Question

Give the meaning of the term cohesion.​

Answer 1

Answer:

1 : the act or state of sticking together tightly especially : unity the lack of cohesion in the Party — The Times Literary Supplement (London) cohesion among soldiers in a unit. 2 : union between similar plant parts or organs.

Explanation:

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Answer 2

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Cohesion:-

Cohesion is the attraction between the water molecules which leads to the formation of an unbroken water column in xylem.

$\sf{\star}$ Additional Informations:-

The transport of water and minerals take place by a theory name transpiration pull theory which includes the following features:-

(i) Cohesion

(ii) Tension:-

Transpirational pull develops a negative pressure or tension in the xylem sap. Evaporation of water creates a force called suction force which pulls water in upward direction from the xylem cells of roots.

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$\sf{\longrightarrow}$What are Xylem vessels?

✓ Xylem vessels are tubular in structure. They extend from the root of the plant to the top of the plants as they transport water from the root of the plant to the top of the plants. They are placed one above another hence, forming a continuous channel.

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$\sf{\longrightarrow}$ What is transpiration?

✓ Transpiration is the process in which a plant loses its water from the surface of the aerial parts of the plant through evaporation.

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