NEET BIOLOGY

PLANT PHYSIOLOGY

PLANT MOVEMENT

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
An example of part movement in plants is
A
folding of leaves
B
germination
C
hydrotropism
D
Both A and B
Explanation: 

Detailed explanation-1: -The folding up of leaves of a sensitive plant (Mimosa pudica) on touching is an example of plant movement caused due to the sudden loss of water from the pad-like swelling called “pulvini” which is present at the base of the leaves.

Detailed explanation-2: -Example of movement in plants: A sunflower turns its face towards the sun due to phototropism.

Detailed explanation-3: -Complete answer. Thigmotropism. Phototropism. The movement of leaves of the sensitive plant is a nastic movement called thigmotropism.

Detailed explanation-4: -The folding up of leaves belonging to a sensitive plant such as Mimosa pudica is an example of nastic movement. The stimulus for this movement is “touch”. Hence this movement is also called thigmonasty.

Detailed explanation-5: -When a plant exhibits some growth movement in response to a stimulus, it is referred to as tropism. Tropism is specific to the direction of the stimulus. Plants can either display a negative or positive movement in response to a stimulus.

There is 1 question to complete.