This printable crossword puzzle on the topic of Ecology & Evolution has 10 clues. Answers range from 5 to 12 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
central section that holds and protectes the organs
what do gastropodoa and bivalvia have in common
what layer of tissue surrounds the true body cavity
maintains the flow of water through the body of a spong
thonguelike organ used to drill
internal buds
body wall of a sponge in which water leaves the body cavity
mollusk larva
A mollusk that has two shells held together
the inner and outer layer of sponge cells