Antennae of Cockroach have

Options

A. Gustatory receptors
B. Auditory receptors
C. Tactile receptors
D. Tactile and olfactory receptors.

Answer

### Step-by-Step Solution:

1. **Identify the Structure**: The question asks about the antennae of a cockroach. Antennae are sensory appendages found on the head of cockroaches.

2. **Function of Antennae**: The primary function of the antennae is sensory perception. They help the cockroach to detect various environmental stimuli.

3. **Types of Sensory Receptors**: The antennae of cockroaches contain several types of sensory receptors:
- **Olfactory Receptors**: These are responsible for the sense of smell.
- **Gustatory Receptors**: These are involved in the sense of taste.
- **Tactile Receptors**: These receptors help in detecting physical objects and touch.
- **Thermal Receptors**: These receptors sense temperature changes.
- **Humidity Receptors**: These receptors detect moisture levels in the environment.

4. **Main Receptor for Physical Objects**: Among these receptors, the tactile receptors play a crucial role in recognizing physical objects.

5. **Correct Answer**: Based on the presence of tactile and olfactory receptors in the antennae of cockroaches, the correct answer to the question is that the antennae have both tactile and olfactory receptors.

### Final Answer:
The antennae of a cockroach have tactile and olfactory receptors.

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