Question

question 23
1 pts
which cell type helps cnidarian feed and contains a poison - tipped barb that can paralyze prey?
○ choanocytes
○ ocelli
○ statoliths
○ cnidocyte

Explanation:

• Choanocytes are cells found in sponges and are involved in filter - feeding by creating water currents and trapping food particles. They are not related to cnidarians' feeding mechanism with poison - tipped barbs.
• Ocelli are simple eyes or light - sensing organs. They are used for detecting light intensity and direction, not for feeding with a poison - tipped barb.
• Statoliths are structures related to balance and orientation in some animals. They have no role in feeding with a paralyzing barb.
• Cnidocytes are specialized cells in cnidarians. Each cnidocyte contains a nematocyst (a capsule with a coiled, poison - tipped barb). When triggered (e.g., by contact with prey), the nematocyst is discharged, and the barb can inject venom to paralyze the prey, which helps the cnidarian in feeding.

Answer:

cnidocyte