Last Updated On [03-11-2023]
Statement 1:
In many gastropods, the anus and the mantle cavity are placed anteriorly above the head.
Statement 2:
During embryonic development in many gastropods, one side of the visceral mass grows faster than the other side. This uneven growth rotates the visceral organs up to 180o in many gastropods.
a)
Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1
b)
Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1
c)
Statement 1 is True, Statement 2 is False
d)
Statement 1 is False, Statement 2 is True
Statement 1:
In many gastropods, the anus and the mantle cavity are placed anteriorly above the head.
Statement 2:
During embryonic development in many gastropods, one side of the visceral mass grows faster than the other side. This uneven growth rotates the visceral organs up to 180o in many gastropods.
a)
Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1
b)
Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1
c)
Statement 1 is True, Statement 2 is False
d)
Statement 1 is False, Statement 2 is True
Question ID - 504 :-
Statement 1:
In many gastropods, the anus and the mantle cavity are placed anteriorly above the head.
Statement 2:
During embryonic development in many gastropods, one side of the visceral mass grows faster than the other side. This uneven growth rotates the visceral organs up to 180o in many gastropods.
a)
Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1
b)
Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1
c)
Statement 1 is True, Statement 2 is False
d)
Statement 1 is False, Statement 2 is True
|
Statement 1: |
In many gastropods, the anus and the mantle cavity are placed anteriorly above the head. |
|
Statement 2: |
During embryonic development in many gastropods, one side of the visceral mass grows faster than the other side. This uneven growth rotates the visceral organs up to 180o in many gastropods. |
|
a) |
Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1 |
|
b) |
Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1 |
|
c) |
Statement 1 is True, Statement 2 is False |
|
d) |
Statement 1 is False, Statement 2 is True |
(b)
In gastropods the skin of visceral mass forms a thin delicate covering called mantle over the head. The hindgut of alimentary canal is composed of rectum and anus. The anus is located at anterior end.
During development in most gastropods due to torsion the visceral mass and the shell of embryo become spirally cailed (due to unequal growth).
Next Question :
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Statement 1: |
Animals that have an exoskeleton, lacks an endoskeleton |
|
Statement 2: |
Skeleton cells in the embryonic stage migrate to either stage and produce exoskeleton or endoskeleton but never both |
|
a) |
Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1 |
|
b) |
Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1 |
|
c) |
Statement 1 is True, Statement 2 is False |
|
d) |
Statement 1 is False, Statement 2 is True |
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