Which of the following is not purpose of transpiration ?
- Supplies water for photosynthesis
- Maintains shape and structure of plants
- Helps in translocation of sugar from source to sink
- Cools leaf surfaces
The Correct Option is C
Solution and Explanation
Top Questions on Transport of water and minerals in plants
Match List I with List II
LIST I Water moisture content
LIST II Defined as / Term A Gravitational water I Portion of water readily absorbed by plant roots B Capillary water II Water that moves into, through II. and and out of the soil under influence of gravity C Hygroscopic water III Water that fills the micropores of the soil D Available water IV Water held most tightly to soil particles (31 bars of suction) Choose the correct answer from the options given below:
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a Iron i Photolysis of water b Zinc ii Pollen germination c Boron iii Required for chlorophyll biosynthesis d Manganese iv IAA biosynthesis - NEET (UG) - 2020
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- Thiobacillus is a group of bacteria helpful in carrying out:
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- The adsorption of water by hydrophilic compounds like cellulose and pectin in root hair cell wall is called _______.
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- The lowest water potential in the xylem will be of:
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Questions Asked in KEAM exam
- A Spherical ball is subjected to a pressure of 100 atmosphere. If the bulk modulus of the ball is 1011 N/m2,then change in the volume is:
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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