Sponges Crossword Puzzle

an animal lacking a backbone
having parts or aspects that are not equal or equivalent
water flows into a sponge through cells with pores
Cells that line the interior of sponges, cells are surrounded by a collar of microvilli
fixed in one place; immobile
an animal that feeds on material (such as planktonic organisms) suspended in water
feed by straining suspended matter and food particles from water
a phylum of aquatic invertebrate animals that comprises the sponges
a change of the form or nature of a thing or person into a completely different one
structural elements found in most sponges. They provide structural support and deter predators
a large aperture in a sponge through which water is expelled
fibrous substance found in the skeleton of many sponges
cells that are found in connective tissue, but are not fixed in place and move around
a free-swimming larva in certain sponges
eject sperm and egg cells into the water, the larva settles to a suitable location on the bottom and grows into an adult sponge