Tag: mud and stones

Quizzes (6) Questions (113)

Questions Related to mud and stones

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

Good soil is

  1. Which holds whole of the water that enters into it

  2. Which allows percolating the water slowly from it

  3. Which allows water to pass very quickly from it

  4. Which allows limited amount of water to retain into it
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Water should percolate slowly in a soil because if water passes too rapidly, then many of the minerals and organic matter useful for plants will simply be washed away. If there is no percolation and all the water is simply held up in the soil, then there will be poor aeration and respiration in plant roots will suffer.

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

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

  1. Light soil

  2. Alluvial soil

  3. Heavy soil

  4. Sedimentary soil
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sediment refers to solid fragments of inorganic or organic material, that comes from the weathering of rock and are carried and deposited by wind, water, or ice. Sedimentary soil is the transported soil, which is formed in this manner. Alluvial soil is the already formed soil, carried and deposited by flowing water as rivers etc.

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

Soil best suited for plant growth is

  1. Clay

  2. Sandy loam

  3. Sandy

  4. Gravel
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sandy loam is considered ideal for plant growth because it balances the drainage properties of sand with the nutrient and water-retention capabilities of clay and silt. Pure clay is often too waterlogged, while pure sand drains too quickly.

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

Humus is important for plant growth as it is

  1. Made of dead organic matter

  2. Derived from leaves

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

  4. Partially decomposed
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Humus is the organic component of soil formed by the decomposition of leaves and other plant matter. It is vital because it provides essential nutrients and significantly improves the soil's ability to hold water.

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

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?

  1. 1 only

  2. 2 only

  3. Both 1 and 2

  4. Neither 1 nor 2
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Anabaena, a cyanobacterium, forms a symbiotic association with the water fern Azolla, fixing atmospheric nitrogen for the plant. Azotobacter is a well-known genus of free-living diazotrophic bacteria that reside in the soil. Thus, both statements are correct.