Biology Mcqs

All the animals of the grade radiata are____________?

A. Diploblastic
B. Triploblastic
C. Both
D. Unicellular

The name animal is derived from the word__________?

A. Anima
B. Anemia
C. Aname
D. All of these

Aschelminthes is also known as____________?

A. Protozoans
B. Eumatazoa
C. Nematodes
D. Protoctist ancestors

Shell of egg is leathery in appearance in___________?

A. Amphibians
B. Reptiles
C. Birds
D. Prototherians

Circulatory system is open type in all of the following except:___________?

A. Arthropoda
B. Gastropoda
C. Pelecypoda
D. Cephalopoda

Aquatic arthropods respire through__________?

A. Spiracles
B. Gills
C. Book lungs
D. Both b and c

Of the following which one is non-cellular in most cases in animals?

A. Mesenchyme
B. Sclerenchyma
C. Chlorenchyma
D. Mesoderm

In some cases the blastomere can produce complete embryo the cleavage will be___________?

A. Spiral and determinate
B. Radial and indeterminate
C. Spiral and indeterminate
D. Radial and determinate

The animals in which coelom is formed due to splitting of mesocerm are known as____________?

A. Pseudocoelous
B. Schizocoelous
C. Enterocoelous
D. Emphicoelous

Of the following which one is not the characteristic of triploblasts?

A. All of them have blood vascular system
B. They may be coelomate pseudocoelomate or acoelomate
C. They are included in grade bilaterian
D. All of them have digestive system