Tag: soil : our life

Questions Related to soil : our life

Which of the following are the substances that are present in the soil and required for the growth of crops?

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

  1. Manures

  2. Pesticides

  3. Fertilisers

  4. Nutrients

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Correct Option: D
Explanation:

We know that the growth of plants in the soil requires the presence of certain substances in it. This includes water and also nutrients present inside the soil.

Manures, as we know are prepared naturally by the process of decomposition of plant and animal bodies in the soi. They are not present in the soil but have to be prepared by composting and then added to the crop soil.
Pesticides are chemical substances that sprayed on the crop plants artificially to protect them from insect pests.
Fertilizers are also chemically prepared substances added to the soil to improves its nutritive value.
So, option D "Nutrients' is the correct answer.





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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'

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

The least porous soil among the following is a

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

  1. Loamy soil

  2. Silty soil

  3. Clay soil

  4. Peaty soil

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Correct Option: C

Which of the following soil is transported by wind

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

  1. Alluvial

  2. Aerial

  3. Eolian

  4. Glacial

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Correct Option: C

Soil is a mixture of

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

  1. Sand and clay

  2. Sand and humus

  3. Clay and humus

  4. Sand, clay and humus

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Correct Option: D

Soil formed by transportation of disintegrated parent material from one place to another is called

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

  1. Light soil

  2. Alluvial soil

  3. Heavy soil

  4. Sedimentary soil

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Correct Option: D