A developmental stage comprised of a hollow ball of cells is the
A) blastula.
B) blastocoel.
C) gastrula.
D) neurula.
Correct Answer:
Verified
Q32: Which is NOT an extraembryonic membrane?
A)Amnion
B)Placenta
C)Yolk sac
D)Allantois
Q33: "Diploblastic" refers to _ where _.
A)fish and
Q34: The difference between schizocoelous and enterocoelus organisms
Q35: A primitive streak appears during gastrulation of
A)sea
Q36: Mosaic development in animals
A)is a type in
Q38: In nearly all metazoa,"germ layers" is a
Q39: In the human,which part of the blastocyst
Q40: In mammals,the organ of exchange between the
Q41: Animals having radial cleavage (echinoderms)also show a
Q42: The concept of _ suggested that preformed
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