Which of the following most directly controls the flowering response in short-day plants? a. length of the light period b. length of the dark period c.
Dec 28, 2015
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Which of the following most directly controlsthe flowering response in short-day plants?
a. length of the light periodb. length of the dark periodc. relative amounts of blue light availabled. intensity of light during the light periode. air temperature during the dark period
Answer: b
The coiling of a vine around a pole is due to
a. phototropismb. gravitropismc. thigmotropismd. circadian rhythmse. photoperiodism
Answer: c
In plants, the initiation of flowering in responseto photoperiod is triggered by changes in
a. ethyleneb. gibberellic acidc. auxind. phytochromee. cytokinin
Answer: d
a. Indoleactic acid (IAA)b. Cytokininc. Gibberellind. Ethylenee. Abscisic acid
1. A gas the hastens fruit ripening
2. Promotes germination
3. Stimulates activation of proteins for mitosis
Answer: d
Answer: c
Answer: b
(coleoptile)
SAR= Systemic acquired resistance• Chemicals that spread the “alarm” of infection
Salicylic acid
The coiling of a vine around a pole is due to
a. phototropismb. gravitropismc. thigmotropismd. circadian rhythmse. photoperiodism
Answer: c
Which of the following most directly controlsthe flowering response in short-day plants?
a. length of the light periodb. length of the dark periodc. relative amounts of blue light availabled. intensity of light during the light periode. air temperature during the dark period
Answer: b
a. Indoleactic acid (IAA)b. Cytokininc. Gibberellind. Ethylenee. Abscisic acid
1. A gas the hastens fruit ripening
2. Promotes germination
3. Stimulates activation of proteins for mitosis
Answer: d
Answer: c
Answer: b
In plants, the initiation of flowering in responseto photoperiod is triggered by changes in
a. ethyleneb. gibberellic acidc. auxind. phytochromee. cytokinin
Answer: d
Only female gametes are produced in whichof the following structures?
a. antheridiab. stamensc. protonematad. flowerse. archegonia
Answer: e
Which is true of seeds?
a. They contain the gametophyte.b. They are characteristic of all plants.c. They are a mechanism for pollen dispersal.d. They are not characteristic of conifers.e. They contain the cotyledon.
Answer: e
Which of the following occurs after fertilization?
a. The ovule becomes the seed, the ovary becomes the fruit.b. The ovary becomes the seed, the ovule becomes the fruit.c. The micropyle becomes the seed, the sepals become the fruit.d. The stigma becomes the seed, the ovule becomes the fruit.e. The micropyle becomes the seed, the ovary becomes the fruit. Answer: a
Which of the following structures is NOT partof the pistil?
a. ovuleb. ovaryc. styled. anthere. stigma
Answer: d
Angiosperms (flowering plants) have widedistribution in the biosphere and the largestnumber of species in the plant kingdom.
(a) Discuss the function of FOUR structures forreproduction found in angiosperms and theadaptive (evolutionary) significance of each.(b) Mosses (Bryophytes) have not achievedthe widespread terrestrial success of angiosperms.Discuss how the anatomy and reproductive strategies of mosses limit their distribution.(c) Explain alternation of generations in eitherangiosperms or mosses.
(Carpel)
Which is true of seeds?
a. They contain the gametophyte.b. They are characteristic of all plants.c. They contain the cotyledon.d. They are a mechanism for pollen dispersal.e. They are not characteristic of conifers.
Answer: c
Which of the following structures is NOT partof the pistil?
a. ovuleb. ovaryc. styled. stigmae. anther
Answer: e
Which of the following occurs after fertilization?
a. The ovule becomes the seed, the ovary becomes the fruit.b. The ovary becomes the seed, the ovule becomes the fruit.c. The micropyle becomes the seed, the sepals become the fruit.d. The stigma becomes the seed, the ovule becomes the fruit.e. The micropyle becomes the seed, the ovary becomes the fruit. Answer: a
Only female gametes are produced in whichof the following structures?
a. antheridiab. archegoniac. stamensd. protonematae. flowers
Answer: b
Angiosperms (flowering plants) have widedistribution in the biosphere and the largestnumber of species in the plant kingdom.
(a) Discuss the function of FOUR structures forreproduction found in angiosperms and theadaptive (evolutionary) significance of each.(b) Mosses (Bryophytes) have not achievedthe widespread terrestrial success of angiosperms.Discuss how the anatomy and reproductive strategies of mosses limit their distribution.(c) Explain alternation of generations in eitherangiosperms or mosses.
Flowering plants have evolved variousstrategies for fertilization.
(a) Describe the process of fertilization in flowering plants.
(b) Discuss TWO mechanisms of pollen transfer and the adaptations that facilitate each transfer.Some species of flowering plants have evolvedMechanisms to prevent self-fertilization.
(a) Discuss an evolutionary advantage of preventing self-fertilization.
(b) Describe TWO mechanisms that prevent self-fertilization.
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