Sunkun stomata _______ the rate of transpiration.
Sunken stomata decreases the rate of transpiration.
One of the internal factors which affect the rate of transpiration is
(a) big size of the leaf (b) colour of the leaf
(c) sunken stomata (d) sunny day
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.
(c) An instrument used to find the rate of transpiration.
(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.
Which of the following statements are true and which ones are false? Give reason in support of your answer.
(a) Potometer is an instrument used for demonstration of transpiration occurring from the lower surface of a leaf.
(b) Hydathodes are similar to stomata in plant physiology.
(c) Atmospheric humidity promotes transpiration from a green plant.
(d) Some desert plants have sunken stomata on their leaves.
(e) Most transpiration occurs during midday.