Question

Dead plant remains such as leaves, bark, flowers and dead remains of animals, including fecal matter constitute
(a) humus
(b) detritus
(c) detrivore
(d) saprophytes

Answer 1

Answer:

Dead plant remains such as leaves, bark, flowers and dead remains of animals, including fecal matter constitute

(a) humus

(b) detritus✔

(c) detrivore

(d) saprophytes

Answer 2

Dead plant remains such as leaves, bark, flowers, and dead remains of animals, including fecal matter, constitute (b) detritus.

(b) detritus:

The raw material for decomposition is detritus. Detritus is an organic matter made up of decomposing plant and animal matter.

Explanation for incorrect answer:

(a) humus:

The microbial decomposition of dead vegetation (leaves, branches) and microorganisms produces humus, which is a reddish-black colored aggregation of matter. So this is the wrong answer.

(c) detrivore:

A detritivore is a heterotrophic organism that feeds on detritus for its nutrition. So this is the wrong answer.

(d) saprophytes:

Saprophytes digest dead and decaying matter through extracellular digestion. So this is the wrong answer.

As a result, detritus includes dead plant remains such as leaves, bark, and flowers, as well as a dead animal, remains such as feces.

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