Question

In ornithophilous plants, flowers lack _________

• A. sticky pollen grains
• B. nectar
• C. bright colour
• D. fragrance

Hint:

{Bird-pollinated flowers = bright colour + nectar, no fragrance}.

Answer 1

The Correct Option is D

Step 1: Understanding ornithophily.
Ornithophily refers to pollination by birds. Flowers adapted for bird pollination show specific structural and functional features.

Step 2: Characteristics of ornithophilous flowers.
These flowers are usually brightly coloured (often red or orange), produce abundant nectar, and have non-sticky pollen grains. Birds rely mainly on vision rather than smell.

Step 3: Conclusion.
Since birds do not depend on scent for locating flowers, ornithophilous flowers generally lack fragrance.