Penetrant,volvent,and glutinant are types of

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(A) $Hydra$ possesses four distinct types of nematocysts,which are specialized stinging cells used for prey capture and defense.$1$. Penetrants (Steno

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Nematocysts of $Hydra$

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(A) $Hydra$ possesses four distinct types of nematocysts,which are specialized stinging cells used for prey capture and defense.$1$. Penetrants (Stenoteles): These are the largest nematocysts and contain a barbed thread that injects toxins into the prey.$2$. Volvents (Desmonemes): These are the smallest nematocysts; they possess a short,thick,spineless thread that coils around the prey's appendages.$3$. Steroline Glutinants (Atrichous isorhizas): These are small,oval-shaped nematocysts that secrete a sticky substance to adhere to the prey.$4$. Streptoline Glutinants (Holotrichous isorhizas): These are larger,elongated nematocysts that also secrete adhesive substances.Therefore,penetrant,volvent,and glutinant are all types of nematocysts found in $Hydra$.

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