A) suspensor.
B) epidermal tissue.
C) ground tissue.
D) embryo sac.
E) ovulE.
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Multiple Choice
A) starch
B) waxes
C) proteins
D) fats
E) oils
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Multiple Choice
A) root cap
B) shoot apical meristem
C) root apical meristem
D) leaf primordia
E) cotyledons
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verified
Multiple Choice
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.
E) Apical meristems can increase the diameter of a stem provided the hormone levels are adequate at the time of germination.
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verified
Multiple Choice
A) hypocotyl
B) endosperm
C) scutellum
D) radicle
E) epicotyl
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verified
Multiple Choice
A) their photosynthesis does not contributes to seed nutritional storage reserves.
B) many fruits are green,hard,and sour before they become ripe.
C) immature fruits do not absorb wavelengths of light that would trigger seed germination.
D) Animals are no hungry at this time.
E) hormones have not been triggered yet.
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Multiple Choice
A) outside of the embryo sac
B) micropyle
C) integuments
D) pollen tube remnants
E) synergids
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verified
Multiple Choice
A) hypocotyl
B) endosperm
C) scutellum
D) radicle
E) epicotyl
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Multiple Choice
A) cotyledons
B) storage reserves
C) samaras
D) seed coats
E) suspensors
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Multiple Choice
A) early cell division and patterning
B) establishment of the root-shoot axis
C) establishment of the three embryonic tissue systems
D) synchronization of the biological clock
E) morphogenesis
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verified
Multiple Choice
A) The radial axis of the developing embryo develops before the root-shoot axis.
B) One gene controls nearly all plant root and shoot formation.
C) The MONOPTEROS gene (MP) stimulates chlorophyll synthesis in seeds.
D) Gibberellic acid is important in root-shoot axis formation.
E) Cells nearest to the suspensor ultimately form the root.
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Multiple Choice
A) It contains a protective coat formed from the outer layers of ovule cells.
B) The embryo is surrounded by nutritive tissue or has cotyledons that contain nutritive tissue.
C) It contains a large percentage of water to support the embryo.
D) It is a complex structure that allows the embryo to be dispersed to distant sites.
E) Environmental signals such as light or temperature can trigger germination.
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Multiple Choice
A) Oils help keep the embryo hydrated,allowing the seed to spread to drier habitats.
B) The oils allow the embryo to adjust itself relative to gravity.
C) Oils contain more mineral nutrients than carbohydrates.
D) Oils store about twice as much energy as an equivalent amount of starch.
E) Hormones diffuse more quickly through the oils.
Correct Answer
verified
Multiple Choice
A) Changes in the rate of cell division occur.
B) Many cell divisions occur but the embryos do not increase in size much.
C) Cells expand as they form as a result of turgor pressure.
D) Changes in the planes of cell division occur.
E) Plant hormones influence the orientation of microtubule deposition on the interior of the plasma membranE.
Correct Answer
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