C. SHORT-ANSWER QUESTIONS (TYPE 1): Answer in a sentence or two
1. Name three natural methods of adding nutrients to soil
2. What are weeds?
3. Why should grains be dried before storage?
4. Why does the government usually maintain a buffer stock of grains?
5. What is hybridization?
6. List the steps involved in the nitrogen cycle.
7. What do you mean by nitrogen fixation?
8. What is nitrogen assimilation?
9. What enables leguminous plants to fix nitrogen?
10. What is animal husbandry?
Answers
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Answers
1.Natural methods of adding nutrients to soil includes adding of manure , Mixed cropping and Field Fallowing.
2.Weeds are unwanted plants that grows with the crops cultivated in the fields.
3.Grains are dried before storage to reduce the moisture in it , if there is moisture left behind the grain might get rotten or get infected by fungus or other organisms.
4.The government usually maintain a buffer stock of grains to ensure that there won't be acute shortage of food due to natural disasters or man-made events like wars.
5.Hybridization is the process of crossing species of a certain plant or animal with another species to create a new variety.
6.The steps involved in the nitrogen cycle are - Nitrogen Fixation ,Nitrification,Assimilation,Ammonification and Denitrification.
7.Nitrogen Fixation is the process by which plants converts nitrogen into forms they can utalise with the help of certain bacteria.
8.The process of absorption of nitrogen compounds from the plants is called Nitrogen Assimilation.
9.Leguminous plants have a certain bacteria called Rhizobium bacteria which helps them to fix nitrogen.
10.Animal husbandry is the branch of agriculture that deals with rearing of animals for meat , eggs , milk , wools or any such products they provide.