Where does final digestion take place in frogs?

In which of the following segments are the blood glands of an earthworm present?

Which of these pairs of abdominal segments are a part of brood pouch of female cockroach?

The first pair of wings of cockroach arises from ___

What is meant by a tissue?

What does the question mark represent in the following figure?

Which of these is not true about hepatic caeca in cockroach?

The simple epithelium consists of two or more cell layers and has a protective function.