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JAMB Biology 1985 Question 32

Question 32

Reproduction in Plants

For pollen to be released in Crotalaria the insect must depress the

  1. A.wing
  2. B.keel
  3. C.standard
  4. D.antepetalous stamen
  5. E.antesepalous stamen
Show the answer and explanation

Answer: B (keel)

Explanation

In Crotalaria the stamens and stigma are hidden inside the keel petals. When an insect lands and presses the keel down, the pollen is pushed out onto it.