Which of the following statements is true for | vedclass

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(C) Let us analyze the characteristics of the given organisms:$1$. $Spongilla$ (Freshwater sponge): Phylum $Porifera$,asymmetrical,possesses choanocyt

Vedclass · Accepted Answer

$Spongilla$ has specialized collar cells.

Vedclass · Answer

(C) Let us analyze the characteristics of the given organisms:$1$. $Spongilla$ (Freshwater sponge): Phylum $Porifera$,asymmetrical,possesses choanocytes (collar cells).$2$. $Leech$ $(Hirudinaria)$: Phylum $Annelida$,bilaterally symmetrical,hermaphrodite.$3$. $Dolphin$: Class $Mammalia$,bilaterally symmetrical,homeothermic.$4$. $Penguin$: Class $Aves$,bilaterally symmetrical,homeothermic.Evaluating the options:- Option $A$: $Penguin$ and $Dolphin$ are homeothermic (warm-blooded),while $Spongilla$ and $Leech$ are poikilothermic (cold-blooded). This statement is incorrect.- Option $B$: $Spongilla$ and $Leech$ are primarily freshwater,while $Dolphin$ and $Penguin$ are marine. This statement is incorrect.- Option $C$: $Spongilla$ is a sponge and possesses choanocytes (collar cells),but this is not true for the other three. This statement is incorrect.- Option $D$: $Spongilla$ is asymmetrical,not bilaterally symmetrical. This statement is incorrect.Correction: Upon reviewing the provided options,none of the statements are true for all four organisms. However,if the question implies identifying a unique feature of one,$C$ is the only biologically accurate statement regarding $Spongilla$ specifically. Given the standard nature of such questions,if this were a multiple-choice question where one must be selected,there is an error in the question's premise. Assuming the question asks for a true statement about one of them,$C$ is the correct choice.

Characteristic	Cyclostomata	Chondrichthyes	Osteichthyes
$(i)$ Habitat	Marine	Marine	Marine,Fresh Water
(ii) Mouth	Sucking mouth	Ventral mouth	Terminal mouth
(iii) Gill Slits	$6-15$ Pairs	$5-7$ Pairs	$4$ Pairs
(iv) Scales	Absent	Placoid	Cycloid/Ctenoid
$(v)$ Fins	Unpaired	Paired	Paired

Which of the following statements is true for all four: $Spongilla$,$Leech$,$Dolphin$,and $Penguin$?

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Statement $X$: All chordates are not vertebrates.
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