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Biology 117 Exam 3 Hubbard (WVU) (1)
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Biology 117 Exam 3 Hubbard (WVU) (1)
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Biology 117 Exam 3 Hubbard (WVU)How do organisms have so many different types of cells? - CORRECT
ANSWER-Different patterns of gene expression.
Normally, fruit flies have a single pair of wings and a pair of halteres that help
stabilize flight. What type of mutation is most likely responsible for this fruit fly mutant
phenotype? - CORRECT ANSWER-Homeotic Genes
In a developing embryo ______ occurs before _______. - CORRECT
ANSWER-gastrulation; organogenesis
Given the results of a mutation in a normal fruit fly embryo, what kind of gene was
mutated here? - CORRECT ANSWER-Morphogen
Are all plants multicellular organisms? Are all plants Eukaryotic? - CORRECT
ANSWER-Most plants are multicellular, all are eukaryotic
Plant cell walls are made of what substance? - CORRECT ANSWER-made of
cellulose
In what biological molecule do plants store their metabolic products (used as an
energy source)? - CORRECT ANSWER-Stored their energy as carbohydrates
(starch) in light-independent reactions
Are plants monophyletic? If so, what do we consider to be their most recent common
ancestor? - CORRECT ANSWER-They are monophyletic and their most recent
ancestor is green algae
What are the three categories that divide plants? - CORRECT ANSWER-Non
vascular plants: no specialized cells that conduct water or nutrients.
Seedless vascular: have specialized vascular tissues, but do not produce seeds.
Seed plants: have specialized vascular tissues and produce seeds
cuticle - CORRECT ANSWER-waxy layer that prevents water loss from stems and
leaves
stomata - CORRECT ANSWER-pores that allow for gas exchange in photosynthetic
tissues
water conducting cells - CORRECT ANSWER-movement of water, structural
strength to fight gravity
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