Write the differences between wind pollinated and insect pollinated flowers. Give one example for each type of pollination.

Mention the type of immunisation — active or passive, that should be provided for each of the following:

(i) Prevention of tuberculosis in young children

(ii) Prevention of tetanus in a person injured in a road accident

Give reason in support of your answer.

(a) Write the conditions under which ‘J’ and ‘S’ shaped growth related population curves are observed.

(b) In a bacterial culture, which one of the growth curves mentioned above would be observed first and why?

Name the developmental stage that gets implanted in a pregnant human female. Describe its structure and the events that lead to its implantation.

What is an adapter molecule? State the two functions for which it is termed so.