What name is given to the food-trapping cells of sponges?

1 of 20 What name is given to the food-trapping cells of sponges? Phagocytes Amoebocytes Cnidocytes Choanocytes 2 of 20 All animals are prokaryotic. are heterotrophic. have cell walls made of chitin. obtain food by absorption. 3 of 20 Features unique to mammals include the presence of hair. extended parental care of the young. being endotherms. having no egg-laying members. 4 of 20 Which of the following levels of structure encompasses all the others? Tissue Cell Organ Organism 5 of 20 Which of the following animals does not have a body cavity? Ant Mouse Flatworm Clam 6 of 20 Sharks are a type of Tunicate. Cartilaginous fish. Bony fish. Lungfish. 7 of 20 The water vascular system of a sea star functions in movement of the tube feet. circulation of nutrients around the body. pumping water for swimming movements. buoyancy 8 of 20 Neurons are specialized cells characteristic of muscle tissue. connective tissue. epithelial tissue. nervous tissue. 9 of 20 A(n) ______ is an example of an invertebrate chordate. snake echinoderm lancelet fish 10 of 20 Animals probably evolved from protists. How do animals differ from these protist ancestors? Animals are eukaryotic. Animals have more specialized cells. Animals are heterotrophic. Animals are able to reproduce. 11 of 20 Homeostasis is the exchange of materials with the surrounding environment. the idea that all vertebrates are built in a similar way. the correlation of structure and function. maintaining a relatively constant internal environment. 12 of 20 Unique features of vertebrates include the presence of a(n) skull and backbone notochord endoskeleton pharyngeal slit 13 of 20 A marine biologist dredged up a small animal from the ocean floor. It was uniformly segmented, with short, stiff appendages and soft, flexible skin. It had a complete digestive system and a closed circulatory system but no skeleton. Based on the description, this animal sounds most like a(n) lancelet. crustacean. annelid. mollusk. 14 of 20 The feature present in reptiles and absent in amphibians that freed reptiles from the dependence on water for reproduction is parental care of eggs. metamorphosis. the lateral line system. the amniotic egg. 15 of 20 A change in the body often triggers a response that counteracts the change. This kind of response is known as negative feedback. empowerment. cause and effect. positive feedback. 16 of 20 A _____ is a chordate, but not a vertebrate. squid tunicate shark frog 17 of 20 Pill bugs" or "sow bugs", often found under rocks and logs in moist places, have the ability to roll up into a ball when disturbed. Sow bugs are really crustaceans, not insects. Therefore, sow bugs do not have an exoskeleton. gills. three pairs of legs. antennae. 18 of 20 Which of the following tissues produces voluntary body movements? Smooth muscle Simple cuboidal epithelium Cardiac muscle Skeletal muscle 19 of 20 Which of the following are listed in the correct hierarchal order? System-tissue-organ Cell-tissue-organ Organ-tissue-system Tissue-cell-organ 20 of 20 Which of the following animals displays radial symmetry? A worm A sea anemone A fish A lobster