A) The suspensor forms from the shoot apical meristem before development of the root apical meristem.
B) The development of the shoot and root apical meristems is controlled independently.
C) The plant hormone abscisic acid is important in the development of the shoot-root axis.
D) The protoderm establishes the procambium tissue in the young plant embryo.
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Multiple Choice
A) "I think you're right.Maybe there was a mutation in the LEAFY (LFY) gene, and the loss of LFY has promoted flowering and had pleiotropic effects on leaf morphology."
B) "No, those branches have just undergone phase change.Now they're in the adult form, and have become competent to respond to flowering signals."
C) "I think you're right.Maybe the embryonic flower (emf) gene is being overexpressed, and that's causing flowers to form."
D) "No, those morphological changes are just evidence that this plant's environment has changed during its lifetime."
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Multiple Choice
A) aleurone
B) hypocotyl
C) dicot
D) scutellum
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Multiple Choice
A) "Oh, I would have chosen the blue Receptacle."
B) "Those are great cars, but the pinecone tires don't roll very well."
C) "Me too! But I could only afford the yellow Androecium."
D) "The factory must have run out of class A genes."
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Multiple Choice
A) amyloplasts
B) protoplasts
C) chloroplasts
D) chromoplasts
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Multiple Choice
A) nutrient storage in seeds
B) long-term nutrient storage in perennial plants
C) outcrossing
D) chemical signaling among plants
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Multiple Choice
A) herbaceous perennials, which will come back year after year
B) woody perennials, which require little space and few resources
C) annuals, which will come back year after year
D) biennials, which will last twenty years before they die
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Multiple Choice
A) internode
B) epicotyl
C) hypocotyl
D) plumule
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Multiple Choice
A) "Superhunk" -- a plant with a mutation in the class A genes.
B) "Beautiful Innocence" -- a plant with a mutation in the class C genes.
C) "Clockface" -- a plant with a mutation in the CYCLOIDEA gene.
D) "Suspense" -- a plant with a mutation in the LEAFY gene.
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Multiple Choice
A) The monocot seeds he used were only able to produce a single cotyledon each.
B) The seeds were planted too deeply and used up their reserves before reaching the surface and sunlight.
C) The suspensor failed to develop into an embryo within each seed.
D) All seeds require fire in order to germinate.
Correct Answer
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