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Stack #1733383

Scientists believe the blank were the first animals to exist in multicellular form. sponges
the whiplike structures sticking out of the sponge is called blank direct the current of water through the sponge. flagella
three phyla of worms are segmented, round, and flat worm
the flat worm has blank digestive system opening, the blank has two one roundworm
blank are segmented worms with a well developed body system including blank, blank, and blank earthworms nervous digestive and circulatory system
scientists believe that blank were the first group of animals to live on land and the first to have blank arthropods jointed appendages
examples of crustaceans are crabs shrimp lobster
examples of arachnids are spiders ticks scorpions
animals with backbones are blank
Created by: micklepickle