Question

How many of the following statements are correct regarding the class basidiomycetes?
a) Clamp connections occur between adjacent cells.
b) Primary mycelium is well developed and elaborate.
c) Secondary mycelium develops fruiting bodies, called basidiocarps.
d) Some members produce multinucleate gametes called coenogametes.
e) Sexual reproduction is by gametangial contact or gametangial conjugation.
f) Hyphae are septate with dolipore septa.

• A. Two
• B. Three
• C. Four
• D. Five

Answer 1

Answer: (B)

Three

Clamp connection is a hook-like structure formed by hyphal cells of basidiomycota. It ensures that each segment of hypha separated by septa receives a set of differing nuclei. These are obtained through mating of hyphae of different sexual types. During sexual reproduction, a haploid spore germinates and grows into a germ tube, which develops into primary mycelium. In basidiomycetes, secondary mycelium develops basidiocarps- the fruiting bodies. These basidiocarps produce spores on basidia. In zygomycetes, gametes are multinucleate and are called coenogametes. In ascomycetes, oomycetes and zygomycetes, sexual reproduction is by gamentangial contact or gamentangial conjugation. In basidiomycetes, hyphae are septate with dolipore septa. Hence, out of the given statements, only statements a, c and f are correct regarding the class basidiomycetes.

Thus, the correct answer is 'Three.'