5.6.9: Review Questions
- Page ID
- 98182
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\(\newcommand{\avec}{\mathbf a}\) \(\newcommand{\bvec}{\mathbf b}\) \(\newcommand{\cvec}{\mathbf c}\) \(\newcommand{\dvec}{\mathbf d}\) \(\newcommand{\dtil}{\widetilde{\mathbf d}}\) \(\newcommand{\evec}{\mathbf e}\) \(\newcommand{\fvec}{\mathbf f}\) \(\newcommand{\nvec}{\mathbf n}\) \(\newcommand{\pvec}{\mathbf p}\) \(\newcommand{\qvec}{\mathbf q}\) \(\newcommand{\svec}{\mathbf s}\) \(\newcommand{\tvec}{\mathbf t}\) \(\newcommand{\uvec}{\mathbf u}\) \(\newcommand{\vvec}{\mathbf v}\) \(\newcommand{\wvec}{\mathbf w}\) \(\newcommand{\xvec}{\mathbf x}\) \(\newcommand{\yvec}{\mathbf y}\) \(\newcommand{\zvec}{\mathbf z}\) \(\newcommand{\rvec}{\mathbf r}\) \(\newcommand{\mvec}{\mathbf m}\) \(\newcommand{\zerovec}{\mathbf 0}\) \(\newcommand{\onevec}{\mathbf 1}\) \(\newcommand{\real}{\mathbb R}\) \(\newcommand{\twovec}[2]{\left[\begin{array}{r}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\ctwovec}[2]{\left[\begin{array}{c}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\threevec}[3]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\cthreevec}[3]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\fourvec}[4]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\cfourvec}[4]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\fivevec}[5]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\cfivevec}[5]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\mattwo}[4]{\left[\begin{array}{rr}#1 \amp #2 \\ #3 \amp #4 \\ \end{array}\right]}\) \(\newcommand{\laspan}[1]{\text{Span}\{#1\}}\) \(\newcommand{\bcal}{\cal B}\) \(\newcommand{\ccal}{\cal C}\) \(\newcommand{\scal}{\cal S}\) \(\newcommand{\wcal}{\cal W}\) \(\newcommand{\ecal}{\cal E}\) \(\newcommand{\coords}[2]{\left\{#1\right\}_{#2}}\) \(\newcommand{\gray}[1]{\color{gray}{#1}}\) \(\newcommand{\lgray}[1]{\color{lightgray}{#1}}\) \(\newcommand{\rank}{\operatorname{rank}}\) \(\newcommand{\row}{\text{Row}}\) \(\newcommand{\col}{\text{Col}}\) \(\renewcommand{\row}{\text{Row}}\) \(\newcommand{\nul}{\text{Nul}}\) \(\newcommand{\var}{\text{Var}}\) \(\newcommand{\corr}{\text{corr}}\) \(\newcommand{\len}[1]{\left|#1\right|}\) \(\newcommand{\bbar}{\overline{\bvec}}\) \(\newcommand{\bhat}{\widehat{\bvec}}\) \(\newcommand{\bperp}{\bvec^\perp}\) \(\newcommand{\xhat}{\widehat{\xvec}}\) \(\newcommand{\vhat}{\widehat{\vvec}}\) \(\newcommand{\uhat}{\widehat{\uvec}}\) \(\newcommand{\what}{\widehat{\wvec}}\) \(\newcommand{\Sighat}{\widehat{\Sigma}}\) \(\newcommand{\lt}{<}\) \(\newcommand{\gt}{>}\) \(\newcommand{\amp}{&}\) \(\definecolor{fillinmathshade}{gray}{0.9}\)Seed plants are ________.
- all homosporous
- mostly homosporous with some heterosporous
- mostly heterosporous with some homosporous
- all heterosporous
Besides the seed, what other major structure diminishes a plant’s reliance on water for reproduction?
- flower
- fruit
- pollen
- spore
In which of the following geological periods would gymnosperms dominate the landscape?
- Carboniferous
- Permian
- Triassic
- Eocene (present)
Which of the following structures widens the geographic range of a species and is an agent of dispersal?
- seed
- flower
- leaf
- root
Which of the following traits characterizes gymnosperms?
- The plants carry exposed seeds on modified leaves.
- Reproductive structures are located in a flower.
- After fertilization, the ovary thickens and forms a fruit.
- The gametophyte is the longest phase of the life cycle.
Megasporocytes will eventually produce which of the following?
- pollen grain
- sporophytes
- male gametophytes
- female gametophytes
What is the ploidy of the following structures: gametophyte, seed, spore, sporophyte?
- 1n, 1n, 2n, 2n
- 1n, 2n, 1n, 2n
- 2n, 1n, 2n, 1n
- 2n, 2n, 1n, 1n
In the northern forests of Siberia, a tall tree is most likely a:
- conifer
- cycad
- Ginkgo biloba
- gnetophyte
Which of the following structures in a flower is not directly involved in reproduction?
- the style
- the stamen
- the sepal
- the anther
Pollen grains develop in which structure?
- the anther
- the stigma
- the filament
- the carpel
In the course of double fertilization, one sperm cell fuses with the egg and the second one fuses with ________.
- the synergids
- the polar nuclei of the center cell
- the egg as well
- the antipodal cells
Corn develops from a seedling with a single cotyledon, displays parallel veins on its leaves, and produces monosulcate pollen. It is most likely:
- a gymnosperm
- a monocot
- a eudicot
- a basal angiosperm
Which of the following plant structures is not a defense against herbivory?
- thorns
- spines
- nectar
- alkaloids
White and sweet-smelling flowers with abundant nectar are probably pollinated by
- bees and butterflies
- flies
- birds
- wind
Abundant and powdery pollen produced by small, indistinct flowers is probably transported by:
- bees and butterflies
- flies
- birds
- wind
Plants are a source of ________.
- food
- fuel
- medicine
- all of the above