Select correct features for Pinus.
(i) Monoecious plant (ii) Pinnate leaves
(iii) Sunken stomata (iv) Heterosporous

Options

A. I,ii & iv
B. I,iii & iv
C. ii,iii & iv
D. I,ii,iii & iv

Answer

To solve the question regarding the correct features of Pinus, we will analyze each feature one by one:

1. **Monoecious plant**:
- Pinus is indeed a monoecious plant, meaning it has both male and female reproductive structures (cones) on the same individual. Therefore, this feature is **correct**.

2. **Pinnate leaves**:
- Pinnate leaves are typically characterized by a feather-like arrangement of leaflets. However, Pinus has needle-like leaves, which are not considered pinnate. Hence, this feature is **incorrect**.

3. **Sunken stomata**:
- Pinus has sunken stomata, which help reduce water loss through transpiration, especially in xerophytic conditions. This adaptation is crucial for survival in dry environments. Thus, this feature is **correct**.

4. **Heterosporous**:
- Pinus is a heterosporous plant, meaning it produces two types of spores: microspores (male) and megaspores (female). Therefore, this feature is also **correct**.

Now, summarizing the correct features:
- Correct features: Monoecious plant, Sunken stomata, Heterosporous.
- Incorrect feature: Pinnate leaves.

Thus, the correct answer includes the features: 1st (Monoecious plant), 3rd (Sunken stomata), and 4th (Heterosporous).

### Final Answer:
The correct features for Pinus are:
- (i) Monoecious plant
- (iii) Sunken stomata
- (iv) Heterosporous