Q.Differentiate between wind pollinated and insect pollinated flowers.
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Start your 14-day free trial to unlock the full solution →Wind-pollinated flowers are adapted for random pollen dispersal, featuring abundant, light pollen and inconspicuous flowers, while insect-pollinated flowers are adapted to attract specific vectors, displaying showy petals, scent, nectar, and sticky pollen.
Flowers have evolved diverse strategies to ensure the transfer of pollen from the anther to the stigma, a process called pollination. The specific characteristics a flower develops are direct adaptations to its pollinator. The fundamental intuition is that for pollination to be successful, the flower must either efficiently broadcast its pollen to a non-specific medium (like wind) or effectively attract and reward a specific agent (like an insect) to carry its pollen. These two distinct approaches lead to vastly different floral structures and features.
Here's a detailed comparison of wind-pollinated (anemophilous) and insect-pollinated (entomophilous) flowers:
| Characteristic | Wind Pollinated Flowers (Anemophilous) | Insect Pollinated Flowers (Entomophilous) |
|---|---|---|
| Pollen | Produced in enormous quantities; very light, small, dry, and smooth to be easily carried by wind. Non-sticky. | Produced in smaller quantities; relatively larger, heavier, often sticky or spiny to adhere to insect bodies. |
| Anthers | Versatile (loosely attached to filament), often large and exposed, hanging outside the flower to release pollen into the wind. | Firmly attached, often enclosed within the flower, positioned to brush against the insect. |
| Stigma | Large, feathery, or branched, often sticky, and highly exposed to efficiently trap airborne pollen. | Smaller, compact, often sticky, and positioned within the flower to receive pollen from the insect. |
| Perianth (Petals & Sepals) | Absent or highly reduced, inconspicuous, dull-coloured (e.g., green, brown). No need to attract pollinators. | Well-developed, large, brightly coloured (e.g., red, yellow, blue) to attract insects visually. |
| Nectaries & Nectar | Absent. No reward needed for wind. | Present, producing sweet, sugary nectar to reward insect visitors. |
| Scent | Absent. No need to attract pollinators. | Often present, producing a distinct fragrance (pleasant or foul) to attract insects from a distance. |
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