The transverse section of plant material shows the following anatomical features under microscope Palisade parenchyma towards adaxial surface and spongy parenchyma towards abaxial surface. Plant material should be :-

Options

A. Isobilateral leaf
B. Dorsiventral leaf
C. Monocotyledonae stem
D. Dicotyledonae stem

Answer

To solve the question regarding the transverse section of plant material that shows palisade parenchyma towards the adaxial surface and spongy parenchyma towards the abaxial surface, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Features**:
- The question mentions two types of parenchyma: palisade parenchyma and spongy parenchyma.
- Palisade parenchyma is typically found on the upper side (adaxial surface) of leaves, while spongy parenchyma is located on the lower side (abaxial surface).

2. **Understand the Function**:
- Palisade parenchyma is responsible for photosynthesis due to its chloroplast-rich cells and is usually tightly packed to maximize light absorption.
- Spongy parenchyma has air spaces that facilitate gas exchange and also contributes to photosynthesis but to a lesser extent than palisade parenchyma.

3. **Determine the Plant Type**:
- The arrangement of these parenchyma types is characteristic of dicotyledonous plants (dicots), which typically have a differentiated leaf structure with distinct upper and lower layers.

4. **Conclusion**:
- Given the anatomical features described, the plant material is likely a dicotyledonous leaf, such as that of a broadleaf plant.

### Final Answer:
The plant material should be a dicotyledonous leaf.