WAEC - Biology (2024 - No. 17)
The diagram above is an illustration of two plants P and Q. Arrows I, II and III illustrate the transfer of pollen grains among flowers of plants P and Q. Studly it and answer questions 17 and 18.
The types of pollination illustrated as I,Il and III, respectively are
cross, self and cross
self, self and cross
self, cross and self
self, cross and cross
Explanation
I - Self pollination
II - Self pollination
III - Cross pollination
Self-pollination occurs when pollen grains are transferred from anther to the stigma within the same flower(as seen in I) or plant(as seen in II), while cross-pollination occurs when pollen grains are transferred from the anther of a plant to the stigma of another plant of the same species(as seen in III).
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