Biology MCQs

1496 MCQs  — Everyday Science MCQs  (Page 111 of 150)

The skeleton of sponges is made up of___________?
A. Calcium
B. Silica
C. Both of these
D. None of these
Inner layers of the sponges are made up of__________?
A. Pinacocytes
B. Choanoderm
C. Choanoytes
D. Pinacoderm
Coelom that develops from the archenteron as outpouching is__________?
A. Pseudocoelom
B. Enterocoelom
C. Schizocoelom
D. None of these
In most triploblasts after embryonic development the three layers are represented as___________?
A. Separate layers of cells
B. Structures formed from them
C. Structures associated with them
D. Their functions in body
Gut in pseudocoelomates is made from___________?
A. Ectoderm
B. Mesoderm
C. Endoderm
D. All of these
Sperms are _________ in origin.
A. Ectodermal
B. Mesodermal
C. Endodermal
D. None of these