Mostly marine animals with radial symmetry, two germ layers, and stinging cells are called ______, which include jellyfishes, hydras, corals, and sea anemones.Multiple choice question.spongesmolluskscnidariansannelids

Animals called ______ have radial symmetry, a gastrovascular cavity, and a body composed of a layer of ectoderm and a layer of endoderm.Multiple choice question.spongescnidariansechinodermsmollusks

All animals, except sponges, have cells organized into groups with similar form and function called Blank______.Multiple choice question.layersbody plansorganstissues

Sponges …a. have larvae which are motile and move via the motion of cilia.b. are the simplest diploblastic animals.c. have a nerve net but not a central nervous system.d. have feeding cells called dinoflagellates.e. reproduce asexually.6. Healthy corals are brightly coloured because they …a. secrete colourful pigments to attract mates.b. host symbionts with colourful photosynthetic pigments.c. build their skeletons from colourful minerals.d. secrete colourful pigments to protect themselves from ultraviolet light.e. secrete colorful pigments to attract prey species.7. Which of the following is a major disadvantage of exoskeletons?a. Exoskeletons can be easily punctured.b. An exoskeleton provides some support.c. An exoskeleton grows faster than the animal.d. An exoskeleton does not grow as the animal grows.e. An exoskeleton tastes good to predators.8. Which of the following combinations correctly matches a phylum to its description?a. Echinodermata – bilateral symmetry as a larva, water vascular systemb. Nematoda – segmented worms, closed circulatory systemc. Cnidaria – flatworms, gastrovascular cavity, acoelomated. Platyhelminthes – radial symmetry, polyp and medusa body formse. Arthropoda – nonsegmented body, hard exoskeleton, and visceral mass9. Which of the following is a characteristic of all chordates at some point during their lifecycle?a. Jawsb. Post-anal tailc. Four-chambered heartd. Vertebraee. Limbs

Animals with deuterostome development, bilateral symmetry as larvae, and five-part radial symmetry as adults are calledMultiple choice question.sponges.echinoderms.mollusks.cnidarians.

Stinging cells embedded into the tentacles of cnidarians that contain tiny harpoons are calledMultiple choice question.radulae.cnidocytes.choanocytes.polyps.