Read the following statements about cockroach
(i) In male cockroach, a characteristic mushroom shaped gland is present in the `6^(th)-7^(th)` abdominal segments which functions as an accessory reproductive gland
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 sinuses 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)

Explanation

To determine which statements about cockroaches are correct, let's analyze each statement step by step:

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 accurate. Male cockroaches do possess a mushroom-shaped gland located in the 6th and 7th abdominal segments, which serves as an accessory reproductive gland.
- **Conclusion**: This statement is correct.

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

3. **Statement (iii)**: "The fat body and uricose glands are glandular in function."
- **Analysis**: This statement is misleading. While the fat body and uricose glands are involved in metabolic and excretory processes, they are not primarily classified as glandular in function. The fat body is more associated with energy storage and metabolism, while the uricose glands are involved in excretion. Thus, this statement is incorrect.
- **Conclusion**: This statement is incorrect.

4. **Statement (iv)**: "Blood from sinuses enters the heart through ostia and is pumped anteriorly to sinuses again."
- **Analysis**: This statement is correct. In the open circulatory system of cockroaches, blood flows from the sinuses into the heart through openings called ostia and is then pumped back into the sinuses.
- **Conclusion**: This statement is correct.

**Final Conclusion**: The correct statements are (i), (ii), and (iv). Therefore, the answer is that the first, second, and fourth statements are correct.

### Summary of Correct Statements:
- (i) Correct
- (ii) Correct
- (iii) Incorrect
- (iv) Correct