embryo

In certain plants the seeds are shed before the embryo is mature. So the seed undergoes dormancy to allow the embryo to devel..

Embryo mortality and seed failure associated with embryo development are most common reasons for failure of interspecific hybridization due to incompatability. In such instances, fertilization and zygote formation may not suffer but embryo development does not ta..

The fertilised egg undergoes a regular sequence of divisions to form the embryo. The oospore divides to form a suspensor or basal cell and a terminal embryo cell. The basal cell is towards the micropyle and the terminal cell is towards the chalaza. The basal cell divides repeat..

1. BRYOPHYTA (NON VASCULAR) 2. TRACHEOPHYTA (VASCULAR) a) PTERIDOPHYTES b) GYMNOSPERMS c) ANGIOSPERMS fig. 8.24 - Major Plant Grou..

Which of these classifications of plants do not have naked embryos or spores? => Angiosperms or Bryophytes or Pteridopytes or Thallohytes..

It develops above the embryo. It consists of the trophoblast inside and mesoderm outside. Between the amnion and the embryo, there is the amniotic cavity filled with the amniotic fluid secreted by the embryo and the amnion. The amnion and the fluid filled amniotic cavi..

During germination the cells of the embryo resume metabolic activity. The stored fats, proteins and starch are digested. The insoluble food is made soluble and complex food is made simple. Assimilation of this food by the growing embryo induces growth and the seedling assumes it..

After repeated cleavages, the embryo takes the form of a solid ball of cells and looks like a mulberry. This embryonic stage is called morula (a little mulberry). The embryo is now at the 16-celled sta..

It stores the nitrogenous wastes of the embryo, so it acts as an extra embryonic kidney. In eutherian mammals it takes part in placenta formati..

After fertilization, the zygote undergoes a number of mitotic divisions and form a multicellular embryo. The primary endosperm nucleus also passes through a series of mitotic divisions and form a mass of endosperm cells which provide nourishment to the developing embryo. Based o..