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- Help me understand! In which one of the following the genus name, its two charcters and its phylum are not correctly matched, whereas the remaining three are correct Genus name Two Characters Phylum
In which one of the following the genus name, its two charcters and its phylum are not correctly matched, whereas the remaining three are correct
|
Genus name |
Two Characters |
Phylum |
|---|
- Option 1)
Pila
(a)
Body Semented
Mollusca
(b)
Mouth with Radual
- Option 2)
Asterias
(a)
Spiny skinned
Echinoermata
(b)
Water vascular system
- Option 3)
Sycon
(a)
Pore bearing
Porifera
(b)
Canal system
- Option 4)
Periplaneta
(a)
Jointed appendages
Arthropoda
(b)
Chitinous exoskeleton
Answers (1)
Body structure of Mollusca -
Body is covered by calcareous shell and is unsegmented with a distinct head, muscular foot and visceral hump. Mouth contains rasping organ called radula.
- wherein
A soft and spongy skin layer called mantle forms the skin. Mouth cavity is present between hump and mantle which contains feather like gills.
Molluscs are bilaterally symmetrical, triploblastic, coelomate, soft-bodied animals. Thier soft body is covered by a calcareous
shell and is
Option 1)
|
Pila |
(a) |
Body Semented |
Mollusca |
|
(b) |
Mouth with Radual |
This is correct option
Option 2)
|
Asterias |
(a) |
Spiny skinned |
Echinoermata |
|
(b) |
Water vascular system |
This is incorrect option
Option 3)
|
Sycon |
(a) |
Pore bearing |
Porifera |
|
(b) |
Canal system |
This is incorrect option
Option 4)
|
Periplaneta |
(a) |
Jointed appendages |
Arthropoda |
|
(b) |
Chitinous exoskeleton |
This is incorrect option
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