(a) Write the two limitations of traditional breeding technique that led to promotion of micro propagation.
(b) Mention of micro propagation.
(c) Give two examples where it is commercially adopted.

What is vegative propagation ? Give two suitable examples.

What is vagetative propagation ? Give two suitable examples.

What are micro - organisms ? Give any two examples of micro organisms.

What is mutualism ? Mention any two examples where the organisms involved are commercially exploited in agriculture.

(a) State the objective of animals breeding. (b) List the impotance and limitations of inbreeding. How can the limitation be overcome ? (c ) Give example of a new breed each of cattle and poultry .

(a) What is plant breeding? List the two steps the classical plant breeding involves. (b) How has the mutation breeding helped in improving crop varieties? Give one example where this technique has helped. (c) How has the breeding programme helped in improving the public nutritional health? State two examples in support of your answer.

Observe the diagram given alongside and answer the following questions: (a) What do you observe when lead nitrate is heated? (b) Mention the two gases evolved during heating. (c ) Write the balanced chemical equation for it. (d) What is the type of chemical reaction called? (e) Give one more example of this type of reaction.