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How does the megaspore mother cell develop into 7-celled, 8 nucleate embryo sac in an angiosperm? Draw a labeled diagram of a mature embryo sac.
The trophoblast cells in contact with embryonal knob are called _______ .
(A) Inner mass cells
(C) Amniogenic cells
(D) Cells of Rauber
Erythroblastosis foetalis is caused when mother is ______.
(b) With antibody ‘A’
(d) With antibody ‘B’