A few statements with regard to sexual reprodction are given below.
(i) Sexual reproduction does not always require two individuals.
(ii) Sexual reproduction generally involves gametic fusion.
(iii) Meiosis never occurs during sexual reproduction.
(iv) External fertilisation is a rule during sexual reproduction.
Choose the correct statements from the option below.

Options

A. I and IV
B. I and II
C. II and III
D. I and IV

Explanation

To analyze the statements regarding sexual reproduction, let's evaluate each one step by step:

### Step 1: Evaluate Statement (i)
**Statement:** Sexual reproduction does not always require two individuals.

**Analysis:** This statement is true. In many plants, sexual reproduction can occur through self-pollination, where the male and female gametes come from the same individual. In animals, however, sexual reproduction typically involves two individuals. Therefore, this statement is correct.

### Step 2: Evaluate Statement (ii)
**Statement:** Sexual reproduction generally involves gametic fusion.

**Analysis:** This statement is also true. Sexual reproduction typically involves the fusion of male and female gametes, which is known as fertilization. This process is essential for the formation of a zygote, which develops into a new organism. Therefore, this statement is correct.

### Step 3: Evaluate Statement (iii)
**Statement:** Meiosis never occurs during sexual reproduction.

**Analysis:** This statement is false. Meiosis is a crucial process in sexual reproduction as it is responsible for the formation of gametes (sperm and eggs) through the reduction of chromosome number. Therefore, this statement is incorrect.

### Step 4: Evaluate Statement (iv)
**Statement:** External fertilization is a rule during sexual reproduction.

**Analysis:** This statement is also false. While external fertilization occurs in many aquatic organisms (like fish and amphibians), it is not a universal rule. Many organisms, including most mammals, utilize internal fertilization. Therefore, this statement is incorrect.

### Conclusion
Based on the evaluations:
- Statement (i) is correct.
- Statement (ii) is correct.
- Statement (iii) is incorrect.
- Statement (iv) is incorrect.

Thus, the correct statements regarding sexual reproduction are (i) and (ii).

### Final Answer
The correct statements are:
1. Sexual reproduction does not always require two individuals.
2. Sexual reproduction generally involves gametic fusion.