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Epidermis: Plant Tissue System Video Lecture - NEET

FAQs on Epidermis: Plant Tissue System Video Lecture - NEET

1. What is the epidermis in plants?

Ans. The epidermis is a plant tissue system that serves as the outermost layer of cells in leaves, stems, roots, flowers, and fruits. It acts as a protective barrier against physical damage, water loss, and pathogens.

2. How does the epidermis protect plants?

Ans. The epidermis protects plants by forming a waterproof barrier that prevents excessive water loss through evaporation. It also acts as a physical barrier against pathogens, insects, and other external threats.

3. What are the different cell types found in the epidermis?

Ans. The epidermis consists of different cell types, including pavement cells, guard cells, and trichomes. Pavement cells are the most common and form a continuous layer. Guard cells surround stomata, which regulate gas exchange. Trichomes are hair-like structures that can provide additional protection or aid in various functions such as reducing water loss or deterring herbivores.

4. How does the epidermis contribute to plant growth and development?

Ans. The epidermis plays a crucial role in plant growth and development. It helps in the absorption of water and nutrients from the soil through root hairs present on the epidermis of roots. It also regulates gas exchange through stomata, allowing plants to take in carbon dioxide and release oxygen during photosynthesis. Additionally, the epidermis can produce specialized structures like root hairs or trichomes that aid in specific functions.

5. How can the epidermis be damaged or affected by environmental factors?

Ans. The epidermis can be damaged or affected by various environmental factors. Excessive exposure to UV radiation can cause sunburn and damage the epidermal cells. Drought or extreme temperatures can lead to wilting or cell death in the epidermis. Pathogens or pests can attack and penetrate the epidermis, causing diseases. Pollution or chemical exposure can also harm the epidermis and disrupt its protective functions.

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Sep 05, 2025 Last updated

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