OESOPHAGUS STOMACH
ECHINODERMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Trap food using mucus in their ciliated groove
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Locate food using a pair of eyespots
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Reverse their water intake to attract prey
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Open shellfish with powerful suction cups
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Detailed explanation-1: -Nearly all tunicates are suspension feeders, capturing planktonic particles by filtering seawater through their bodies. Tunicates obtain their food by the ciliary movement of wheel organ.
Detailed explanation-2: -Filter feeding is a common strategy among marine plankton for collecting small food particles from a suspension. Pelagic tunicates in the class Thaliacea, order Salpida, have the highest per-individual filtration rates of all marine zooplankton filter feeders (1).
Detailed explanation-3: -Amphioxus (Branchiostoma) obtains food by filtering the stream of waters that enters the pharyngeal cavity. The wheel organ produces a vortex. The buccal cirri become curved to form a sieve to prevent the entry of large particles.
Detailed explanation-4: -Adult tunicates are simple organisms. They are basically a barrel-shaped sack with two openings or siphons that water passes through. They draw water into their body through one siphon, filter out food like plankton, and expel the remaining water out of the other siphon.