Cockroaches are ____

Which of the following represent the intercellular matrix of a bone?

Which of these structures protects the eyes of the frog in water?

What is the name of the tissue given in the following figure?

Some of the squamous epithelial cells get specialised for the secretion and are called the glandular epithelium.

Which of these is not a division of hindgut in cockroach?

What does the question mark represent in the following figure?

Frogs exhibit sexual dimorphism.