Chapter Questions
Identify the plant hormone in the key that is associated with each phenomenon. Each answer may be used more than once.a. auxinb. gibberellinc. cytokinind. abscisic acide. ethyleneinitiates and maintains seed and bud dormancy
Identify the plant hormone in the key that is associated with each phenomenon. Each answer may be used more than once.a. auxinb. gibberellinc. cytokinind. abscisic acide. ethylenestimulates root development
Identify the plant hormone in the key that is associated with each phenomenon. Each answer may be used more than once.a. auxinb. gibberellinc. cytokinind. abscisic acide. ethyleneis capable of moving from plant to plant through the air
Identify the plant hormone in the key that is associated with each phenomenon. Each answer may be used more than once.a. auxinb. gibberellinc. cytokinind. abscisic acide. ethylenecauses phototropism in stems
Identify the plant hormone in the key that is associated with each phenomenon. Each answer may be used more than once.a. auxinb. gibberellinc. cytokinind. abscisic acide. ethyleneis responsible for apical dominance
Identify the plant hormone in the key that is associated with each phenomenon. Each answer may be used more than once.a. auxinb. gibberellinc. cytokinind. abscisic acide. ethylenestimulates leaf, fruit, and flower drop
Identify the plant hormone in the key that is associated with each phenomenon. Each answer may be used more than once.a. auxinb. gibberellinc. cytokinind. abscisic acide. ethyleneis needed to break seed and bud dormancy
Identify the plant hormone in the key that is associated with each phenomenon. Each answer may be used more than once.a. auxinb. gibberellinc. cytokinind. abscisic acide. ethyleneprevents senescence
A tropism is defined asa. a growth response to a directional stimulus.b. a plant response to water stress.c. a hormonal response to overcrowding by other plants.d. abscission of leaves due to plant hormones.
Root cells exhibit positive gravitropism with the help ofa. auxin in the root cells.b. amyloplasts in root cells.c. exposure to sunlight.d. a nearby substrate.
Phytochromea. can be affected by red and far-red wavelengths of light.b. affects a plant's photoperiod.c. helps plants sense proximity to neighboring plants.d. All of these are correct.
Stigma is to carpel as anther is toa. sepal.b. stamen. c. ovary.d. style.
The megaspore is similar to the microspore in that botha. have the diploid number of chromosomes.b. become an embryo sac.c. become a gametophyte that produces a gamete.d. are necessary for seed production.e. Both c and d are correct.
Double fertilization is the formation of a __________ and $a(n)$ ___________.a. zygote, zygoteb. zygote, pollen grainc. zygote, megaspored. zygote, endosperm
Which of the following is a natural method of asexual reproduction in plants?a. meristem cultureb. propagation from stolons or rhizomesc. infection with Agrobacteriumd. cell suspension culture
Plant tissue culture takes advantage ofa. phototropism.b. gravitropism.c. asexual reproduction from tubers.d. totipotency.
Plant biotechnology can lead toa. increased crop production.b. disease-resistant plants.c. new or improved treatments for human diseases.d. more nutritious crops.e. All of these are correct.