Question : Wilting of plants occurs due to excessive :
Option 1: respiration
Option 2: guttation
Option 3: absorption
Option 4: transpiration
Correct Answer: transpiration
Solution : The correct option is transpiration.
Plant wilting is generally caused by excessive transpiration. Transpiration is the mechanism by which plants remove water vapour through tiny pores called stomata in their leaves. When transpiration rates surpass the plant's ability to absorb water from the soil via its roots, turgidity (the hardness of plant cells) is lost, resulting in wilting, in which the leaves and stems become limp and droop.
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Question : Muscle fatigue occurs due to accumulation of ______.
Option 1: ATP
Option 2: ADP
Option 3: Lactic Acid
Option 4: Carbonic Acid
Question : The colour of the plants is green due to the presence of:
Option 1: Urea
Option 2: Carbon dioxide
Option 3: Chlorophyll
Option 4: Oxygen
Question : Which of the following is true for photoperiodism?
Option 1: It occurs only in plants.
Option 2: It is related to flowering in plants.
Option 3: It is related to the feathers of animals.
Option 4: It is the reaction of organisms to the length of day or night.
Question : The process of imbibition involves
Option 1: Diffusion
Option 2: Capillary action
Option 3: Absorption
Option 4: Both 1 and 2
Question : The kidney-shaped guard cells are present in which of the following?
Option 1: Dicot plants
Option 2: Monocot plants
Option 3: Both of the above
Option 4: Algae
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