EASY
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What is the composition of soil?

Important Questions on Nutrition in Plant

HARD
Science>Biology>Nutrition in Plant>Replenishment of the Nutrients in the Soil
How do leguminous plants make the soil fertile? 
EASY
Science>Biology>Nutrition in Plant>Replenishment of the Nutrients in the Soil
To make proteins plants use
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Science>Biology>Nutrition in Plant>Replenishment of the Nutrients in the Soil
How do nutrients get replenished in the soil?
MEDIUM
Science>Biology>Nutrition in Plant>Replenishment of the Nutrients in the Soil
Why are manures and fertilizers added to the soil in a farm? 
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Science>Biology>Nutrition in Plant>Replenishment of the Nutrients in the Soil
_____ is added to soil to grow a healthy crop.
EASY
Science>Biology>Nutrition in Plant>Replenishment of the Nutrients in the Soil
Overuse of pesticides lowers the _____ of soil.
EASY
Science>Biology>Nutrition in Plant>Replenishment of the Nutrients in the Soil
Manure is the plant and animal waste that maintains soil fertility for a long time.
MEDIUM
Science>Biology>Nutrition in Plant>Replenishment of the Nutrients in the Soil
What is Rhizobium? What is its function? How does Rhizobium help farmers? Why do farmers prefer to sow leguminous plants? In which form do plants absorb nitrogen?
MEDIUM
Science>Biology>Nutrition in Plant>Replenishment of the Nutrients in the Soil
Plants use nitrogen directly from air for growth.
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Science>Biology>Nutrition in Plant>Replenishment of the Nutrients in the Soil
In which form do plants absorb nitrogen? Why do farmers add nitrogenous fertilisers to the soil? Which microorganism helps to provide nitrogen to the plants? How do plants absorb nutrients other than carbohydrates from the soil?
MEDIUM
Science>Biology>Nutrition in Plant>Replenishment of the Nutrients in the Soil
Radharaman is a farmer. He always grows leguminous crops in alternation with other crop plants. Why? 
MEDIUM
Science>Biology>Nutrition in Plant>Replenishment of the Nutrients in the Soil
Make a list of activities for which soil is used.
MEDIUM
Science>Biology>Nutrition in Plant>Replenishment of the Nutrients in the Soil
List a few benefits of the soil with the help of this statement. (Soil provides us ground to live on.)
EASY
Science>Biology>Nutrition in Plant>Replenishment of the Nutrients in the Soil
Rhizobium bacteria fixes _____ in the soil. 
MEDIUM
Science>Biology>Nutrition in Plant>Replenishment of the Nutrients in the Soil
Write in your own words about the way in which animals and plants help to preserve and enrich the soil.
MEDIUM
Science>Biology>Nutrition in Plant>Replenishment of the Nutrients in the Soil

Match Column A with Column B.

Column A      Column B
1. Nitrogen i. supporter of combustion 
2. Oxygen ii. significant impact on temperature
3. Carbon dioxide iii. used in metallurgy 
4. Water vapour iv. used to fill air balloons
5. Argon  v. absorbs infrared radiation
6. Helium vi. the main constituent of proteins
EASY
Science>Biology>Nutrition in Plant>Replenishment of the Nutrients in the Soil
Cotyledons are also called-
EASY
Science>Biology>Nutrition in Plant>Replenishment of the Nutrients in the Soil
Which of the following is an example of symbiosis?
MEDIUM
Science>Biology>Nutrition in Plant>Replenishment of the Nutrients in the Soil
Why do you think air and water are necessary soil components?
EASY
Science>Biology>Nutrition in Plant>Replenishment of the Nutrients in the Soil

Write the uses of following natural resource.

Soil