Question

QUESTION 17 Which of the following roles do protists play in ecological communities? A. Digestion of cellulose in termite guts B. Fish kills O C. Primary production in aquatic environments D. None of the possible answers is correct O E. "A", "B", and "C" are correct

Answer 1

17.

Protists are unicellular eukaryoti organisms. It includes, eukaryotic photosynthetic and non-photosynthetic organisms.

Flagellates are involved in cellulase digestion in termite gut. Certain dinoflagellates produce toxins which kill fish in large numbers. In the aquatic environ,ent, photosynthetic protists are primary producers.

All three statements are right (A, B,C).

Option "E: is the right one.

21. Fungi are non-photosynthetic decomposers or parasites. Many fungi are parasites in humans and in animals and plants. The body is called mycelium and is made of number of thin filaments called hypha.

Two statements B and C are right.

OPtion "E" is the right one.