Lab 6: Poriferans, diploblasts, lophotrochozoans

Specimen description vocabulary

Blastula

hollow ball of cells formed early in embryonic development

Filter feeder

an animal that feeds by filtering organisms or organic matter from
water

Colloblasts

cells that release an adhesive to capture prey, found only in ctenophores

Chetae

bristle found on annelids

Fouling organism

an unwanted organism that grows on a man-made structure

Lophophore

a feeding structure that bears ciliated tentacles

Trochophore

an acorn shaped larvae that moves via cilia

Paralarva

the planktonic larval stage of cephalopods, closely resembles the
adult form but usually lacks some structures & may have different body proportions