An example of an external stimulus for a plant is light, which influences growth direction through phototropism, causing plants to bend toward the light source. An internal stimulus could be the plant's hormonal response to stress, such as the production of abscisic acid in response to drought, which triggers stomatal closure to conserve water. Both types of stimuli play crucial roles in a plant's survival and adaptation.
stimulus,an example a insect touching the hair like figures on a venus fly trap
Tropism is the response plants have towards external stimulus.
Tropism is the response plants have towards external stimulus.
What a plant or animal does after receiving a stimulus is an example of a reaction. If the stimulus is unexpected, the reaction is an involuntary one.
The closing of a Venus flytrap in response to the touch of an insect is an example of a plant responding to an external stimulus. The plant detects the movement of the insect triggering the trap to snap shut, capturing the prey for nutrition.
Leaf is an external organ of the plant
Tropism is the movement of a plant away from or toward a stimulus. The most easily found example of tropism is a plant's response to light. Plants tend to grow toward the light. This tendency is called 'phototropism'.
Exophyte is an internal or external Plant Parasite
Stimuli itself is of two types - external stimuli and internal stimuli. External stimuli refers to touch, pressure, heat etc. Internal stimuli refers to the stimuli produced by body components - like hormones etc.
A steam engine is an external combustion engine.
You need to know the plant and the stimulus.
Tropisms and nastic movements are both plant responses to external stimuli. however tropisms are depend on the direction of the stimulus nastic movements do not depend on the direction of a stimulus