A) the medusa body form B) a slow-moving or sessile lifestyle in the adult C) di

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A) the medusa body form B) a slow-moving or sessile lifestyle in the adult C) diploblastic design D) bilateral symmetry in the mobile larval forms oe miliner enah nimals and decide to studythem. You observe that the animals have a body cavity, eat microscopic food particles, reproduce by parthenogenesis, and have offspring that do not und In your laboratory, you examine a vial of freshwater from a local pond. You notice several unfamiliar small (less than else would you expect to observe about this organism? A) chaetae B) lophophore C) scolex corona (crown 9.,) You discover an animal that undergoes embryonic torsion this animal should most probably be a(n) A) arthropod B) annelid C) mollusk D) nematode 0,) Nudibranchs, a type of predatory sea slug, can have various protuberances (that is, extensions) on their dorsal surfaces. Rhinophores are paired structures, located close to the head, which bear many chemoreceptors. Dorsal plummules, usually located posteriorly, perform respiratory gas exchange. Cerata usually cover much of the dorsal surface and contain nematocysts at their tips. The spiracles and tracheae of insects have a function most like that ofwhile the antennae of insects have a function most like A) rhinophores/ cerata B) dorsal plummules/rhinophores C) cerata/ chemoreceptors D) chemoreceptors/ dorsal plummules 11.) You find a multi-legged animal in your garden and want to determine if it is a centipede or a millipede. You take the animal to a university where a myriapodologist quickly tells you that you have found a centipede. Which of the following may have allowed her to make this distinction? A) venomous fangs B) segmentation C) the total number of legs D) molting 12.) If a scallop the habitat? farmer wanted to maximize her harvest, which type of echinoderm would she be most concerned about in A) sea cucumbers B) brittle or feather stars C) sea stars D) sea urchins 13.) You believe that an adult animal you are examining is a vertebrate but concede that it may be an invertebrate chordate. Which of the following would ensure that you are indeed looking at a vertebrate? A) It has a dorsal hollow nerve cord. B) It has a cranium. C) Its notochord functions as an endoskeleton. D) It uses its pharyngeal slits for filter feeding 14.) Which of the following characters is found in many tetra pods but not in any type of fish? B) extensive parental care C) production of amniotic eggs D) viviparity 15.) In what w ay are monotremes like more ancestral chordate lineages, as opposed to more recently evolved mammal A) Monotremes are oviparous, other mammals are viviparous. B) Monotremes perform little parental care; other mammals use lactation to feed offspring C) Monotremes are ectothermic, other mammals are endothermic. D) Monotremes perform external fertilization; other mammals perform internal fertilization.

Explanation / Answer

Q9:- Option C (mollusks)

Explanation:- only mollusks undergo embryonic torsion

Q10:- Option B Dorsal plummules and rhinophores.

Q11:- Option A Venomous fangs

Explanation:- venomous fangs are absent in millipedes

Q13:- Option C ( its notochord functions as endoskelton)

Q14:- Option A Production of amniotic eggs

Q15:- Option A ( Monotremes are oviparous whereas other mammals are viviparous.

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