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
Coelom that develops from the archenteron as outpouching is__________?
(A) Pseudocoelom
(B) Enterocoelom
(C) Schizocoelom
(D) None of these
Of the following which one is not included in Proterostomes?
(A) Arthropods
(B) Hemichordates
(C) Annelids
(D) Molluses
Inner layers of the sponges are made up of__________?
(A) Pinacocytes
(B) Choanoderm
(C) Choanoytes
(D) Pinacoderm
Gut in pseudocoelomates is made from___________?
(A) Ectoderm
(B) Mesoderm
(C) Endoderm
(D) All of these