A. Chrysophyta
B. Bacillariophyceae
C. Xanthophyceae
D. Both A. and B.
Biology
Which organisms are sometimes called the ” pastures of the sea”?
A. Diatoms
B. Radiolarians
C. Dinoflagellates
D. Foraminiferans
The wax present on the body of cockroach is secreted:
A. Mucocytes
B. Leucocytes
C. Oenocytes
D. Granulocytes
The bristles on the body of the cockroach arise from……….?
A. Epidermis
B. Trichogen cell
C. Basement membrane
D. Malpighian cell
Melanin pigment in cockroach is found in……….?
A. Epicuticle
B. Exocuticle
C. Endocuticle
D. All of these
Chitin in cockroach is absent in…………?
A. Epicuticle
B. Exocuticle
C. Endocuticle
D. All of these
In man which organisms cause abscesses on the skin of arms or legs?
A. Ascaris
B. Bacteria
C. Ring worm
D. Suinea worm
In many which phylum the body of an organisms is usually divided in there regions called head, thorax and abdomen?
A. Arthropods
B. Chordata
C. Annelida
D. Echinodermata
In all arthropods,the body is covered with a chittinous cuticle which is secreted by the…………?
A. Endodermis
B. Mesophyll
C. Chitin
D. Epidermis
All insects have how many parts of legs?
A. 4
B. 2
C. 3
D. 6