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प्रश्न
What does a stem (or shoot) do in response to light? What is this phenomenon known as?
उत्तर
The stem of a plant grows upwards in response to light. This phenomenon is known as phototropism.
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संबंधित प्रश्न
Give the scientific terms used to represent the Bending of roots towards water.
What is a tendril?
What does a tendril do in response to the touch of a support? What is this phenomenon known as?
Give one example of a plant part which is positively hydrotropic as well as positively geotropic.
Why is the closing of a dandelion flower at dusk (when it gets dark) not a tropism?
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?
The leaves of Mimosa are sensitive to ____________.
The solar tracking of sunflower in accordance with the path of sun is due to ______.
When the leaves of the Mimosa pudica plant are touched with a finger, they fold up quickly.
Why do stems show positive phototropism?
