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Double fertilization involves:

  1. A
    fertilization of the egg by two male gametes
  2. B
    fertilization of two eggs in the same embryo sac by two sperms brought by one pollen tube
  3. C
    fertilization of the egg and the central cell by two sperms brought by different pollen tubes
  4. D
    fertilization of the egg and the central cell by two sperms brought by the same pollen tube.

Solution & Step-by-step Explanation

Double fertilization is a characteristic feature of angiosperms. It involves one pollen tube bringing two male gametes (sperms); one fertilizes the egg cell to form a zygote, and the second fertilizes the two polar nuclei (central cell) to form the triploid primary endosperm nucleus.

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Double fertilization involves:
A
fertilization of the egg by two male gametes
B
fertilization of two eggs in the same embryo sac by two sperms brought by one pollen tube
C
fertilization of the egg and the central cell by two sperms brought by different pollen tubes
D
fertilization of the egg and the central cell by two sperms brought by the same pollen tube.

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