[Campbell Biology P.876] Which of the following structures is NOT a component of the mature ... | Practice Question

Which of the following structures is NOT a component of the mature female gametophyte embryo sac in angiosperms as depicted?

  • A: Antipodal cells
  • B: Synergid cells
  • C: Four megaspores
  • D: Egg cell

Explanation

In angiosperms, a single functional megaspore undergoes three mitotic divisions to form a mature female gametophyte embryo sac , which typically consists of seven cells and eight nuclei: one egg cell, two synergid cells, three antipodal cells, and a large central cell with two polar nuclei. The four megaspores are a precursor stage, with only one typically surviving to develop into the female gametophyte.