Which of the statements below is not characteristic of wind-pollinated flowers?

Step 1: Analyze the question We need the statement that is NOT a feature of wind-pollinated (anemophilous) flowers. Three options are true features, and one is false.

Step 2: Recall the concept Wind-pollinated flowers (e.g., maize, guinea corn, and other grasses) are adapted to catch and carry pollen through the air. Typical features:

• Small, dull, inconspicuous petals
• No scent and no nectar, since there are no insects to attract
• Large, feathery or branched stigmas to trap airborne pollen
• Long, exposed stamens (anthers) that dangle so the wind can shake the pollen loose
• Pollen grains that are light, smooth, small, and dry, produced in very large quantities so they travel easily

Step 3: Check each option

• A. Large and feathery stigmas: True. This increases the surface area for trapping pollen.
• B. Nectary absent: True. There is no need to attract insects.
• C. Pollen grains with rough, spiny surfaces: False. Rough, spiny, or sticky pollen is typical of insect-pollinated flowers, because it clings to the insect's body. Wind-borne pollen is smooth and light.
• D. Flowers not scented: True. Scent is for attracting insects.

Step 4: Conclusion Option C is the odd one out, so it is the statement that is not characteristic of wind-pollinated flowers.

Exam tip: Remember the contrast:

• Wind: smooth, light pollen, feathery stigma, no scent, no nectar.
• Insect: spiny or sticky pollen, bright petals, scent, nectar.

If you see "rough, spiny, or sticky pollen" in a question, think insect pollination right away.