Fertilization Process Lecture Quiz

Germination of pollen grains and growth of pollen tube: Pollen hydrates on the surface of the stigma. Vegetative cell forms a pollen tube. Stigmatic fluid contains nutrients which provides suitable medium for pollen grains germination. ______ & pollen tube contain cutinase enzyme which degrades the cutin of the stigma to help in penetration. Pollen content including 2 male gametes of generative cell move into the pollen tube.

Entry of ______ tube into ovule : After arriving in the ovary, the ______ tube finds its way into the ovule.

It is the process of fusion of two dissimilar reproductive units called gametes. →hydrates and germinates on the stigma by putting a pollen tube which penetrate the stigmatic tissue → grows through the style → enters Therefore, pollen grain adhere the ovary and finally → into the embryo sac to discharge the two sperms in the vicinity of the egg.

Discharge of male gametes from pollen tube. ______. Triple fusion 1) Germination of pollen grains and growth of pollen tube: Pollen hydrates on the surface of the stigma. Vegetative cell forms a pollen tube. Stigmatic fluid contains nutrients which provides suitable medium for pollen grains germination. Pollen grains & pollen tube contain cutinase enzyme which degrades the cutin of the stigma to help in penetration. Pollen content including 2 male gametes of generative cell move into the pollen tube.

→hydrates and germinates on the stigma by putting a pollen tube which penetrate the stigmatic tissue → grows through the style → enters Therefore, pollen grain adhere the ovary and finally → into the embryo sac to discharge the two sperms in the vicinity of the egg.