Question

mention the role of vitamin A and vitamin D in human body. Write the characteristics of meristematic tissue.​

Answer 1

꧁༒❦ANSWER❦༒꧂

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Vitamin A is a fat-soluble vitamin that is stored in the liver.

Functions

Vitamin A helps form and maintain healthy teeth, skeletal and soft tissue, mucus membranes, and skin. It is also known as retinol because it produces the pigments in the retina of the eye.

Vitamin A promotes good eyesight, especially in low light. It also has a role in healthy pregnancy and breastfeeding.

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Vitamin D is a fat-soluble vitamin that is naturally present in a few foods, is added to other foods, and is available in many nutritional supplements.

Functions

The major biological function of vitamin

D is to maintain normal blood levels of calcium and phosphorus. Vitamin D aids in the absorption of calcium, helping to form and maintain strong bones. Research also suggests that sufficient intake of this fat-soluble vitamin may provide protection from and decrease an individual's risk of developing osteoporosis, hypertension, cancer, and several autoimmune diseases.Studies report that it triggers the body's immune cells to produce antibodies; therefore, vitamin D promotes an overall increase in the strength of the immune system.

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Characteristics of meristematic tissues: (any four)

1. They are made up of immature cells.

2. They have the capability to differentiate into any cell.

3. They are living and thin walled.

4. They are diploid in nature and show mitotic division.

5. The cells of meristematic tissues are rich in cytoplasm.

6. They do not contain reserve food materials, ER and plastids.

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Answer 2

Answer:

Vitamin A is a fat-soluble vitamin that is stored in the liver. Vitamin A helps form and maintain healthy teeth, skeletal and soft tissue, mucus membranes, and skin. It is also known as retinol because it produces the pigments in the retina of the eye.

Explanation:

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