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Refer to the figure showing the typical life cycle of a plant. Refer to the figure showing the typical life cycle of a plant.   Meiosis occurs early in the period represented by the blue portion of the figure.Could meiosis occur again later in the blue phase? Explain why or why not. Meiosis occurs early in the period represented by the blue portion of the figure.Could meiosis occur again later in the blue phase? Explain why or why not.

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No, there is not a s...

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Which structure is not directly involved in asexual reproduction in plants?


A) Root hairs
B) Stolons
C) Rhizomes
D) Suckers
E) Tubers

F) C) and D)
G) All of the above

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The seeds of a new kind of mangrove are not viviparous, which is unusual for that kind of tree.How do these seeds differ from other mangrove seeds?


A) They produce roots.
B) They die if not germinated within one season.
C) They are released from the fruit.
D) They become dormant.
E) They are protected from animal predators.

F) A) and B)
G) None of the above

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You manage a greenhouse that produces roses for Valentine's Day.Roses normally bloom in June.You need to produce roses that bloom in February.After setting the correct photoperiod in your greenhouse, you still do not have blooming roses.Which condition might have contributed to the problem?


A) The heating system allowed for fluctuations in temperature between 20°C and 25°C.
B) The furnace mechanic accidentally turned off the lights for an hour two days in a row.
C) The cleaning crew turned the lights on for an hour three nights in a row.
D) The watering schedule was interrupted for two days in a row.
E) The lights are not strong enough to induce flowering.

F) A) and B)
G) C) and D)

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Perfect and imperfect flowers differ from each other in that perfect flowers have all four types of flower parts but imperfect flowers are missing


A) either stamens or petals.
B) either sepals or carpels.
C) either stamens or carpels.
D) either petals or sepals.
E) sepals.

F) C) and E)
G) D) and E)

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Which asexual tissue culture technique is used to produce virus-free plants?


A) Root culture
B) Leaf culture
C) Root hair culture
D) Thin layer culture
E) Meristem culture

F) A) and E)
G) C) and D)

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Which plant organ produces the signal to flower?


A) Root
B) Petal
C) Sepal
D) Leaf
E) Stem

F) None of the above
G) A) and B)

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You have found two plants that look similar except for their flowers.After bringing samples home for yourself and your friends, you find that neither plant can produce fruit unless both types are in the same garden, and even then only one plant produces fruit.You determine that the plants are actually the same species and must be _______.

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A unique feature of angiosperm sexual reproduction is the triploid


A) megagametophyte.
B) microgametophyte.
C) endosperm.
D) zygote.
E) synergid.

F) A) and E)
G) B) and C)

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Flowers can occur singly or in an orderly cluster known as a(n)


A) inflorescence.
B) flower cluster.
C) head.
D) grouping.
E) daisy chain.

F) B) and E)
G) C) and D)

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Which list represents the correct order of events (from earliest to latest) in the reproduction of angiosperms?


A) Fertilization meiosis egg formation
B) Egg formation fertilization meiosis
C) Egg formation meiosis fertilization
D) Meiosis egg formation fertilization
E) Meiosis fertilization egg formation

F) All of the above
G) B) and D)

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The major role of the fruit of a flowering plant is to facilitate _______.

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Do all flowering plants act as either short- or long-day plants with respect to flowering?


A) Yes, all flowering plants act as either short- or long-day plants.
B) Yes, but some flowering plants can switch between acting as short- or long-day plants.
C) Yes, but some plants switch from short-day to long-day as they age.
D) No, some plants flower only when the day length and night length are exactly equal.
E) No, some plants flower independently of day length.

F) A) and B)
G) A) and C)

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Grafting two plants involves the use of


A) two stocks and no scions.
B) one scion and one stock.
C) two scions and one stock.
D) one scion and two stocks.
E) two scions and two stocks.

F) C) and E)
G) All of the above

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When are long-day plants most likely to bloom?


A) Midsummer
B) After periods of sunny weather
C) After periods of cloudy weather
D) When days are longer than a critical minimum
E) When days are shorter than a critical minimum

F) A) and E)
G) C) and E)

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In terms of their moisture content, fruits can be _______ or dry when they are mature.

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The pollen grains are the male _______ of the flowering plant.

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In flowers, the pollen tube grows most of its distance through the _______ to reach the ovary.


A) stigma
B) sepal
C) integument
D) style
E) ovule

F) A) and E)
G) B) and C)

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You plan to induce the flowering of a crop of long-day plants in the field by using artificial light.Is it necessary to keep the lights on continuously from sundown until the point at which the critical day length is reached? Why or why not?

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No, it isn't necessary. Just a...

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Which of the following is a temporal pattern of plant flowering?


A) Annual
B) Biannual
C) Monopausal
D) Diapausal
E) Peregrine

F) D) and E)
G) None of the above

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