Broccoli has been developed from
cabbage through artificial selection.
Important Questions on Heredity and Evolution
The main concepts of two theories regarding the origin of life on earth are given. Arrange them in the following table. Write the name of theories as title.
(i) Life has originated in some other planet in the universe,
(ii)Changes occurred in the chemical substances in water, under specific conditions of the earth.
(iii) Organic substances identified in meteors supports this theory,
(iv) Life originated in the Ocean.
| A | B |
Observe the illustration and answer the questions.
Name the Scientists who devised the experimental setup shown above.
(a) What is a fossil?
(b) Give two ways by which you can find the age of a fossil.
Answer the following:
Which process can be illustrated by the example of the evolution of broccoli from wild cabbage?
Analyse the following illustration and answer the questions :
What proof of evolution does the illustration give?
Observe the illustration and answer the questions.
Which theory of evolution is substantiated by this experiment?
Answer the following:
Name:
Organs have different structures but perform the same function.
The tadpole larva of amphibians resembles fishes. How does this observation support evolution?
(i) Formation of protobionts
(ii) Synthesis of organic monomers
(iii) Synthesis of organic polymers
(iv) Formation of DNA-based genetic systems
