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प्रश्न
The growth movement of plant parts which occurs due to touch stimulus is called ______.
विकल्प
Heliotropism
Chemotropism
Hydrotropism
Thigmotropism
उत्तर
The growth movement of plant parts which occurs due to touch stimulus is called thigmotropism.
Explanation:
Thigmotropism is the term used to describe the behaviour of plant elements that undergo growth movement in response to touch stimuli. For example, the the coiling of tendrils to their support.
संबंधित प्रश्न
Name the type of chemical substances that control the growth in plants.
How are tropic movements helpful to plants? Explain with an example.
A plant's response to gravity is called ______.
Define thigmotropism. Give one example of thigmotropism.
There are three plants A, B and C. The flowers of plant A open their petals in bright light during the day but close them when it gets dark at night. On the other hand, the flowers of plant B open their petals at night but close them during the day when there is bright light. The leaves of plant C fold up and droop when touched with fingers or any other solid object.
- Name the phenomenon shown by the flowers of (i) plant A and (ii) plant B.
- Name one flower each which behaves like the flower of (i) plant A and (ii) plant B.
- Name the phenomenon exhibited by the leaves of plant C.
- Name a plant whose leaves behave like those of plant C.
- Which plant/plants exhibit the phenomenon based on growth movements?
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 one way in which the above two processes are similar.
A growing seedling is kept in the dark room. A burning candle is placed near it for a few days. The tip part of the seedling bends towards the burning candle. This is an example of ______.
The stimulus in the process of thigmotropism is:
Chlorophyll differs from hemoglobin by the presence of its central molecule ______.
Which parts of a plant exhibit Positive hydrotropism?
