Question

Which alkane is secreted by cockroaches to attract the opposite gender of its species?

• A. Octane
• B. Nonane
• C. Undecane
• D. Decane

Hint:

Undecane is one of the alkanes released by cockroaches as a pheromone to attract mates, particularly by females.

Answer 1

The Correct Option is C

Step 1: Understanding the role of alkanes in cockroach behavior.
Cockroaches release certain alkanes as pheromones to communicate, particularly to attract mates. One such alkane is undecane, which is secreted by female cockroaches to attract males.

Step 2: Analyzing the options.
(A) Octane: Octane is not the alkane used by cockroaches for this purpose.
(B) Nonane: Nonane is not involved in cockroach communication.
(C) Undecane: Correct — Undecane is the alkane secreted by cockroaches for attracting mates.
(D) Decane: Decane is also not involved in cockroach mate attraction.

Step 3: Conclusion.
The correct answer is (C) Undecane.