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Leaf: parts-lamina, Petiole, Stipule Video Lecture - NEET

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FAQs on Leaf: parts-lamina, Petiole, Stipule Video Lecture - NEET

1. What are the main parts of a leaf?
Ans. The main parts of a leaf are the lamina, petiole, and stipule. The lamina is the flat, green part of the leaf that carries out photosynthesis. The petiole is the stalk that connects the leaf to the stem. The stipule is a small, leaf-like structure found at the base of the petiole.
2. What is the function of the leaf lamina?
Ans. The leaf lamina is responsible for carrying out photosynthesis, which is the process by which plants convert sunlight, carbon dioxide, and water into glucose and oxygen. The lamina contains chloroplasts, which are specialized organelles that contain chlorophyll and are essential for capturing sunlight and producing energy.
3. What is the role of the petiole in a leaf?
Ans. The petiole serves as the connection between the leaf and the stem of a plant. It provides support and allows the leaf to be positioned optimally to receive sunlight for photosynthesis. Additionally, the petiole contains vascular tissues, such as xylem and phloem, which transport water, nutrients, and sugars between the leaf and the rest of the plant.
4. What are stipules and what is their function?
Ans. Stipules are small, leaf-like structures that are often found at the base of the leaf petiole. Their function can vary depending on the plant species. Stipules can provide additional support to the leaf, protect the young leaf bud, or even act as a defense mechanism against herbivores. In some plants, stipules may be modified into thorns or glands.
5. How do the different leaf parts work together to support plant growth?
Ans. The different leaf parts work together to support plant growth by carrying out essential functions. The leaf lamina captures sunlight and performs photosynthesis to produce energy for the plant. The petiole connects the leaf to the stem and transports water, nutrients, and sugars. Stipules can provide support and protection. Together, these leaf parts contribute to the overall health and growth of the plant.
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