Author: Study Clue

In a sponge, water current is considered a “functional substitute” for many organ systems because the same flow simultaneously supports

A sponge increases pumping efficiency mainly because choanocyte flagella create a one-way current from entry pores to the A Mesohyl

In sponges, the internal canal design mainly increases efficiency by maximizing contact between water and A Muscle layers B Nerve

In Porifera, the key reason water flow is continuous is to support feeding, respiration, and waste removal together A Muscle

Which statement best describes adult sponges in Porifera A Sessile filter feeders B Free-swimming predators C Segmented coelomates D Active

The structure that allows Euglena to change body shape without a true wall is A Silica frustule B Pellicle strips

A feature proving Protista are eukaryotic is presence of A No organelles B No DNA C True nucleus D No

In Amoeba, the temporary “false feet” used for movement and feeding are A Flagella threads B Cilia rows C Pseudopodia

In protists, locomotory organelles are mainly used for A Protein folding B DNA storage C Cell wall formation D Movement

– Protista mainly includes organisms that are mostly A Multicellular prokaryotes B Colonial bacteria only C Unicellular eukaryotes D Multicellular