• What is genetics? • Give the common name of the plant on which Mendel performed his experiments. • What for did Mendel use the term factors and what are these factors called now? • What are genes? Where are the genes located?

Give one example of each of the characters that are inherited and the ones that are acquired in humans. Mention the difference between the inherited and the acquired characters.

Updated 1/12/2026

(a) What are “hormones”? (b) List four characteristics of hormones (c) Name the hormone required for the following: Functioning of mammary glands Regulation of calcium and phosphate Lowering of blood glucose Development of moustache and beard in human malc.

Updated 1/12/2026

Name the hormone responsible for regulation of • Metabolism of carbohydrates, fats and proteins • Balance of calcium and phosphate • Blood pressure • Water and electrolyte balance.

Updated 1/12/2026

In the food chain Grass → Deer → Lion operating in a forest, what will happen if all the (a) Lions are removed (b) Deer are removed.

Updated 1/12/2026

Why is DNA copying an essential part of the process of reproduction?

Updated 1/12/2026