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प्रश्न
How does phototropism occur in a plant stem (or shoot)? Explain with the help of labelled diagrams.
उत्तर
The stems of plants grow towards sunlight showing positive phototropism.
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संबंधित प्रश्न
What is the stimulus in geotropism?
Give one example of a plant part which is positively phototropic but negatively geotropic.
Which of the following is a growth movement and which is not?
- Folding up of leaves of sensitive plant on touching with hand.
- Folding up of petals of dandelion flower when light fades.
Fill in the following blank :
...... is the hormone that causes phototropism in plants
Analogy:
Towards a stimulus: ______:: Away from the stimulus: Negative tropism.
Write the scientific terms used to represent the following:
Bending of roots towards the water.
The leaves of the 'chhui-mui' plant begin to fold up and droop in response to a stimulus. Name the stimulus and write the cause for such a rapid movement. Is there any growth involved in the movement?
Which parts of a plant exhibit Positive hydrotropism?
Name the stimulus which causes the following movement in plant:
Geotropism
Differentiate between:
Positive and negative tropism
