1) what are Rabi crop and kharif crop?
2) why is agriculture necessary?
3) how are potatoes grown?
4) list the various agents of dispersal.
Answers
Answer:
1) The crops that are sown in the rainy season are called kharif crops. (also known as the summer or monsoon crop) in India. ... Crops that are grown in the winter season, from November to April are called Rabi Crops. Some of the important rabi crops are wheat, barley, peas, gram and mustard.
2) For decades, agriculture has been associated with the production of essential food crops. Agriculture is the main source of national income for most developing countries. ... However, for the developed countries, agriculture contributes a smaller per cent age to their national income.
3) As the potato plant grows, its compound leaves manufacture starch that is transferred to the ends of its underground stems (or stolons). The stems thicken to form a few or as many as 20 tubers close to the soil surface. ... The buds generate shoots that grow into new plants when conditions are again favorable.
4)There are five main modes of seed dispersal: gravity, wind, ballistic, water, and by animals. Some plants are serotinous and only disperse their seeds in response to an environmental stimulus.
Answer:
1. Rabi crop - Crops that are grown in winter season from November to April are termed as Rabi crops.
eg. Wheat ,barley ,pea ,gram, mustard etc.
Kharif crop - Crops that are grown in rainy season from June to September are termed as kharif crops.
eg. Rice, paddy, Bajra, millets etc.
2. To feed rapidly growing population large amount of food is required. Agricultural sector being backbone of the economy is necessary.
4. There are mainly four agents of dispersion-
Water
Wind
Animals
Explosion