BIOL 1004 FINAL EXAM questions with answers

BIOL 1004 FINAL EXAM questions with
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answers

A ventral muscular foot, a shell, and a radula. - CORRECT
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ANSWERS ✔✔The molluscan body plan includes:|\ |\ |\ |\ |\




A file like mouthpart used to scrape off bits of food. -
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CORRECT ANSWERS ✔✔Radula. |\ |\




Hold the valves of clams tightly closed - CORRECT
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ANSWERS ✔✔Adductor muscles |\ |\




Water is brought into this via the incurrent siphon and
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exits via the excurrent siphon - CORRECT ANSWERS
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✔✔Mantle cavity |\




Water is brought into the mantle cavity via the
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______________ __________ and exits via the _____________ |\ |\ |\ |\ |\ |\ |\



__________ - CORRECT ANSWERS ✔✔Incurrent siphon &
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Excurrent siphon |\




Gas exchange occurs between the water in the mantle
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cavity and blood in the ______ - CORRECT ANSWERS
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✔✔Gills

,Tiny food particles in the water are trapped in mucus
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coating the gills and both mucus and food are carried by
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cilia to the ______________ __________ and onto the mouth -
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CORRECT ANSWERS ✔✔Labial palps |\ |\ |\




Clams have this |\ |\




Blood is carried from the heart in vessels that empty true
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blood into sinuses. The blood moves slowly through the
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sinuses and back into the heart. - CORRECT ANSWERS
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✔✔open circulatory system |\ |\




Octopi and squids use this to help eat food.
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Food is eaten with the aid of a ________ _______ - CORRECT
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ANSWERS ✔✔Horny beaks
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Water enters the mantle cavity via a _______ and bathes
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the gills, enabling gas exchange to occur.
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Water can also be forcefully ejected through this, which
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provides a water-jet method of propulsion. - CORRECT
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ANSWERS ✔✔Siphon |\




Echinoderms and chordates are_______________; the |\ |\ |\ |\ |\



blastopore of the embryo becomes the anus and the |\ |\ |\ |\ |\ |\ |\ |\ |\

, mouth is formed from the second opening to appear. -
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CORRECT ANSWERS ✔✔Deuterostomate |\ |\




Spines that project from the calcareous plates forming the
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___________________ just under the thin epidermis. -
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CORRECT ANSWERS ✔✔Endoskeleton |\ |\




A major distinctive characteristic of echinoderms is the
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presence of a _________ ___________ ____________ that
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provides a means of locomotion via the associated
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___________ ________ in most forms - CORRECT ANSWERS |\ |\ |\ |\ |\ |\ |\ |\



✔✔Water vascular system and tube feet |\ |\ |\ |\ |\




Is characteristic of adult echinoderms, is secondarily
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acquired because their larvae is bilaterally symmetrical -
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CORRECT ANSWERS ✔✔Radial symmetry |\ |\ |\




Radial - CORRECT ANSWERS ✔✔Adult echinoderms are
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what type of symmetry?
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Water vascular system and tube feet - CORRECT
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ANSWERS ✔✔Echinoderms have a __________ ___________
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________ that is associate with __________ _______ in most
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forms