771. Both radial and bilateral symmetry is found in the phylum____________?
A. Protozoa
B. Porifera
C. Echinodermata
D. None of these

772. 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

773. The animals in which coelom is formed due to splitting of mesocerm are known as____________?
A. Pseudocoelous
B. Schizocoelous
C. Enterocoelous
D. Emphicoelous

774. 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

775. Of the following which one is non-cellular in most cases in animals?
A. Mesenchyme
B. Sclerenchyma
C. Chlorenchyma
D. Mesoderm

776. Aquatic arthropods respire through__________?
A. Spiracles
B. Gills
C. Book lungs
D. Both b and c

777. Circulatory system is open type in all of the following except:___________?
A. Arthropoda
B. Gastropoda
C. Pelecypoda
D. Cephalopoda

778. Shell of egg is leathery in appearance in___________?
A. Amphibians
B. Reptiles
C. Birds
D. Prototherians

779. Aschelminthes is also known as____________?
A. Protozoans
B. Eumatazoa
C. Nematodes
D. Protoctist ancestors

780. The name animal is derived from the word__________?
A. Anima
B. Anemia
C. Aname
D. All of these