The wax present on the body of cockroach is secreted:

A. Mucocytes
B. Leucocytes
C. Oenocytes
D. Granulocytes

Which organisms are sometimes called the ” pastures of the sea”?

A. Diatoms
B. Radiolarians
C. Dinoflagellates
D. Foraminiferans

Diatoms belong to___________?

A. Chrysophyta
B. Bacillariophyceae
C. Xanthophyceae
D. Both a. and b.

Chitin in cockroach is absent in____________?

A. Epicuticle
B. Exocuticle
C. Endocuticle
D. All of these

Melanin pigment in cockroach is found in__________?

A. Epicuticle
B. Exocuticle
C. Endocuticle
D. All of these

The bristles on the body of the cockroach arise from__________?

A. Epidermis
B. Trichogen cell
C. Basement membrane
D. Malpighian cell

In man which organisms cause abscesses on the skin of arms or legs?

A. Ascaris
B. Bacteria
C. Ring worm
D. Suinea worm

Snails belong to__________?

A. Cephalopodsxc
B. Gastropods
C. Bivalves
D. Athropods

In mouth cavity of many molluscs there is a rasping tongue like structure_________provided with many horny teeth.

A. Ligule
B. Radula
C. Mantle
D. Muscle

All insects have how many parts of legs?

A. 4
B. 2
C. 3
D. 6