Practice Pakistan's most useful MCQs for competitive exams

They are considered to be the most primitive and are surely the first of the vertebrates?

• (A)  Frogs
• (B)  Reptiles
• (C)  Amphibinas
• (D)  Jawless fishes

Answer

Submitted By :Ali Uppal

Scolidon or dog fish belong to the group of fishes called__________?

• (A)  Cartilaginous fishes
• (B)  Bony fishes
• (C)  Running fishes
• (D)  Jawless fishes

Answer

Submitted By :Ali Uppal

Nephrostome in earthworm opens in____________?

• (A)  External space
• (B)  Internal Body cavity
• (C)  In gut
• (D)  In Bladder

Answer

Submitted By :Ali Uppal

The nephridia of earthworm open into the coelom by_________?

• (A)  Nephrostome
• (B)  Nephridiopore
• (C)  Flame cell
• (D)  Anus

Answer

Submitted By :Ali Uppal

Which one of the following is representing the group of diatoms?

• (A)  Pinnularia, Navicula, Cymbella, Melosira
• (B)  Euglenamorpha, Hedneria , Heteronema, Colacium
• (C)  Nostoc, Anabaena, Aulosira, Cylindrospermum
• (D)  Cochlodinium, Gymnodinium, Lenodinium, Peridinium

Answer

Submitted By :Ali Uppal

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