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Short Tricks: Transport in Plants - Cycles Video Lecture | Biology Class 11 - NEET

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FAQs on Short Tricks: Transport in Plants - Cycles Video Lecture - Biology Class 11 - NEET

1. What is the process of transport in plants?
Ans. Transport in plants refers to the movement of water, nutrients, and other substances throughout the plant. This process occurs through two main pathways: the xylem and the phloem. The xylem transports water and minerals from the roots to the leaves, while the phloem transports sugars and other organic molecules from the leaves to the rest of the plant.
2. How does water move from the roots to the leaves in plants?
Ans. Water moves from the roots to the leaves in plants through a process called transpiration. Transpiration is the loss of water vapor from the plant's surface, mainly through small openings called stomata on the leaves. As water evaporates from the leaves, it creates a negative pressure that pulls water up through the xylem vessels, against gravity, from the roots to the leaves.
3. What role do the root hairs play in plant transportation?
Ans. Root hairs are tiny extensions of root cells that greatly increase the surface area of the roots. Their main function is to absorb water and minerals from the soil. As water is absorbed by the root hairs, it enters the root cells and then moves into the xylem vessels for upward transport to the rest of the plant. The root hairs play a crucial role in the uptake of water and nutrients, facilitating the transport process in plants.
4. How are nutrients transported in plants?
Ans. Nutrients are transported in plants through the phloem tissue. The phloem is responsible for the translocation of sugars, amino acids, hormones, and other organic molecules produced in the leaves or stored in other parts of the plant. This transportation occurs in both upward and downward directions, depending on the plant's needs. The movement of nutrients in the phloem is driven by pressure gradients and requires energy in the form of ATP.
5. What factors affect the rate of transportation in plants?
Ans. Several factors can influence the rate of transportation in plants. These include temperature, humidity, light intensity, and wind. Higher temperatures and lower humidity can increase water loss through transpiration, resulting in a higher rate of water movement. Similarly, increased light intensity can stimulate photosynthesis, leading to an increased demand for water and nutrient transport. Wind can also enhance transpiration rates by removing the boundary layer of still air around the leaves, facilitating water movement.
264 videos|514 docs|310 tests
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