Shell of molluscs is derived from
foot
mantle
ctenidia
placoid
B.
mantle
Molluscs are the soft bodied, unsegmented animals covered by a shell. Mantle is the dorsal body wall which covers the organs of digestion, reproduction and movement. In between the shell and body wall is a covering called mantle, which secretes the shell.
A man of 'A' blood group marries a woman of 'AB' blood group. Which type of progeny would indicate that man is heterozygous?
O
B
A
AB
Indian rhinoceros are protected in
Gir forest
Kaziranga National Park
Bandipur National Park
Ranthambore National Park