The uppermost part of androecium containing pollen sacs is called ___ .
Exine and intine are the parts of (a) Embryo sac (b) Pollen grain (c) Stigma (d) Seed
Fill in the blanks with suitable words. (a) Transference of pollen grains from anthers to stigma of the same flower is called ___ (b) Different timings for maturation of gynoecium and androecium, is called ___ (c) ___ is a water-pollinated flower.