Difference between directional movement and non-directional movement
Answers
Answer: IN Simple Terms ,
Explanation:
a Stimuli is responsible for the movement of the plant parts towards or away from it. This movement is called as Tropic Movement. Phototropism: movement of plant towards or away from the light. Geotropism: movement of plant parts towards the earth or away from it. Hydrotropism: movement of plant parts towards or away from any source of water. b Both the brain and the spinal cord are protected by bone: the brain by the bones of the skull and the spinal cord is protected by a set of ring-shaped bones called vertebrae
The movement of a plant part in response to an external stimulus in which the direction of response is not determined by the direction of stimulus is known as Nastic movement. It is also known as Nasties. The stimuli may be classified as light, heat, touch or contact, etc.
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