Invertebrates Crossword Puzzle
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QUESTIONS LIST:
- platyhelminthes: flatworms
- trochophore: ciliated larvae of molluscs.
- appendages: arthropods have jointed _ .
- acoelomates: animals that lack a body cavity.
- choanocytes: specialized cells that engulf bacteria by phagocytosis.
- nematocysts: specialized organelles of cnidocytes that function to stun and capture prey.
- diploblastic: cnidarians are _ , meaning they have two tissue layers.
- segmented: annelids are commonly known as _ worms.
- osculum: in sponges, water is drawn into the spongocoel and flows out through the _ .
- visceral: the _ mass contains most internal organs of molluscs.
- mantle: fold of tissue that secretes the shell of molluscs.
- cuticle: exoskeleton made of layers of protein and chitin.
- calcareous: echinoderms have an exoskeleton of hard _ plates.
- metamorphosis: insects undergo incomplete or complete _ .
- decapods: crustaceans such as lobsters, crabs, crayfish, and shrimp.
