In a dorsiventral leaf, palisade parenchyma lies towards (A)____ and spongy parenchyma lies towards (B)____ in position.

Answer

To answer the question regarding the position of palisade and spongy parenchyma in a dorsiventral leaf, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Dorsiventral Leaf Structure**:
- A dorsiventral leaf is typical of dicotyledonous plants. It has two distinct surfaces: the upper (adaxial) and the lower (abaxial) surfaces.

2. **Identifying the Surfaces**:
- The upper surface of the leaf is referred to as the **adaxial surface**.
- The lower surface of the leaf is referred to as the **abaxial surface**.

3. **Locating Palisade Parenchyma**:
- The palisade parenchyma is a type of mesophyll tissue that consists of elongated cells that are tightly packed.
- In a dorsiventral leaf, the palisade parenchyma is located towards the **adaxial surface (A)**.

4. **Locating Spongy Parenchyma**:
- The spongy parenchyma, on the other hand, consists of loosely arranged cells with air spaces in between, facilitating gas exchange.
- In a dorsiventral leaf, the spongy parenchyma is found towards the **abaxial surface (B)**.

5. **Final Answer**:
- Therefore, the complete answer to the question is:
- (A) Adaxial surface
- (B) Abaxial surface

### Summary of the Answer:
- In a dorsiventral leaf, palisade parenchyma lies towards **(A) Adaxial surface** and spongy parenchyma lies towards **(B) Abaxial surface**.