One of the following statement is NOT true of spirogyra

A.

it is a simple multicellular plant

B.

during conjugation, its gametes, which are structurally and physiologically similar, fuses to form a zygote

C.

it possesses spiral chloroplast which enables the plant to photosynthesize

D.

its cells are protected externally by layer of mucilage

E.

there are pyrenoids along the chloroplast

Correct answer is B

No explanation has been provided for this answer.