Question

Chemoreceptors in Periplaneta are of this type:

• A. Ommatidia
• B. Sensillae
• C. Scolopidia
• D. Tympanal organs

Hint:

Studying the sensory biology of pests like cockroaches can aid in developing more effective pest control strategies.

Answer 1

The Correct Option is B

To solve the problem, we need to identify the correct chemoreceptors in Periplaneta (cockroach).

1. Understanding the Chemoreceptors in Periplaneta:
Periplaneta, also known as the cockroach, has specialized structures to detect chemical stimuli. These are known as chemoreceptors and can be categorized as:

• Ommatidia: These are photoreceptor units found in the compound eyes of insects, used for vision, not for chemical detection.
• Sensillae: These are the correct chemoreceptors in cockroaches. Sensillae are hair-like structures that detect chemical signals in the environment, primarily involved in taste and smell.
• Scolopidia: These are mechanoreceptors involved in detecting vibrations and pressure, not chemicals.
• Tympanal organs: These are specialized structures used for hearing, not for chemical detection.

2. Analyzing the Correct Option:
The correct type of chemoreceptors in Periplaneta are Sensillae, which are responsible for chemical detection.

Final Answer:
The correct option is (B) Sensillae.