Malpighian tubules of cockroach are lined by which of the following cells ?

(1) Epithelial cells

(2) Ciliated cells

(3) Ciliated and glandular cells

(4) Epithelial and glandular cells

Which of the following statements is wrong?

How many pairs of spiracles are found in cockroach?

1. 10

2. 20

3. 5

4. 25

Exoskeleton of each segment in cockroach consists 

1. Dorsal tergum and a ventral sternum

2. Dorsal sternum and a ventral tergum

3. Sternum only

4. Tergum only

Which of the following mouth part act as tongue in cockraoch?

1. Labium

2. Hypopharynx

3. Maxillae

4. Labrum