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प्रश्न
The stimulus in the process of thigmotropism is ______.
पर्याय
touch
gravity
light
chemical
उत्तर
The stimulus in the process of thigmotropism is touch.
Explanation:
The stimulus in thigmotropism is touch which causes movement.
APPEARS IN
संबंधित प्रश्न
Give one example of the movement of a plant part which is caused by the loss of water (or migration of water).
The root of a plant grows downward. This is known as ______.
How does phototropism occur in a plant stem (or shoot)? Explain with the help of labelled diagrams.
One of the following plant hormones is responsible for the phenomenon of phototropism in plants. This is :
(a) gibberellin
(b) eltroxin
(c) cytokinin
(d) auxin
The plant hormone which triggers the fall of mature leaves and fruits from the plant body is:
Which of the following are not tropisms?
(i) growing of pollen tube in response to a sugary substance
(ii) folding up of leaves of sensitive plant in response to touch
(iii) winding of tendril around a support in response to touch
(iv) opening up of the leaves of a daisy flower in response to light
(a) (i) and (ii) (b) (ii) and (iii) (c) (i) and (iv) (d) (ii) and (iv)
When the leaves of a sensitive plant are touched with a finger, they fold up and when light fades at dusk, the petals of a dandelion flower close.
state two ways in which the above two processes differ.
What is a tropic movement? Explain with an example.
Thigmonasty can be seen in ______.
The diagram given alongside shows a type of tropism. Study the same and answer the questions that follow:
- Name and define the type of tropism shown in the diagram.
- Label the guidelines (1) to (4).
- Name two effective stimulants that help in the growth of part (2).
- Name two groups of plants where part (2) grows towards gametophyte with the help of the stimulants mentioned in (c).
