Complete the following sentence by choosing the appropriate option:

Digestive juice in cockroach is secreted by a ring of blind tubules which are ______ in number.

(1) 100-150

(2) 9-10

(3) 6-8

(4) 15-20

Which among the following statements are incorrect with respect to cockroach ?

(1) It has mosaic vision with high sensitivity and less resolution.

(2) Salivary reservoir has eight highly chitinous plates called as teeth.

(3) Tracheoles carry oxygen from air to all other body parts.

(4) Blood is devoid of respiratory pigment.

Which among the following is differentiated into ileum, colon and rectum ?

(1) Caecum

(2) Foregut

(3) Midgut

(4) Hindgut

Pharynx of cockroach is

Find the incorrect match.