Memebers of Phycomycetes are found in
(i) aquatic habitats
(ii) on decaying wood
(iii) moist and damp places
(iv) as obligate parasites on plants.
Choose from the following options.1.None of the above, 2.(i) and (iv), 3.(ii) and (iii), 4.All of the above

Options

A. None of the above
B. (i) and (iv)
C. (ii) and (iii)
D. All of the above

Explanation

To solve the question regarding the habitats of members of Phycomycetes, we will analyze each option provided.

### Step-by-Step Solution:

1. **Understanding Phycomycetes**: Phycomycetes, also known as the class of fungi, primarily include members that are aquatic or found in moist environments. They are characterized by their filamentous structures and reproductive methods.

2. **Evaluating Each Option**:
- **(i) Aquatic habitats**: Phycomycetes are commonly found in water bodies, making this statement true.
- **(ii) On decaying wood**: While some fungi can be found on decaying wood, Phycomycetes are not primarily associated with this habitat. This statement is not generally true for Phycomycetes.
- **(iii) Moist and damp places**: This is true as Phycomycetes thrive in moist environments, which is a characteristic of their habitat.
- **(iv) As obligate parasites on plants**: Some members of Phycomycetes can be obligate parasites, but this is not a defining characteristic for all members. Hence, this statement is also not universally true.

3. **Summarizing the Findings**:
- True statements: (i) and (iii)
- False statements: (ii) and (iv)

4. **Choosing the Correct Option**: Based on the above analysis, the correct answer is option 3: (ii) and (iii) are not both true, while (i) and (iii) are true. Therefore, the best option that includes true statements is option 3: (ii) and (iii).

### Final Answer:
**Option 3: (ii) and (iii)**