Advertisements
Advertisements
प्रश्न
What does a tendril do in response to the touch of a support? What is this phenomenon known as?
उत्तर
Tendrils grow towards a support in response to their touch. This phenomenon is known as thigmotropism.
APPEARS IN
संबंधित प्रश्न
What is a tendril?
Define phototropism. Give one example of phototropism.
What is the difference between thigmotropism and thigmonasty? Name one plant which exhibits thigmotropism and one plant which exhibits thigmonasty. What behaviour (or responses) of these plants make you think that they exhibit thigmotropism and thigmonasty respectively?
The growth of tendrils in pea plants is due to the :
(a) effect of sunlight on the tendril cells facing the sun
(b) effect of gravity on the part of tendril hanging down towards the earth
(c) rapid cell division and elongation in tendril cells that are away from the support
(d) rapid cell division and elongation in tendril cells in contact with the support
The tropic movement that helps the climbing vines to find a suitable support is ______.
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 ______.
State whether true or false. If false, correct the statement.
Shoot is positively phototropic and negatively geotropic.
Response of plant roots towards water is called:
______ flowers bloom as the temperature increases.
Where are auxins synthesized in a plant? Which organ of the plant shows:
- Positive phototropism
- Negative geotropism
- Positive hydrotropism
