Question

3. ANSWER THE FOLLOWING QUESTIONS-
1. List the points that need to be kept in mind while sowing seeds.
2. Write a short note on nitrogen fixation.
3. What are the series of activities that a farmer performs for growing crops?
4. How do microorganisms help in cleaning the environment?
5. What is animal husbandry?
6. Write a short note on Pasteurization.
7. Explain briefly the process of fermentation.
8. Why is agriculture important to humans?
9. What is manure? Mention its types.
10. What factors should be kept in mind while storing grains?​

Answer 1

Answer: The seed must not be sown so depth that the seed does not get eater and sunlight, and not so above.

Using nitrogen from environment to make protein by the help of rhizobium present on root of plant.

Ploughing field , sowing,irrigation , protecting from weed , harvesting, storing.

Microorganism decompose the peel of fruit and vegetable and also decompose dead animal.

Rearing animal for milk , meat etc and to work on field etc.

Answer 2

Answer:

1. while sowing seeds we need to kept in mind the following things---

• alawys sows seed at uniform distance
• we should sow seeds after preparation of soil

1. movement of nitrogen from atmosphere to soil plants and animals then again in atmosphere is called nitrogen fixation .It is done by bacterium rhizobium
2. series for growing crops :preparation of soil,sowing seeds,adding manures and fetilizers ,irrigation, protecting from weeds ,harvesting,storage
3. microorganisms are used to degrade harmful smelly substance fro environment
4. rearing animals for different purposes is known as animal husbandry
5. rhe process in which milk is heated at 70 degreefor 15 -30 sec then suddenly chilled and stored
6. the process of conversion of sugar into alcohol is called fermentation
7. agriculture is important since we grkw our foods
8. manurw is an organic substance obtain by the DECOMPOSITION of planta and animal excreta
9. while storing grains these factors should be kept in mind

• clean and aerated grain bin
• use jute bags
• watch for insects
• check grains frequently
• keep cool in summer