Question

With a neat labeled diagram describe the parts of a mature angiosperm embryosac. Mention the role of synergids.

Answer 1

Draw the diagram of a mature embryo sac and show its 8-nucleate, 7-celled nature. Show the following parts: antipodals, synergids, egg, central cell, polar nuclei. In the diagram given below, show the path of a pollen tube from the pollen on the stigma into the embryo sac. ... Embryo sac is to ovule as is to an anther.

Answer 2

HLO MATE HERE IS UR ANSWER.

⭐. The mature angiosperm embryosac has three parts.

• Egg appartus.
• Central cell.
• Antipodals.

❤. EGG APPARATUS ❤

⭐. Three cells grouped together at tye micropylar end constitute the egg apparatus.

⭐. They are two synergids and one egg cell.

⭐. The synergids with special cellular thickenings at the micropylar tip is called filiform apparatus.

⭐. The middle largest cell is called egg or oospore.

❤. CENTRAL CELL ❤

⭐. It is the largest cell of embryosac.

⭐. It has two polar nuclei which fuses to form a single diploid secondary nucleus

❤. ANTIPODALS ❤

⭐. Three cell present at the chalazal end of embryosac are called antipodals.

⭐. These are smallest cells of embryosac.

⭐. They degenerate before or after fertilisation.

⭐. They are considered as vegetative cells of embryosac.

❤. ROLE OF SYNERGIDS ❤

⭐. Synergids , nourish female gametophyte nutrients from surrounding nucellus.

⭐. They help in the absorption of nutrients from the nucellus into embryosac.

⭐. They play an important role in guiding the pollen tube into Egg cell.