Male Ascaris differs from female in having

Options

A. Lips
B. Amphids
C. Pineal spicules
D. Tail

Answer

To determine how male Ascaris differs from female Ascaris, we can analyze the key characteristics that distinguish the two sexes. Here’s a step-by-step solution:

### Step 1: Identify the Differences
We need to compare the male and female Ascaris based on their anatomical features. The main differences include tail shape, body size, and specific reproductive structures.

### Step 2: Tail Shape
- **Male Ascaris**: The tail of the male Ascaris is slightly curved.
- **Female Ascaris**: The tail of the female Ascaris is straight.

### Step 3: Body Size
- **Male Ascaris**: Males are generally smaller in size compared to females.
- **Female Ascaris**: Females are larger in size.

### Step 4: Reproductive Structures
- **Male Ascaris**: Males possess specialized structures called "pinea spicules" which are used during copulation.
- **Female Ascaris**: Females do not have these structures.

### Step 5: Analyze the Options
Now, let’s evaluate the options given in the question:
1. **Lips**: There is no significant difference in the lips of male and female Ascaris.
2. **Amphids**: Both sexes have amphids located at the base of the lips, showing no difference.
3. **Pinea Spicules**: Males have pinea spicules, while females do not.
4. **Tail**: The tail shape is a significant distinguishing feature (curved in males and straight in females).

### Conclusion
Based on the analysis, the correct answer to the question "Male Ascaris differs from female in having" is **D: Tail**, as the tail shape is a clear distinguishing characteristic.

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