Webchiton: [noun] any of a class (Polyplacophora) of elongated bilaterally symmetrical marine mollusks with a dorsal shell of calcareous plates. WebStudy with Quizlet and memorize flashcards containing terms like A land snail, a clam, and an octopus all share A) a mantle. B) a radula. C) gills. D) distinct cephalization., Which …
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Webthe type of radial symmetry that most echinoderms have: pentamerous what is this type of symmetry based on? five parts what do they lack a head no top or bottom or left or right side list six examples of echinoderms sea stars sand dollars sea biscuits sea urchin sea cucumber crinoids sea stars belong to what class asteroidea WebAug 26, 2024 · Animal Kingdom MCQ Class 11 Biology provided below covers all important topics given in this chapter. These MCQs will help you to properly prepare for exams. Question. Contractile vacuole of Amoeba placed in salt water will: (a) Burst (b) Disappear (c) Enlarge (d) Multiply Answer Question. list of bears qb from year to years
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Weba. can carry out their tasks more effectively than cells that must do many tasks. b. are found only in chordates and echinoderms. c. always operate independently of all other cells. d. All of the above. c. a tissue. A group of similar cells organized into a functional unit is called. a. a nervous system. WebAug 23, 2024 · The Polyplacophora, commonly called chitons, are strictly benthic mollusks, exclusively marine, characterized by a flattened body with bilateral symmetry, presently covered by a shell formed by eight superimposed dorsal plates, imbricate and articulated. The shell is surrounded by a thick fold of the mantle, like a belt, called perinotum, in ... WebMolluscs have bilateral symmetry . Class Polyplacophora. The Class Polyplacophora contains the chitons. There are about 1,000 polyplacophora species worldwide with about 120 living along North America's Pacific coast. Chitons are oval-shaped with a convex dorsal surface. Their shells consist of eight overlapping, calcareous plates. images of psychographic segmentation