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प्रश्न
Plants take in carbondioxide for photosynthesis but need ______ for their living.
उत्तर
Plants take in carbondioxide for photosynthesis but need oxygen
for their living.
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संबंधित प्रश्न
Design an experiment to demonstrate hydrotropism.
What happens to the moonflower
- during the daytime, and
- at night?
What is this phenomenon known as?
What is the difference between photonasty and thigmonasty?
What are the different types of tropisms? Define each type of tropism. Write the name of stimulus in each case
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:
What is the difference between movement of flower in sunflower plant and closing of the leaves in the Mimosa pudica?
Assertion (A): If the plant part moves in the direction of gravity, it is called positive geotropism.
Reason (R): Stem shows positive geotropism.
While conducting experiments to study the effects of various stimuli on the plants, it was observed that the roots of 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 stimulus A and B but bends towards the stimulus C. The stimulus B is known to act on the roots due to factors related to Earth. Keeping these points in mind, answer the following questions:
- What could be stimulus A?
- Name the stimulus seen in B.
- What could be stimulus-C?
______ of sweet peas exhibit thigmotropism.
