Answer in one word or one line.            

(iv) How many segments are present in the abdomen of cockroach?                                     

Distinguish between the following

(a) Prostomium and peristomium

Distinguish between the following

(b) Septal nephridium and pharyngeal nephridium

What are the following and where do you find them in animal body

(a) Chondriocytes

(b) Axons

What are the following and where do you find them in animal body

(c) Ciliated epithelium

Distinguish between

(a) Simple epithelium and compound epithelium.

Distinguish between

(b) Cardiac muscle and striated muscle

Distinguish between

(c) Dense regular and dense irregular connective tissues