Tag: soil- our life

Questions Related to soil- our life

Which of the following crop is not grown in clayey soil?

evs soil : our life soil profile soil- our life soil and crops

  1. Wheat

  2. Gram

  3. Paddy

  4. Cotton

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Correct Option: D
Explanation:

Cotton crops are best grown in black soil. It is also known as black cotton soil. Black soil contains a very high proportion of calcium and magnesium and so cotton plants can obtain their necessary requirements. 

Lettuce and other plants with short roots can grow in clayey soil.
So, option D "Çotton" is the correct answer.

Fungi and bacteria grow mostly in

evs soil : our life soil profile soil- our life soil and crops

  1. Subsoil

  2. Top soil

  3. Bedrock

  4. All of the above

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Correct Option: B
Explanation:

Fungi and Bacteria grow mostly in top soil. As Fungi is a saprophyte it feeds,on decay and some bacteria decomposes the fallen leaves into manures.

So, the correct answer is 'top soil'

An area of soil is thoroughly wefted and allowed to drain until capillary movement of water stopped. The water contents of the soil will give an estimate of its

evs soil- our life soil profile soil and crops soil - types, uses and need for conservation

  1. Capillary water

  2. Storage water

  3. Field capacity

  4. Gravitational water

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Correct Option: C
Explanation:

(c) The amount of water retained by a unit weight of undisturbed soil after complete drainage under controlled coniditions is called field capacity or holard.

Loamy soil is best suited for the growth of 

evs soil : our life soil profile soil- our life soil and crops

  1. Mangroves

  2. Lentils

  3. Pulses

  4. Both B and C

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Correct Option: D

The quality of the soil is affected by which of the following factors?

evs soil : our life soil profile soil- our life soil and crops

  1. Dryness, water and low temperature

  2. Wind, rainfall and light

  3. Light, temperature and humidity

  4. Both B and C

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Correct Option: D

The soil which is preferred for the growth of the paddy crops is 

evs soil : our life soil profile soil- our life soil and crops

  1. Clayey soil

  2. Loamy soil

  3. Sandy soil

  4. Both B and C

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Correct Option: A

Consider the following fungi:
1. Arthrobotrys oligospora
2. Dactylella cionopaga
3. Streptorrryces rimosus
Which of these are predaceous for the biological control of nematodes in soil?

evs soil- our life soil profile soil and crops soil - types, uses and need for conservation

  1. 1 and 2

  2. 1 and 3

  3. 2 and 3

  4. 1, 2 and 3

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Correct Option: A

The best type of soil for agriculture is

evs soil- our life soil profile soil and crops soil - types, uses and need for conservation

  1. Clay

  2. Slit

  3. Loam

  4. Sand

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Correct Option: B
Explanation:

Explanation: Silt is granular material of a size somewhere between sand and clay, whose mineral origin is quartz and feldspar. Silt may occur as a soil or as sediment mixed in suspension with water (also known as a suspended load) in a body of water such as a river. Silty soil is usually more fertile than other types of soil, meaning it is good for agriculture.

Wheat is grown in the clayey soil because

evs soil- our life soil profile soil and crops soil - types, uses and need for conservation

  1. The soil contain more nitrogen

  2. The soil contain more phosphorous

  3. The soil contains humus

  4. Both A and B

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Correct Option: D

The best soil for gram is

evs soil- our life soil profile soil and crops soil - types, uses and need for conservation

  1. Clayey soil

  2. Sandy soil

  3. Loamy soil

  4. Both A and C

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Correct Option: D