Question

In which one of the following plants is the embryo sac devoid of the synergids?

• A. Oenothera sp.
• B. Opunitia sp.
• C. Plumbago sp.
• D. Najas sp.

Answer 1

The correct option is C Plumbago sp.

The synergid cells are located in the female gametophyte and are essential for angiosperm reproduction. The synergid cells produce an attractant that guides the pollen tube to the female gametophyte and likely contain factors that control arrest of pollen tube growth, pollen tube discharge, and gamete fusion. But sometimes female gametophytes are devoid of synergids as in Plumbago.

So, the correct option is C.