Biology Mcqs

Diatoms belong to___________?

• (A)  Chrysophyta
• (B)  Bacillariophyceae
• (C)  Xanthophyceae
• (D)  Both

Answer

Submitted By :Ali Uppal

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

• (A)  Diatoms
• (B)  Radiolarians
• (C)  Dinoflagellates
• (D)  Foraminiferans

Answer

Submitted By :Ali Uppal

The wax present on the body of cockroach is secreted:

• (A)  Mucocytes
• (B)  Leucocytes
• (C)  Oenocytes
• (D)  Granulocytes

Answer

Submitted By :Ali Uppal

The bristles on the body of the cockroach arise from__________?

• (A)  Epidermis
• (B)  Trichogen cell
• (C)  Basement membrane
• (D)  Malpighian cell

Answer

Submitted By :Ali Uppal

Melanin pigment in cockroach is found in__________?

• (A)  Epicuticle
• (B)  Exocuticle
• (C)  Endocuticle
• (D)  All of these

Answer

Submitted By :Ali Uppal

Chitin in cockroach is absent in____________?

• (A)  Epicuticle
• (B)  Exocuticle
• (C)  Endocuticle
• (D)  All of these

Answer

Submitted By :Ali Uppal

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

• (A)  Ascaris
• (B)  Bacteria
• (C)  Ring worm
• (D)  Suinea worm

Answer

Submitted By :Ali Uppal

In all arthropods,the body is covered with a chittinous cuticle which is secreted by the____________?

• (A)  Endodermis
• (B)  Mesophyll
• (C)  Chitin
• (D)  Epidermis

Answer

Submitted By :Ali Uppal

The chloroplasts of diatoms and chrysophycean algae do not possess____________?

• (A)  Chloryphyllpigments
• (B)  Enzymes for photolysis
• (C)  Defined grana and stroma
• (D)  Carotenes with chlorophylls

Answer

Submitted By :Ali Uppal

Diatom frustule/ shell is made of_____________?

• (A)  Silica
• (B)  Calcium carbonate
• (C)  Manesium carbonate
• (D)  Both

Answer

Submitted By :Ali Uppal