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Test: Transpiration (Old NCERT) - Grade 12 MCQ


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5 Questions MCQ Test Biology for Grade 12 - Test: Transpiration (Old NCERT)

Test: Transpiration (Old NCERT) for Grade 12 2024 is part of Biology for Grade 12 preparation. The Test: Transpiration (Old NCERT) questions and answers have been prepared according to the Grade 12 exam syllabus.The Test: Transpiration (Old NCERT) MCQs are made for Grade 12 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Transpiration (Old NCERT) below.
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Test: Transpiration (Old NCERT) - Question 1

The bulliform cells of leaves lose their turgidity during excessive

Detailed Solution for Test: Transpiration (Old NCERT) - Question 1

In some grasses (isobilateral leaves), on epidermis, there are some larger, thin walled cells called bulliform cells are present, which in dry condition lose water through transpiration and thus the rolling up of leaves occurs, e.g., in Poa, Agropyron, Amophilla, etc.

Test: Transpiration (Old NCERT) - Question 2

Match column-I with column-II and select the correct option from the codes given below.

Detailed Solution for Test: Transpiration (Old NCERT) - Question 2

(A) Vein ending - Guttation
(B) Necessary evil - Transpiration
(C) Semi-permeable membrane - Osmosis
(D) Cohesion - Transpiration pull
(E) Stomata closure - ABA
So, the correct answer is (b).

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Test: Transpiration (Old NCERT) - Question 3

The given figure shows two states of a stomata.

In which of the conditions (i) and (ii), guard cells will have higher water content?

Detailed Solution for Test: Transpiration (Old NCERT) - Question 3

When water supply is adequate, guard cells become turgid, their thin walls get extended and thick walls become slightly concave so that the stomatal aperture opens as shown in figure, condition (i).

Test: Transpiration (Old NCERT) - Question 4

Amphistomatic leaf, with stomata distributed equally on both the surfaces, is an example of

Detailed Solution for Test: Transpiration (Old NCERT) - Question 4

Leaf having stomata equally distributed on both surfaces is called amphistomatic (isobilateral) leaf, e.g., most monocot leaves.

Test: Transpiration (Old NCERT) - Question 5

Loss of water in the form of vapours from the living tissues of aerial plant parts is called

Detailed Solution for Test: Transpiration (Old NCERT) - Question 5

The loss of water in the vapour form from the exposed parts of a plant is called transpiration the loss of water due to transpiration is quite high. It is 2 litres per day in sunflower 36 − 45 litres in apple and upto 1 tonne per day in elm tree.

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