Which one of the following statement is correct
Albumen covering eggs of frog swells and forms protective jelly after coming in contact with water
Fertilization in rabbit is helped by hyaluronidase which is present in eggs
During fertilization in rabbit the entire sperm including tail enters egg
In case of toad, fertilization takes place in moist soil
Endometrium is lining of
The mother germ cells are transformed into a mature follicle through series of steps. Provide the missing steps in the blank boxes.
$\boxed{{\text{Oogonia}}}$ $\to $ $\boxed{\text{A}}$ $\to $ $\boxed{{\text{Primary follicle}}}$ $\to $ $\boxed{\text{B}}$ $\to $$\boxed{\text{C}}$ $\to $ $\boxed{{\text{Mature or Graafian follicle}}}$
The concept that organiser is essential for embryonic development was given by or For the ‘Theory of organiser’, Nobel prize was given to
The amnion and chorion consist of which type of composition
Cledoic egg is an adaptation to