Question

Mass of living matter at a trophic level in an area at any time is called?

• A. Detritus
• B. Standing crop
• C. Humus
• D. Standing state

Answer 1

The correct option is B

Standing crop

The correct option is B.

Explanation of the correct option:

1. Standing crop is the amount of biomass present in an ecosystem.
2. It represents the entire living matter.

Explanation for the incorrect options:

Option A:

Detritus is a dead particulate organic material, as distinguished from dissolved organic material.

Option C:

Partially decomposed plant matter in the soil is humus.

Option D:

1. The standing state is the amount of inorganic nutrients found in an ecosystem.
2. It represents part of non-living matter.
3. It circulates between living and non-living components of the ecosystem.
4. It is being regularly depleted and replenished by living matters.

Final answer: Mass of living matter at a trophic level in an area at any time is called Standing crop.