Tag: evs

Questions Related to evs

The size of clay particles is

evs mud and stones soil types types of soil soil - types, uses and need for conservation

  1. Less than 0.002 mm

  2. More than 0.002 mm

  3. 0.2 mm to 2 mm

  4. None of the above

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Correct Option: A

Least porous soil is

evs mud and stones soil types types of soil soil - types, uses and need for conservation

  1. Clay soil

  2. Sandy soil

  3. Loam soil

  4. Gravelly soil

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Correct Option: A

Soil best suited for plant growth is

evs mud and stones soil types types of soil soil - types, uses and need for conservation

  1. Clay

  2. Sandy loam

  3. Sandy

  4. Gravel

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Correct Option: B

Which of the following has smallest of soil particles?

evs mud and stones soil types types of soil soil - types, uses and need for conservation

  1. Loam soil

  2. Sand

  3. Clay

  4. Silt

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Correct Option: C

Humus is important for plant growth as it is

evs mud and stones soil types types of soil soil - types, uses and need for conservation

  1. Made of dead organic matter

  2. Derived from leaves

  3. Rich in nutrients and increases water holding capacity of soil

  4. Partially decomposed

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Correct Option: C

Soil particles determine its

evs mud and stones soil types types of soil soil - types, uses and need for conservation

  1. Texture

  2. Field capacity

  3. Water holding capacity

  4. Soil flora

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Correct Option: A

Water holding capacity is highest in

evs mud and stones soil types types of soil soil - types, uses and need for conservation

  1. Sandy soil

  2. Silt soil

  3. Clay soil

  4. Loam soil

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Correct Option: C

Consider the following statements:
1. Anabaena lives symbiotically with Azolla
2. Azotobacter is a free - living organism in the soil.
Which of the statements given above is/are correct?

evs mud and stones soil types types of soil soil - types, uses and need for conservation

  1. 1 only

  2. 2 only

  3. Both 1 and 2

  4. Neither 1 nor 2

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Correct Option: A

Least porous soil is

evs mud and stones soil types types of soil soil - types, uses and need for conservation

  1. Silt soil

  2. Peat soil

  3. Clay soil

  4. Loam soil

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Correct Option: C
Explanation:

Soil can be classified on the basis of the size of the particle and its water holding capacity into clay soil, sand soil and loam soil, silt soil. Clay soil has the finest particles of all the soils. Hence, it is the least porous soil. Sand soil has the largest size of particles. They are the most porous soil.

Thus, the correct answer is 'Clay soil.' 

It rc and rs respectively represents cuticular and stomatal resistances, the total resistance (R) could be expressed as.

evs mud and stones soil types types of soil soil - types, uses and need for conservation

  1. $R=rc+rs$

  2. $R=r-rs$

  3. $\displaystyle\frac{1}{R}=\frac{1}{rc}+\frac{1}{rs}$

  4. $\displaystyle\frac{r}{R}=\frac{1}{rc}-\frac{1}{rc}$

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Correct Option: A