During opening of stomata, influx of $K^+$ ions into the guard cells is accompanied with efflux of
- $Na^+$
- $K^+$
- $Cl^-$
- $H^+$
The Correct Option is D
Solution and Explanation
Top Questions on Transport in Plants
- Choose the correct statements among the following
I. No energy is used directly by the plant to translocate water.
II. The mechanism of water transport from the soil through the plant body to the atmosphere includes diffusion, bulk flow, and osmosis.
III. Water moves in the root via apoplast, transmembrane and symplast pathway.
IV. The cohesion tension theory explains water transport in xylem.- AP EAPCET - 2025
- Botany
- Transport in Plants
- Choose the correct statements:
I. Movement of water through apoplast involves crossing the cell membrane
II. Movement through apoplast is gradient dependent
III. In symplast, water moves through plasmodesmata
IV. Transpiration pull is less important than root pressure in tall plants- AP EAPCET - 2025
- Botany
- Transport in Plants
- Assertion (A): Transport of plant growth regulators is strictly polarized and unidirectional.
Reason (R): Organic and mineral nutrients undergo multi-directional transport.- AP EAPCET - 2025
- Botany
- Transport in Plants
- Assertion (A): Xylem transports water and minerals from roots to other parts of the plant.
Reason (R): Xylem vessels have sieve plates that facilitate transport.- AP EAPCET - 2025
- Biology
- Transport in Plants
- In which form is energy stored in the mitochondria?
- TS POLYCET - 2025
- Biology
- Transport in Plants
Notes on Transport in Plants
Concepts Used:
Transport in Plants
The two types of conducting tissues that are used to transport the water and minerals in plants such as:
Xylem:
Xylem is a long, non-living tube running from the roots to the leaves via the stem. The water is absorbed by the root hair and goes through cell-to-cell movement by osmosis until it reaches the xylem. This water is then transported throughout the xylem vessels to the leaves and is evaporated by the process of transpiration.
The xylem is also composed of lengthened cells like the phloem. However, the xylem is mainly accountable for transporting water to all plant parts from the roots. Since they serve such a vital function, a single tree would have a lot of xylem tissues.
Phloem:
The phloem is accountable for the translocation of nutrients and sugar like carbohydrates, produced by the leaves to areas of the plant that are metabolically in force. It is powered by living cells. The cell walls of these cells structurize small holes at the ends of the cells known as sieve plates.
Means of Transportation in Plants:
Transportation in plants is by 3 means, they are as follows:
- Diffusion
- Facilitated diffusion
- Active Transport