Question:

Water potential in the leaf tissue is positive (+) during

Updated On: May 30, 2022
  • excessive transpiration
  • low transpiration
  • excessive absorption
  • guttation
Hide Solution
collegedunia
Verified By Collegedunia

The Correct Option is B

Solution and Explanation

Water potential depends on the number of water molecules in the system. More the number of water molecules, greater will be the water potential. Water potential of all solutions is negative in comparison to pure water which has water potential as zero. Under the conditions, when there are more water molecules in the system, water potential is expected to be higher, e.g., under conditions of low transpiration in leaf tissue the water potential is expected to be positive. When transpiration is low, considerably more water molecules will be stuffed up inside leaf in the intercellular spaces giving rise to a positive water potential.
Was this answer helpful?
0
0

Top Questions on Transport in Plants

View More Questions

Questions Asked in KCET exam

View More Questions

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