Palisade parenchyma is well developed in

Options

A. Mesophytes
B. Heliophytes
C. Sciophytes
D. Hygropohytes.

Answer

**Step-by-Step Solution:**

1. **Understanding Palisade Parenchyma:**
- Palisade parenchyma is a type of tissue found in the leaves of plants, specifically located just beneath the upper epidermis.
- It consists of elongated cells that are packed closely together.

2. **Function of Palisade Parenchyma:**
- This tissue contains a high concentration of chloroplasts, which are the organelles responsible for photosynthesis.
- Due to the presence of chloroplasts, the palisade parenchyma is primarily involved in the process of photosynthesis, capturing light energy to convert carbon dioxide and water into glucose and oxygen.

3. **Identifying the Types of Plants:**
- The question provides four options: mesophytes, heliophytes, skotophytes, and hygrophytes.
- **Mesophytes:** These plants thrive in moderate water conditions.
- **Heliophytes:** These are sun-loving plants that grow in areas with high light intensity.
- **Skotophytes:** These are shade-loving plants that prefer low light conditions.
- **Hygrophytes:** These plants grow in very moist or aquatic environments.

4. **Relating Palisade Parenchyma to Plant Types:**
- Since palisade parenchyma is involved in photosynthesis and is well-developed in conditions of high light intensity, it is most prominent in heliophytes.
- Heliophytes have a greater need for photosynthesis due to their exposure to abundant sunlight, thus necessitating a well-developed palisade parenchyma.

5. **Conclusion:**
- The correct answer to the question is **heliophytes** (option B), as they have a well-developed palisade parenchyma due to their adaptation to high light environments.