Which of the following statements are correct?

(A) Certain mass of living material at each trophic level is called as standing crop.

(B) The crop that can withstand adverse conditions is called standing crop .

(C) The amount of nutrients in soil is called Biomass.

(D) Only Biotic components make an Ecosystem .

(E) Most of Phytoplanktons are member of algae.

Choose the correct answer from the options given below:

(A) and (E) only

The correct answer is Option (1)- (A) and (E) only

Each trophic level has a certain mass of living material at a particular time called as the standing crop. The standing crop is measured as the mass of living organisms (biomass) or the number in a unit area. The biomass of a species is expressed in terms of fresh or dry weight.

The amount of nutrients, such as carbon, nitrogen, phosphorus, calcium, etc., present in the soil at any given time, is referred to as the standing state.

Interaction of biotic and abiotic components result in a physical structure that is characteristic for each type of ecosystem.

Phytoplankton, also known as microalgae, are similar to terrestrial plants in that they contain chlorophyll and require sunlight in order to live and grow. The phytoplanktons are commonly include many green algae and blue gren algae.