Of the following which one is not included in Proterostomes?
A. Arthropods
B. Hemichordates
C. Annelids
D. Molluses
Biology Mcqs
Inner layers of the sponges are made up of__________?
Inner layers of the sponges are made up of__________?
A. acocytes
B. Choanoderm
C. Choanoytes
D. acoderm
Sperms are _________ in origin.
Sperms are _________ in origin.
A. Ectodermal
B. Mesodermal
C. Endodermal
D. None of these
Gut in pseudocoelomates is made from___________?
Gut in pseudocoelomates is made from___________?
A. Ectoderm
B. Mesoderm
C. Endoderm
D. All of these
The skeleton of the sponges is in the form of variously shaped needle like structures called___________?
The skeleton of the sponges is in the form of variously shaped needle like structures called___________?
A. Stripules
B. Spicules
C. Brails
D. Ses
The internal buds are known as__________?
The internal buds are known as__________?
A. Spicules
B. Choanocytes
C. Gemmules
D. None of these
Venus flower basket is also known as___________?
Venus flower basket is also known as___________?
A. Sycon
B. Euplectella
C. Leucoselenia
D. Spongilla
In acoelomates gut is ________ in origin.
In acoelomates gut is ________ in origin.
A. Ectodermal
B. Endodermal
C. Mesodermal
D. None of these
The system well developed in the acoelomate is___________?
The system well developed in the acoelomate is___________?
A. Excretory system
B. Nervous system
C. Transport system
D. All of these
The fate of each blastomere is foretold. The cleavage will be as____________?
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