FAQs on Active & Passive Transport - Transport in Plants, Biology, Class 11

Question 1

1. What is active transport in plants?

Accepted Answer

Ans. Active transport in plants is the process by which plants use energy to move molecules across their cell membranes against a concentration gradient. This transport mechanism requires the use of specialized proteins called pumps, which actively move molecules from an area of lower concentration to an area of higher concentration. An example of active transport in plants is the uptake of minerals from the soil into the roots.

Question 2

2. What is passive transport in plants?

Accepted Answer

Ans. Passive transport in plants is the process by which molecules move across the cell membrane without the need for energy expenditure. This movement occurs along the concentration gradient, meaning molecules move from an area of higher concentration to an area of lower concentration. Passive transport in plants includes processes such as diffusion, osmosis, and facilitated diffusion.

Question 3

3. How does active transport differ from passive transport in plants?

Accepted Answer

Ans. Active transport and passive transport in plants differ in terms of energy requirement and the direction of molecule movement. Active transport requires energy in the form of ATP to move molecules against the concentration gradient, from an area of lower concentration to an area of higher concentration. Passive transport, on the other hand, does not require energy and allows molecules to move along the concentration gradient, from an area of higher concentration to an area of lower concentration.

Question 4

4. What are the examples of active transport in plants?

Accepted Answer

Ans. Examples of active transport in plants include the uptake of minerals from the soil into the roots, the transport of sugars from source to sink tissues, and the accumulation of ions in specialized storage structures such as vacuoles. These processes require the use of specific transport proteins and ATP to move molecules against their concentration gradients.

Question 5

5. What are the examples of passive transport in plants?

Accepted Answer

Ans. Examples of passive transport in plants include diffusion, osmosis, and facilitated diffusion. Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration, such as the movement of gases in and out of plant leaves. Osmosis is the movement of water molecules across a selectively permeable membrane, from an area of lower solute concentration to an area of higher solute concentration. Facilitated diffusion is the movement of molecules across the membrane with the help of specific carrier proteins, such as the transport of glucose in plant cells.

Active & Passive Transport - Transport in Plants, Biology, Class 11 Video

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