Q.2 Embryo sac is to ovule as ......... is to an anther.
1. stamen
2. filament
3. pollen grain
4. androecium
(c) The pollen grains represent the male gametophytes. As the anthers mature and dehydrate, the microspores dissociate from each other and develop into pollen grains. So, embryo sac is to ovule as pollen grains is to an anther.
