(D) In the given organisms:$1$. $Spongilla$ belongs to the phylum $Porifera$,which possesses special collar cells called $Choanocytes$.$2$. $Leech$ be

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$Spongilla$ has special collar cells called $Choanocytes$,which are not found in the others.

(D) In the given organisms:$1$. $Spongilla$ belongs to the phylum $Porifera$,which possesses special collar cells called $Choanocytes$.$2$. $Leech$ belongs to the phylum $Annelida$.$3$. $Dolphin$ and $Penguin$ belong to the classes $Mammalia$ and $Aves$ respectively.$Choanocytes$ are exclusively found in members of the phylum $Porifera$. Therefore,option $D$ is correct.

Class 11 Biology Animal Kingdom Mix Examples - Animal Kingdom

Medium

Which statement is true for $Spongilla$,$Leech$,$Dolphin$,and $Penguin$?

A
All possess bilateral symmetry.
B
$Penguin$ is homeothermic while the others are poikilothermic.
C
$Leech$ is a freshwater annelid,while all others are marine.
D
$Spongilla$ has special collar cells called $Choanocytes$,which are not found in the others.