NECO 2008 Biology · Question 44

The following attract insects to flowers for pollination EXCEPT

Options

  1. A.brightly coloured petals
  2. B.broad and grooved corolla
  3. C.presence of anther with light pollen grains
  4. D.presence of nectar
  5. E.presence of sweet scent

Answer: C. presence of anther with light pollen grains

Explanation written with AI and checked against the answer key

Analyze the question: We are asked which feature does NOT attract insects to flowers for pollination.

Concept: Insect-pollinated (entomophilous) flowers advertise themselves and offer rewards to insects. Typical features:

  • Large, brightly coloured petals (visual attraction)
  • Sweet scent (smell attraction)
  • Nectar (food reward)
  • Sticky, rough, or spiny pollen grains that cling to the insect's body
  • Often a broad or landing-platform corolla, so insects can perch

Wind-pollinated (anemophilous) flowers have the opposite features:

  • Small, dull petals, or none
  • No scent or nectar
  • Light, smooth, dry pollen grains that are easily carried by wind
  • Large, feathery stigmas and anthers that dangle outside the flower

Go through the options:

  • A. Brightly coloured petals: attract insects visually. ✔ (attractant)
  • B. Broad and grooved corolla: gives a landing platform and guides insects to the nectar. ✔ (attractant)
  • C. Anther with light pollen grains: light pollen is a wind-pollination adaptation. Insects don't need it, and insect-pollinated flowers have heavier, sticky or spiny pollen. ✘ (not an attractant)
  • D. Nectar: the food reward for insects. ✔ (attractant)
  • E. Sweet scent: attracts insects by smell. ✔ (attractant)

Tip: Remember "Wind = Light, Insects = Lure." Light, dry pollen belongs to wind-pollinated flowers. Colour, scent, nectar, and sticky pollen belong to insect-pollinated ones. In "EXCEPT" questions, look for the option that fits the opposite pollination type.

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