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Earthworms have a(n) ____.
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- Match each structure with its descriptions. ____ radula a. internal skeleton ____ exoskeleton b. external skeleton ____ endoskeleton c. stinging cell of cnidarians ____ cnidocyte d. excretory organ of insects ____ compound eye e. mollusk feeding device ____ tube foot f. larva of annelid or mollusk ____ trochophore g. has many lenses ____ Malpighian h. moves an echinoderm tubule i. digests a planarian’s food ____ gastrovascular cavityA comb jelly and a jellyfish differ from each other because a ctenophore ___A ___ , while a cnidarian ___B_____. Choices of A: is radially symmetrical has a complete digestive tract is bilaterally symmetrical has an incomplete digestive tract is triploblastic is diploblastic Choices of B: is radially symmetrical has a complete digestive tract is bilaterally symmetrical has an incomplete digestive tract is triploblastic is diploblasticAll arthropods 1. Undergo complete metamorphosis 2. Have jointed appendages 3. Molt 4. Have segmented bodies 5. Have an exoskeleton (1,2 and 4/ 3 and 5/ 2,3,4 and 5/ 1,4 and 5)?
- Figure 15.3 Which of the following statements is false? a. Eumetazoa have specialized tissues and Parazoa do not. b. Both acoelomates and pseudocoelomates have a body cavity. c. Chordates are more closely related to echinoderms than to rotifers according to the figure. d. Some animals have radial symmetry, and some animals have bilateral symmetry.Match the organisms with their descriptions. ___ echinoderms a. stinging cells in tentacles ___ sponges b. simplest organ systems ___ cnidarians c. no tissues, filters out food ___ flatworms d. jointed exoskeleton ___ roundworms e. mantle over body mass ___ annelids f. segmented worms ___ arthropods g. spiny skinned deuterostomes ___ mollusks h. complete gut, pseudocoelomScales of modern teleosts differ from the ancestral state in that they _____. are thicker and provide better protection are thinner and more flexible
- An exoskeleton: O Is necessary for terrestrial life O Is common in Phylum Echinodermata O Is always made of chitin O Requires that the animal shed its skeleton numerous times as it grows O Allows animals to grow to very large sizes « Previous Next Not saved Submit Quiz earch 75°F Sunny PrtSc F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 * %23 3 7 W R Y U G H J K L V V * CO 44Compared to other actinopterygians, teleosts _____. reach sexual maturity later in life and live much longer have greater jaw mobility have fewer chromosomesIm mollusks. torsion refers to: O the winding of the shell and the visceral mas the ability to draw the head into the shell an anterior-trending twisting of the digestive tract the retraction of the radula into the pharyngeal cavity posterior-trending spiraling of the nerve chord O lack of a torso the loss of the so-called "swimming organ"
- Echinoderm skeleton consists of: O a. An internal skeleton of calcium carbonate. O b. An internal skeleton of silica. An exoskeleton of silica. O d. Anexoskeleton of chitin. in O e. An exoskeleton of calcium carbonate.Name one unique feature of the Arthropoda that is visible on honey bees. Also, can you guess what the bee's stinger is made out of (hint: same component as lobster exoskeletons).Skull parts are represented in only____ of the more than 100 genera of sauropods. A 20 B) 24 C) 36 55