Biology Lab Final - USF - Bio 2 Fall Sem. Questions and Answers

Biology Lab Final - USF - Bio 2 Fall Sem. Questions and
Answers

Question 1.
Class Asteroidea (Sea Star)
Correct Answer: -madreporite - sucks in water anus - on aboral side -ambulacral
grooves - down middle of arms - filled with tube feet -digestive glands run down
each arm -cardiac stomach - oral part that is expelled pyloric stomach - aboral
-has complete gut separate sexes, gonads under digestive glands -Water
Vascular System - madreporite > stone canal > ring canal > 5 radial canals >
transverse canals > ampullae > podia (oral side)


Question 2.
4 Characteristics of Chordates
Correct Answer: Notochord - flexible cartilaginous rods Hollow Dorsal Nerve
Cord - on dorsal side of notochord Pharyngeal slits Muscular postanal tail


Question 3.
immature proglottid and scolex
Correct Answer: proglottid - segments that detach and leave eggs - immature,
mature, gravid scolex - mouth hook thing to cling to stuff


Question 4.
mastax
Correct Answer: looks like beating heart


Question 5.
Yeast
Correct Answer: -unicellular fungus -divide by binary fission or budding
-Saccharomyces cerevisiae (used in baking bread and brewing beer). -Candida
albicans shifts between unicellular yeast state and multicellular growth state
(mold). (called Y-M shift) -Y-M shift associated with pathogenesis -Candida
albicans: yeast vaginitis and thrush


Question 6.
Arachnida spiders
Correct Answer: -30,000 species, terrestrial and prey on insects and other
invertebrates -internal glands that secrete elastic protein silk -silk released
throuhg spinnerets and used to make webs


Question 7.
Lophotrochozoa
Correct Answer: -animals with lophophore (specialized feeding apparatus
consisting of ciliated tentacles surrounding mouth) and trochophore larval
stage. -flatworms, rotifers, lophophorates, mollusks, and annelid worms.
(textbook says bryozoans, brachiopods,rotifers, mollusks, and annelids)



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, Question 8.
fruticose lichen
Correct Answer: 3 dimensional and shrubby


Question 9.
Class Merostomata (horseshoe crab) limulus polyphemus
Correct Answer: -common marine arthropod in atlantic coast and gulf of mexico
-has cephalothorax, and abdomen -more closely related to spiders than
crustaceans. -carpace covers cephalothorax, and separated from abdomen by
flexible joint -breathe using book gills: found as appendages on abdomen -uses
telson (tail) to flip back over -living fossils because theyre ancient since
cambrian period and unchanged. -1st pair of legs is chelicerae for manipulating
food, next 2 pairs are pedipalps, and last 4 for walking


Question 10.
bracket fungus
Correct Answer: No separate answer was provided in the source PDF.


Question 11.
Clade Bilateria
Correct Answer: -animals with bilateral symmetry -triploblastic - 3 embryonic
tissue layers (structures and organs develop from this) -divided into 2 additional
clades based on differences in developmental pathways: protostomes and
deuterostomes


Question 12.
clam dissection
Correct Answer: No separate answer was provided in the source PDF.


Question 13.
Class Echinoidea
Correct Answer: -Ossicles (legs/spines) > test (sand dollar body, endoskel)
-Podia or movable spines -Aristotle's Lantern - structure of 5 internal teeth -Sea
urchins - opportunistic omnivores - scrape up algae -Sand dollars -
scavngers/suspension feeders -Pedicellaria - pincherlike object - keeps test
clean, defense against encrusting organisms -Anus directly on top of urchin


Question 14.
Skulls
Correct Answer: Binocular vision - predator Side vision - prey


Question 15.
true tissue
Correct Answer: stable association of cells w/ similar structure and fxn


Question 16.
Hydra sp.


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