Comment on the similarity between the flippers of dolphins and penguins, with reference to evolution.

State the significance of Coelacanth in evolution.

Comment on the similarity between the wing of a cockroach and the wing of a bird. What do you infer from the above with reference to evolution?

State the significance of biochemical similarities among diverse organisms in evolution.

Write the similarity between the wing of a butterfly and the wing of a bat. What do you infer the above with reference to evolution?

What is the basis of origin of variations in organisms as described by Hugo de Vries?

What did Louis Pasteur's experiment on 'Killed yeast' demonstrate? Name the theory that got disproved on the basis of his experiment.

'Sweet potato tubers and potato tubers are the result of convergent evolution'. Justify the statement.

Identify the examples of homologous structures from the following:
(a) Vertebrate hearts.
(b) Thorns in Bougainvillea and tendrils of Cucurbita.
(c) Food storage organs in sweet potato and potato.

Darwin's finches are a good example of

A baby has been born with a small tail.It is a case exhibiting

Age of fossils in the past was generally determined by radiocarbon method and other methods involving radioactive elements found in the rocks.More precise methods, which were used recently and led to the revision of the evolutionary periods for different groups of organisms,includes

Diversification in plant life appeared

Which of the following is a living fossil?

Presence of gills in the tadpole of frog indicates that

Which of the following walked upright?

Which of the following evolved first

The turtle and tortoise evolved from

Which of the following walked like gorillas and chimpanzees?