Biology MCQs

1496 MCQs  — Everyday Science MCQs  (Page 112 of 150)

The system well developed in the acoelomate is___________?
A. Excretory system
B. Nervous system
C. Transport system
D. All of these
In acoelomates gut is ________ in origin.
A. Ectodermal
B. Endodermal
C. Mesodermal
D. None of these
Venus flower basket is also known as___________?
A. Sycon
B. Euplectella
C. Leucoselenia
D. Spongilla
The internal buds are known as__________?
A. Spicules
B. Choanocytes
C. Gemmules
D. None of these
Aschelminthes is also known as____________?
A. Protozoans
B. Eumatazoa
C. Nematodes
D. Protoctist ancestors
All the animals of the grade radiata are____________?
A. Diploblastic
B. Triploblastic
C. Both
D. Unicellular
The fate of each blastomere is foretold. The cleavage will be as____________?
A. Spiral and indeterminate
B. Radial and indeterminate
C. Radial and indeterminate
D. Spiral and determinate
Aquatic arthropods respire through__________?
A. Spiracles
B. Gills
C. Book lungs
D. Both b and c