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प्रश्न
Describe an activity to demonstrate phototropism.
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उत्तर
To demonstrate phototropism in plants a sunflower plant is taken and kept in sunlight. It will be observed that the flower head of sunflower will move from east to west along with the movement of Sun. This shows that the flower head of sunflower is positively phototropic and moves in response to sunlight stimulus.
संबंधित प्रश्न
What is pollination?
Fill in the blank by selecting suitable word:
A flower bearing only male or female parts is known as __________ flower.
Mention the function of Flower.
Draw a diagram of the longitudinal section of a flower exhibiting germination of pollen on stigma and label (i) ovary, (ii) male germ-cell, (iii) female germ-cell and (iv) ovule on it.
Identify the odd. Stigma, Style, Pollen, Ovary.
Fill in the blank by selecting suitable word:
Transfer of pollen grains from the anther to the stigma is known as______________.
A student is observing the temporary mount of a leaf peel under a microscope. Draw a labelled diagram of the structure of stomata as seen under the microscope
What does germination mean?
Match the following
| 1. | Petal | Opuntia |
| 2. | Fern | Chrysanthemum |
| 3. | Phylloclade | Attracts insect |
| 4. | Hooks | Spore |
| 5. | Sucker | Bignonia |
In human beings, fertilization occurs in the ______
