In snails, the hard calcareous shells are secreted by the...
In snails, the hard calcareous shells are secreted by the
radula
ctenidium
pneumostome
mantle
Correct answer is D
No explanation has been provided for this answer.
The kind of teeth used for tearing food materials is the ...
High relative humidity will be expected in zones ...
The vertebra illustrated is ...
The difference in structure, morphological and behavior of plant and animal is called ...
Mineral salts can be absorbed into the roots by ...
ln mammals, fertilization takes place in the ...
One of the structural adaptations of mammals for movement on land is the development of the ...