Which one of the following is not a characteristic feature of frog?
The skin is moist and slimy
Each of the fore limbs and hind limbs end in five digits
Hepatic portal and renal portal systems are present
Skin, buccal cavity and lungs are the respiratory organs
The figure given below shows the head region of cockroach. Identify $A$ to $F$.
In cockroach, which of the following is the principal motor centre?
Describe the structure of oothecae in cockroach.
In cockroach, identify the parts of the foregut in correct sequence
Mark the odd one in each series:
Maxilla; mandible; labrum; antennae