Read the following statements about cockroach.
(i) In male cockroach, a characteristic mushroom shaped gland is present in the 6th - 7th abdominal segments which functions as an accessory reproductive gland.
(ii) Cockroach is uricotelic
(iii) The fat body and uricose glands are glandular in function.
(iv) Blood from sinuses enter heart through ostia and is pumped anteriorly to issunses again.
Which of the above statements are correct ?

Options

A. (i), (ii) and (iv)
B. (ii) and (iii)
C. (i) and (iv)
D. (ii) and (iv)

Answer

To determine which statements about the cockroach are correct, let's analyze each statement step by step.

### Step-by-Step Solution:

1. **Statement (i)**: "In male cockroach, a characteristic mushroom-shaped gland is present in the 6th - 7th abdominal segments which functions as an accessory reproductive gland."
- **Analysis**: This statement is true. The male cockroach has a mushroom-shaped gland located in the 6th and 7th abdominal segments, known as the mushroom gland, which serves as an accessory reproductive gland.

2. **Statement (ii)**: "Cockroach is uricotelic."
- **Analysis**: This statement is also true. Cockroaches excrete nitrogenous waste in the form of uric acid, which categorizes them as uricotelic organisms.

3. **Statement (iii)**: "The fat body and uricose glands are glandular in function."
- **Analysis**: This statement is false. The fat body primarily serves as an energy storage organ rather than having a glandular function. While uricose glands are involved in the storage of uric acid, they are not primarily glandular in function.

4. **Statement (iv)**: "Blood from sinuses enters heart through ostia and is pumped anteriorly to sinuses again."
- **Analysis**: This statement is true. In the cockroach's circulatory system, blood from the sinuses enters the heart through openings called ostia, and the heart pumps it anteriorly back to the sinuses.

### Conclusion:
Based on the analyses:
- Statements (i), (ii), and (iv) are correct.
- Statement (iii) is incorrect.

### Final Answer:
The correct statements about the cockroach are (i), (ii), and (iv).

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