"Modern methods of breeding animals and plants can alleviate the global food shortage". Comment on the statement and give suitable examples.

"Maintenance of personal and public hygiene is necessary for prevention and control of many infectious diseases." Justify the statement giving suitable examples.

The term 'describle trait' can mean different things for different plants. Justify the statement with suitable exmples.

Stems of some plants remain in the ground and serve the functions of perennation and storage of food. Give examples.

Sometimes due to biotic /abiotic factor the climax remain in a particular seral stage (pre climax) without reaching climax. Do you agree with this statement? If yes give a suitable example.

Animal husbandry and plant breeding programmes are the examples of:

Many discoveries in science have been accidental. This is true for plant hormones also. Can you justify this statement by giving an example? Also what term is used for such accidental findings?

In the area of plant breeding , it is important not only to preserve the seeds of the variety being cultivated, but also to preserve all its wild relatives. Explain with a suitable example.

Mutations are beneficial for plant breeding. Taking an example, justify the statement.