Embryo sac is to ovule _____________ is to another .

Options

A. stamen
B. filament
C. pollen grain
D. androecium

Answer

C

Explanation

A typical carpel consists of ovary which can have many ovules. Each ovule has an embryo sac. Which in turn has a single egg cell. Similarly, in majority of angiosperms each stamen consists of a bilobed anther, which in turn has two pollen sacs in lobe, consisting of pollen grains.