Question

Arrange the following spores of black rust fungi in their I to IV spore stages.

(A) Basidiospore
(B) Uredospore
(C) Aeciospore
(D) Teliospore

Choose the correct answer from the options given below:

• A. (A), (B), (C), (D).
• B. (D), (C), (A), (B).
• C. (B), (A), (D), (C).
• D. (C), (B), (D), (A).

Hint:

Match each spore name to its numbered stage (I to IV) in the rust life cycle.

Answer 1

The Correct Option is D

Step 1: The black rust fungus, Puccinia graminis, has spore stages numbered 0 to IV. Stage I is the aeciospore, stage II is the uredospore, stage III is the teliospore and stage IV is the basidiospore.
Step 2: So the correct I to IV order is Aeciospore (C), Uredospore (B), Teliospore (D), Basidiospore (A).
Step 3: This matches option 4.