Question 1 (2 points) question 1 unsaved which of these is not a characteristic of all animals? question 1 options: cells have a nucleus multicelled have hair eat other organisms save question 2 (2 points) question 2 unsaved sponges are in the phylum porifera. what does phylum porifera mean? question 2 options: having no pores covered in pores pore negative pore asymetrical save question 3 (2 points) question 3 unsaved true or false sponges are known as filter feeders, bringing water in through their pores, catching food and oxygen on collar cells, then pushing the water out through it osculum. question 3 options: true false save question 4 (2 points) question 4 unsaved tapeworms can be parasitic. how is a tapeworm considered a parasite? question 4 options: it lives inside another animal it can harm its host it steals nutrients from its host all of the above save question 5 (2 points) question 5 unsaved what does the term invertebrate mean? question 5 options: having a backbone not having a backbone lacking a nucleus it means they are small save question 6 (2 points) question 6 unsaved jellyfish, sea anemones, hydras, and corals all fall under this phylum of animal. question 6 options: mollusks planarians cnidarians arthropods save question 7 (2 points) question 7 unsaved these animals are know for their soft bodies, muscular foot, and being the first organisms to have several simple organ systems. question 7 options: mollusks cnidarians arthropods mammals save question 8 (2 points) question 8 unsaved which group of animals share the characteristics below? bilateral symetry segmented bodies hard exoskeleton jointed legs many limbs question 8 options: mollusks cnidarians arthropods worms save question 9 (2 points) question 9 unsaved which is not a characteristic of cnidarians? question 9 options: two stage life cycle stinging cells advanced organ systems invertebrates save question 10 (2 points) question 10 unsaved what are the 5 classes of arthropods? question 10 options: bi-valves, mollusks, and arachnids crustacean, arachnid, centipede, millipede, and insect porifera, echinoderm, anthropod, cnidaria, and mollusk save