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Insect-pollinated (entomophilous) flowers differ from wind-pollinated flowers chiefly in that entomophilous flowers usually have:
ATiny, smooth, dry pollen blown over long distances
BBright colour, scent and nectar with sticky pollen
CLarge protruding hairy stigmas trapping the pollen
DPollen that floats on water to reach the stigma
Answer & Solution
Correct answer: B. Bright colour, scent and nectar with sticky pollen
1. Entomophily is pollination by insects such as honey bees and flies.
2. To attract insects, these flowers are brightly coloured and have scent and nectar.
3. Their pollen is larger with a pitted, spiny exine so it sticks firmly to insects and the sticky stigma.
4. Tiny smooth dry pollen and large hairy protruding stigmas are wind (anemophily) traits, so they are wrong.
5. Floating pollen on water is a hydrophily trait, so it is ruled out.
6. Therefore bright colour, scent, nectar and sticky pollen are the entomophily traits.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 17 Reproduction in Plants and Animals "Pollination by insects", p.254_
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