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Tienes 35 minutos para completar 20 preguntas de este test.
Which eukaryotic kingdom includes members that are the result of endosymbioses that included an ancient proteobacterium and an ancient cyanobacterium?
Plantae
Fungi
Animalia
Protista
Which of the following is an incorrect description of a group of organisms observed in the Plant kingdom?
Glaucophytes are rare algal species.
Red algae and green algae both contain chlorophyll a.
Streptophytes include both the land plants and green algae.
Charophytes are a group of oceanic red algae.
All of the following are features of land plants EXCEPT:
cuticle
multicellular gametangia
single-celled gametes
mutualistic associations with fungi
All plants exhibit alternation of generations. This means their life cycle
includes both haploid and diploid gametes.
shows only asexual reproduction.
has both a multicellular haploid stage and a multicellular diploid stage.
does not include meiosis.
Which of the following is true of the bryophytes (liverworts, hornworts, and mosses)?
it is the only group that shows alternation of generations.
Bryophytes exhibit extensive vascular tissue.
The sporophyte is the more noticeable stage.
The gametophyte is the more noticeable stage.
A sporophyte...
is haploid.
develops from the zygote.
develops from spores.
produces gametes.
The vascular plants have a vascular system consisting of ____ for transporting water and ____ for transporting nutrients produced in photosynthesis.
phloem...xylem
xylem...phloem
tracheids...fibers
fibers...tracheids
True roots are believed to have evolved from ____ and ____.
rhyniophytes...lycophytes
microphylls...megaphylls
rhizomes...rhizoids
monilophytes...euphyllophytes
Bryophytes : mosses :: monilophytes :
seed plants
gymnosperms
club mosses
ferns
In the conifers, the
gametophyte is prominent, and the sporophyte is dependent upon the gametophyte.
sporophyte is prominent, with the sporophyte and gametophyte living independently.
sporophyte is prominent, and the gametophyte is dependent upon the sporophyte.
gametophyte is prominent, and the sporophyte stage has disappeared.
Which of the following characters is seen in the gymnosperms, but is not seen in other seeded vascular plants?
alternation of generations
exposed seeds
sporophyte stage
pollen
Which of the following terms is least like the others?
microgametophyte
anther
ovule
Which of the following is NOT characteristic of a monocot?
leaves with parallel veins
flower parts usually in threes or multiples of three
seed with two cotyledons
root xylem and phloem in a ring
In the diagram, what numbers are associated with the megagametophyte?
1, 2, and 9
10 and 11
1, 2, 3, and 4
6 and 7
Labels 6 and 7 on the diagram are indicating the ___ of the flower.
anther and filament, respectively.
filament and anther, respectively.
pollen and pollen tube, respectively.
stigma and style, respectively.
All of the following help to regulate plant growth and development EXCEPT
environmental cues.
photoreceptors.
seed dormancy.
hormones.
Gibberellins : growth :: cytokinins :
growth
signal transduction
phototropism
cell division
In MOST angiosperms, male and female reproductive structures develop
in separate plants.
on different flowers on the same plant.
in the same flower.
at different times so self-fertilization is avoided.
____ is often used to promote the aging of fruit.
auxin
cytokinin
abscisic acid
ethylene
All of the following are examples of magnoliids EXCEPT
coconut.
cinnamon.
avocado.
magnolias.
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