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प्रश्न
Compare the characteristic features of insect pollinated and wind pollinated flowers. Explain how the respective features assist in pollination.
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उत्तर
Characteristic feature of insect pollinated plant :
- Flowers are large, colourful, fragnant and rich in nectar to attract insect. If flowers are small then clustered into inflorescence.
- Pollengrains produced are sticky so that it easily sticks to insect body.
- Stigma is sticky so that pollen grains stuck on insect body transfer to stigma.
Wind Pollinated Flowers:
- Produces light, non-sticky or winged pollengrain so they can be transported in wind currents.
- Anthers are well exposed so that pollens can be easily carried by wind.
- Stigma is large and often feathery to easily trap the airborne pollen grain.
- Flowers are small and inconspicuous and often packed in to an inflorescence.
- Flowers have a single ovule in each ovary.
APPEARS IN
संबंधित प्रश्न
Explain the post-pollination events leading to seed production in angiosperms.
State the name of the chief pollinating agent against the corresponding plant by choosing from those given in brackets.
Dahlia_______ .
Fill in the blanks with suitable words.
_______ is a water-pollinated flower.
Differentiate Between Cross Pollination and Self Pollination:
What are the adaptations which are required in self-pollinated plants?
In some plants anther and stigma mature at the same time this condition is called ______.
The flower which does not open at all are called ______.
Match the Column I with Column II.
| Column I | Column II |
| A. Pea | (i) Xenogamy |
| B. Jawar | (ii) Epihydrophily |
| C. Maize | (iii) Anemophily |
| D. Vallis | (iv) Bisexual |
| E. Cannabis | (v) Geitonogamy |
Describe any three adaptations in hydrophilous flowers.
Briefly discuss any two methods by which plants avoid self-pollination.
