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Introduction to Transport in Plants Video Lecture - NEET

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1. What is transport in plants?
Ans. Transport in plants refers to the movement of water, minerals, and nutrients throughout the plant's tissues. It is essential for the plant's growth, development, and survival.
2. How does water move in plants?
Ans. Water moves in plants through a process called transpiration. Transpiration is the loss of water vapor from the plant's leaves through tiny openings called stomata. This loss of water creates a pressure gradient that pulls water up from the roots through the xylem vessels.
3. What is the role of xylem in plant transport?
Ans. Xylem is a specialized tissue in plants responsible for transporting water and minerals from the roots to the leaves. It consists of long, hollow cells called vessel elements and tracheids that are interconnected. The cohesion and adhesion forces between water molecules allow for the upward movement of water in the xylem.
4. How are nutrients transported in plants?
Ans. Nutrients in plants are transported through the phloem tissue. The phloem is responsible for the movement of sugars, amino acids, and other organic substances from the leaves to other parts of the plant, such as the roots and fruits. This process is called translocation and requires energy from the plant.
5. What factors affect plant transport?
Ans. Several factors can affect plant transport, including temperature, humidity, light intensity, and wind. Higher temperatures and lower humidity can increase transpiration rates, leading to increased water uptake by the roots. Light intensity can affect the rate of photosynthesis, which influences the demand for water and nutrients. Wind can increase transpiration rates and affect the direction of water movement in plants.
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