Question

write pseudoembryo sac and its function.​

Answer 1

Question:-

• Write about pseudoembryo sac and its function.

Solution:-

The cell walls of nucellar cells remain intact until the period fertilization occurs (Fig. 2e) when the zygote begins to divide, these nucellar cells have been observed to lose their walls and organize a structure commonly referred as pseudo-embryo sac.

Functions:-

• The female gametophyte of a seed plant consisting of a thin-walled sac within the nucellus that contains the egg nucleus and other nuclei which give rise to endosperm on fertilization.

Additional information:-

Podostemaceae is a family of embryological, morphological and ecological unusual aquatic angiosperms. They occur on rocks in swift flowing streams, rapids and waterfalls in the tropics and subtropics. When the water-level falls during the dry season, the plants emerge above the water to flower and fruit. Thus, Podostemaceae and Hydrostachyaceae only survive this extreme variable seasonal aquatic condition amongst the angiosperms.