Position of head in relation to body axis of cockroach is known as
(a) Epignathous
(b) Hypognathous
(c) Prognathous
(d) None of these

Options

A. Epignathous
B. Hypognathous
C. Prognathous
D. None of these

Answer

To determine the position of the head in relation to the body axis of a cockroach, we need to understand the different types of head orientations in insects. Here’s a step-by-step solution:

### Step 1: Understand the Question
The question asks about the orientation of the head in relation to the body axis of a cockroach. We need to identify the correct term that describes this orientation.

### Step 2: Identify the Options
The options provided are:
(a) Epignathous
(b) Hypognathous
(c) Prognathous
(d) None of these

### Step 3: Define Each Term
- **Epignathous**: This term refers to a head position where the mouthparts are directed upwards.
- **Hypognathous**: This term describes a head position where the mouthparts are directed downwards, and the long axis of the head is vertical or at a right angle to the body axis.
- **Prognathous**: This term indicates a head position where the mouthparts are directed forward, parallel to the body axis.
- **None of these**: This option implies that none of the provided terms are correct.

### Step 4: Analyze the Cockroach's Head Position
In the case of a cockroach, the head is oriented such that:
- The long axis of the head is vertical.
- The mouthparts are directed downwards.

This matches the definition of **hypognathous** orientation.

### Step 5: Choose the Correct Answer
Based on the definitions and the analysis of the cockroach's head position, the correct answer is:
**(b) Hypognathous**