Question

Through which of the following plants do the maximum transpiration occur?

• A. Bryophytes.
• B. Mesophytes.
• C. Thallophytes.
• D. Pteridophytes.

Answer 1

The correct option is B

Mesophytes.

The correct option is option B.

Explanation of the correct option:

Transpiration:

1. The loss of water in the form of vapors from a plant's leaves is called transpiration.
2. Transpiration occurs through the stomatal pores in the leaves.
3. The process of transpiration supplies water for photosynthesis, transports minerals from the soil to all plant parts, cools leaf surfaces, and maintains the shape and structure of plant cells.

Mesophytes:

1. The group of terrestrial plants that grow neither in hot nor dry conditions are known as mesophytes.
2. In mesophytes, stomata are present on either side of the leaf.
3. About 91% of water is lost by transpiration in mesophytes.
4. Examples: Corn, Lilac, clover, etc.
5. Thus, mesophytes have a higher rate of transpiration.

Explanation of the incorrect options:

Option A:

1. Bryophytes are the members of kingdom plantae which are found in moist shaded regions of hilly areas.
2. Bryophytes are nonvascular plants, so no transpiration occurs.
3. Examples: Common liverwort, Mountain fern moss, etc.

Option C:

1. Thallophytes are also called lower plants or thalloid plants (plants that look like plants).
2. They do not possess vascular tissues, so no transpiration occurs.
3. Examples: Spirogyra, Fucus, etc.

Option D:

1. Pteridophytes are members of Kingdom Plantae and are found in cool, damp, and sandy rich soils.
2. Pteridophytes possess vascular tissues xylem and phloem and thus lose water vapors in small amounts.
3. Examples: Ferns, Club moss, Horsetail, etc.

Final answer: Through mesophytes, maximum transpiration occurs.