Plant Physiology Biochemistry

To solve the problem, we need to understand how water moves inside plants and which part of the plant is responsible for this movement.

1. Understanding the Structure of Plants:

Plants have different types of tissues that perform specific functions. Among these, two important tissues are xylem and phloem. They form part of the plant's vascular system, which is like the plant’s transportation network.

2. What is Xylem?

- Xylem is a special tissue made of long hollow tubes.
- Its main job is to carry water and dissolved minerals absorbed by the roots up through the stem and leaves.
- Water moves upward because of processes like capillary action, root pressure, and transpiration pull.
- Xylem cells are dead at maturity, which means they form empty tubes that act like pipes for water to flow easily.

3. What is Phloem?

- Phloem is another vascular tissue that transports food, especially sugars made by the leaves during photosynthesis.
- It moves food from the leaves (where it’s made) to other parts of the plant where it is used or stored.
- Unlike xylem, phloem cells are alive and help in distributing nutrients throughout the plant.

4. What About Epidermis and Stomata?

- The epidermis is the outer protective layer of the plant and does not transport water.
- Stomata are tiny openings mainly on the underside of leaves that control gas exchange (oxygen, carbon dioxide) and water vapor release but do not transport water inside the plant.

5. Conclusion:

Since the question is about the transport of water inside the plant, the correct tissue responsible is the xylem, which carries water and minerals from the roots to all parts of the plant.

Final Answer:

The tissue responsible for the transport of water in plants is Xylem.

To solve the problem, we need to identify the element that is essential for the synthesis of chlorophyll in plants.

1. Understanding Chlorophyll:

- Chlorophyll is the green pigment found in plants that allows them to absorb sunlight for photosynthesis.
- The structure of chlorophyll includes a central metal atom that is vital for its function.

2. Role of Elements in Chlorophyll:

- The central atom in the chlorophyll molecule is magnesium (Mg).
- Magnesium is crucial because it helps capture light energy during photosynthesis.
- Other elements like calcium, sodium, and potassium have important roles in plant health but are not part of the chlorophyll molecule.

Final Answer:

The element essential for the synthesis of chlorophyll is magnesium.