Placenta is formed from
Maternal part only
Embryonic part only
Maternal and foetal portions both
None of the above
(c)Placenta is formed by interlocking of both foetal as well as maternal tissue.
Proctodaeum in rabbit is
The nerve cells, brain and spinal cord or central nervous system develops from embryonic
The yolk plug of gastrula represents in the later stage its
The undifferentiated primordial germ cells are larger in size and their chromatin rich nuclei are distinct in
In early haemopoietic tissue of embryo, there is
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