Feeding and Adaptations of Polychaetes

This video explores the diverse feeding strategies of polychaetes, a class within the phylum Annelida. It covers hunting carnivores with specialized jaws, deposit feeders that ingest sediment, and suspension feeders like fan worms. The video also discusses parasitic and commensal relationships involving polychaetes.

What sensory adaptation helps polychaetes in hunting?

• Vibrating tentacles

• Antennae

• Color-changing skin

• Multiple pairs of eyes

How do non-selective deposit feeders obtain their nutrients?

• By photosynthesis

• By capturing prey with jaws

• By ingesting any sediment

• By filtering water

What is a key characteristic of selective deposit feeders?

• They only ingest large particles

• They use biofilm to capture prey

• They prefer small particles with high surface area

• They rely on symbiotic relationships

What unique feature do spaghetti worms use for feeding?

• Sharp teeth

• Groove tentacles

• Bioluminescence

• Electric shocks

What structure do fan worms use to capture food particles?

• Radials

• Fins

• Gills

• Tentacles

What is the function of the ax per coulomb in fan worms?

• To aid in locomotion

• To store food

• To protect the burrow

• To capture prey

What is a common relationship between scale worms and sea cucumbers?

• Predation

• Mutualism

• Parasitism

• Commensalism

How do some polychaetes use mucus bubbles for feeding?

• To protect themselves from predators

• To build their burrows

• To communicate with other worms

• To trap prey in water

What is the role of the modified setae in scale worms?

• To aid in swimming

• To form protective scales

• To store nutrients

• To capture prey

What is a unique feature of the hermit crab's relationship with annelid worms?

• The worm helps the crab find mates

• The worm provides food for the crab

• The worm uses the crab's shell for protection

• The crab cleans the worm