One of the internal factors which affect the rate of transpiration is
A .big size of leaf
B .colour of the leaf
C. sunken stomata
D .sunny day

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Solution

Some plants possess stomata that are sunken into the leaf surface, dramatically increasing the boundary layer and slowing transpiration. Sunken means hidden stomata or stomata that are not directly exposed to the surface. It is in a small pit, which protects the escaping water vapor from air currents, decreasing water loss from the leaf.
So, the correct answer is C sunken stomata

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Similar questions

One of the internal factors which affect the rate of transpiration is

(a) big size of the leaf (b) colour of the leaf

Name the following :

(a) Openings on the stem through which transpiration occurs.

(b) The process by which the intact plant loses water in the form of droplets.

(d) A plant in which the stomata are sunken.

(e) The apparatus to record the rate of transpiration in a cut shoot.

(f) Any two parts of a leaf which allow transpiration.

(g) The structure in a leaf that allows guttation.

(h) Loss of water as droplets from the margins of certain leaves.

Give suitable explanation for the following :

(a) A higher rate of transpiration is recorded on a windy day rather than on a calm day.

(b) Excessive transpiration results in the wilting of the leaves.

(d) More transpiration occurs from the lower surface of a dorsiventral leaf.

(e) Cork and bark of trees help in preventing loss of water.

(f) Perspiration and transpiration help to cool the body temperature of the organism.

(g) On a bright sunny day, the leaves of certain plants roll up.

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