The three primary germ layers are formed during
a. fertilization.
b. cleavage.
c. organ formation.
d. gastrulation.
a
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Which plant specialization mutually benefits the young root and a fungus? a. All of these choices
b. Root nodules c. Mycorrhizae d. Root hairs e. None of these choices.
An autosomal dominant condition that causes a person to grow no taller than about 4 feet 4 inches is
a. Marfan syndrome. b. Tay-Sachs disease. c. Huntington disease. d. achondroplasia. e. phenylketonuria.
________ is the observable response of organisms to external or internal stimuli.
A. Ecology B. Allomonal mediation C. Behavior D. Pheromonal mediation E. Behavioral ecology
At the Beautiful Mutants Flower Shop, a variety of unique mutant plants are sold. What would be the best flower to give to a friend who is allergic to pollen?
A. "Beautiful Innocence" -- a plant with a mutation in the class C genes. B. "Suspense" -- a plant with a mutation in the LEAFY gene. C. "Superhunk" -- a plant with a mutation in the class A genes. D. "Clockface" -- a plant with a mutation in the CYCLOIDEA gene.