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प्रश्न
Name the five types of tropisms.
उत्तर
The five types of tropisms are phototropism, thigmotropism, geotropism, hydrotropism and chemotropism.
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संबंधित प्रश्न
What does a stem (or shoot) do in response to gravity? What is this phenomenon known as?
Name the plant part which bends in the direction of gravity but away from light.
Define phototropism. Give one example of phototropism.
While conducting experiments to study the effect of various stimuli on the plants, it was observed that the roots of a plant X grow and bend towards two stimuli A and B but bend away from a third stimulus C. The stem of the plant X, however, bends away from stimuli A and B but bends towards the stimulus C. The stimulus B is known to act on the roots due to too much weight of the earth. Keeping these points in mind, answer the following question:
- What could stimulus A be?
- Name the stimulus B.
- What could stimulus C be?
- The branches of a fallen tree in a forest grow straight up in response to two stimuli. What could be these two stimuli out of A, B and C? Also name these two stimuli.
What are tropic movements? Briefly explain various types of tropic movements in plants.
Answer the following question.
What is tropism?
Any change in the environment to which an organism responds is called ____________.
Assertion: Plants do have a nervous system for control and coordination.
Reason: Plants use electrochemical means to convey information from cell to cell.
Give an example for the movement of plant part which is very quick and can be observed easily.
Name the stimulus which causes the following movement in plant:
phototropism
