carrot and potato B Carrot and tomato C Radish and carrot D Radish and potato

4. If the fossil of an organism is found in the deeper layers of Earth, then we can predict that

A the extinction of organism has occurred recently B the extinction of organism has occurred thousands of years ago C the fossil position in the layers of Earth is not related to its time of extinction D time of extinction cannot be determined

5. A trait in an organism is influenced by

A paternal DNA only B maternal DNA only C both maternal and paternal DNA D neither by paternal nor by maternal DNA

6. Select the group which shares maximum number of common characters.

A two individuals of a species B two species of a genus C two genera of a family D two genera of two families

7. According to the evolutionary theory, formation of a new species is generally due to

A sudden creation by nature B accumulation of variations over several generations C clones formed during asexual reproduction D movement of individuals from one habitat to another

8. In peas, a pure tall plant (TT) is crossed with a short plant (tt). The ratio of pure tall plants to short plants in F

A 1 : 3 B 3 : 1 C 1 : 1 D 2 : 1

9. 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