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Bio Biology

BiologyNEB 2082 (MCQs)

Which of the following term describes pollen tube entry into the embryo sac of ovule through micropyle during fertilization? a) Mesogamy b) Chalazogamy c) Syngamy d) Porogamy

1

Answer

· Based on the official syllabus and past papers
Updated

The correct term describing the entry of the pollen tube into the embryo sac of the ovule through the micropyle during fertilization is porogamy.

Explanation:

  • Porogamy refers to the process where the pollen tube enters the ovule through the micropyle, the small opening at the end of the ovule where the egg cell is located.
  • Chalazogamy involves entry through the chalaza (the basal part of the ovule opposite the micropyle).
  • Mesogamy refers to entry through the middle region of the ovule wall.
  • Syngamy is the fusion of male and female gametes (not related to the entry point of the pollen tube).

Thus, the correct answer is (d) Porogamy.

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