Ch. 30 Practice Test
In gymnosperms, the seed coat developed from the integument. in angiosperms, the seed coat developed from the ___. A. integuments B. endosperm C. ovary wall D. receptacle E. female gametophyte
A
In ovulate cones, megasporocytes undergo ___ and produce ___ megaspores. A. Meiosis... Haploid B. Mitosis... Haploid C. Meiosis... Diploid D. Mitosis... Diploid E. Depending on environmental conditions, any of the listed responses may occur.
A
Like gymnosperms, many grasses and angiosperm trees are wind-pollinated. To conserve energy, these angiosperms do not produce complete flowers (complete flowers have all four of the basic parts). Which part would be unnecessary for wind-pollinated angiosperms? A. petals B. sepals C. anther D. ovaries E. fruits
A
The portion of a flower that receives the pollen is the ___? A. stigma B. ovary C. style D. filament E. anther
A
The vast majority of angiosperms with two cotyledons formerly classified as ___ are now classified as ___> A. dicots ... eudicots B. eudicots ... basal angiosperm C. monocots ... magnoliids D. eudicots ... dicots E. monocots ... dicots
A
Which of the following best states the advantages that seed have over spores ? A. Seeds contain embryonic plants, an abundant food supply, and a protective covering. B. Most seeds are poisonous; therefore, they are not consumed by animals and persist in the environment for long periods of time. C. Seeds are single cells, demanding fewer nutrients from the parent plants. D. Seeds can survive even in conditions that are unfavorable for the parent plants. E. Seeds can survive for extended periods of time at reduced metabolic rates.
A
In a typical conifer, how long does it take for fertilization to occur after pollination? A. Pollination occurs after fertilization B. It takes one year. C. The processes are simultaneous. D. It takes three years. E. It takes one season.
B
The diploid generation of the plant life cycle always ___. A. Develops from a spore B. Produces spores C. Is larger and more conspicuous than the haploid stage D. Produces gametes (sperm and eggs) E. Is called the gametophyte
B
Which of the following best describes the function of fruits? A. to distract herbivores from eating the leaves B. protection and dispersal of seeds C. reward for pollinators D. food storage for the plant to use over the winter E. depending on the plant species, any of the listed responses are possible.
B
Which of the following is true for seed plants, but NOT true of seed plants? A. A film of water is necessary for sperm to come in contact with eggs. B. The gametophyte is reduced and dependent on the sporophyte C. The spore is the main means of dispersing the offspring. D. The sporophyte is large, and the gametophyte is small and independent. E. The sporophyte is dependent on the gametophyte
B
Which of the following lists of features characterizes edicts? A. pollen grains with three openings, floral parts in multiples of three, netlike veins B. two cotyledons, netlike veins, taproot usually present C. scattered vascular bundles, netlike veins, floral parts in multiples of three D. one cotyledon, vascular bundles in rings, pollen grains with three openings. E. leaves with parallel veins, taproot usually present, vascular bundles arranged in rings.
B
A pea pod is formed from ___. A pea inside the pod is formed from ___. A. an ovary ... a pollen grain B. an ovule ... a carpel C. an ovary ... an ovule D. endosperm ... an ovary E. an anther ... an ovule
C
During pollination, pollen grains are transferred from the ___ to the ___. A. carpel ... stigma B. stigma ... ovary C. anther ... stigma D. anther ... sepal E. ovary ... anther
C
Each pollen grain of a gymnosperm contains a ___. A. Ginkgophyte B. Microsporocyte C. Male gametophyte D. Fertilized ovule E. Megasporocyte
C
Of the following, which is a difference in how reproduction occurs in gymnosperms compared to angiosperms? A. only angiosperm pollen grains form pollen tubes. B. only gymnosperms can contain male and female sporangia on the same plant C. only the sperm of angiosperms combine with two nuclei to for triploid endosperm D. only angiosperms have reduced gametophytes E. double fertilization only occurs in gymnosperms
C
Six major crops wheat, rice, maize, cassava, and sweet potatoes contribute disproportionately to hunan diets. what percentage of all the calories consumed by humans is supplied by these crops? A. 30% B. 65% C. 80% D. 90% E. 50%
C
The closest seedless relatives of seed plants produce one kind of spore that gives rise to a bisexual gametophyte. What does this suggest about the ancestors of seed plants? A. They were bryophytes B. They produced separate male and female gametophytes C. They were homosporous D. They were gymnosperms E. They were heterosporous
C
The pollen tube releases two sperm cells into the embryo sac. The result of this is the ___ . A. union of one sperm nucleus with the egg nucleus and the disintegration of the other sperm nucleus B. union of two sperm nuclei, forming a zygote C. Union of one sperm nuclei with the egg nucleus and of the other sperm nucleus with two nuclei of the central cell, forming a triploid nucleus called the endosperm D. fusion of both sperm nuclei with the egg nucleus and the formation of a triploid zygote E. formation of a gametophyte
C
The triploid nucleus of the embryo sac developed into the ___. A. seed B. carpel C. endosperm D. fruit E. embryo
C
What is located in the scalelike structures packed densely in pollen cones? A. sporophytes B. Developing pollen tubes C. Sporangia D. Megasporocytes E. Developing seedlings
C
Which example below is evidence provided by living gymnosperms of an evolutionary transition. A. In gymnosperm, two sperm are discharged into the pollen tube. B. gymnosperms only have on integument. C. The sperm of some gymnosperms have flagella. D. Some gymnosperms do not have reduced gametophytes. E. The sperm of gymnosperms do not require water or mobility fertilization.
C
Which types of angiosperms would most likely be wild-pollinated rather than animal-pollinated? A. Maize and wheat B. oak and maple trees C. The first and second responses are correct D. Non of the listed responses is correct. Plants with flowers are not wind-pollinated
C
A bright pink flower with deep floral tubes with most likely be pollinated by with mechanism? A. wind B. self-pollination C. bats D. birds with long beaks E. honeybees
D
Besides the plant tissue that humans ingest, which angiosperm tissue is most directly important for human survival? A. bark B. sepals C. petals D. xylem E. cones
D
A plant is said to be cross-pollinated if ___. A. if is pollinated by insects B. pollen grains are transferred from a different flower on the same plant C. its source of pollen is a different species of plant D. it is pollinated by wind E. pollen grains are transferred to a flower on a different plant
E
At current rates of deforestation, tropical rain forest will be eliminated in ___ years. A. 50 B. 10 C. 1000 D. 500 E. 200
E
Dietary supplements and decongestants containing ephedrine have recently become more strongly regulated in the United States. Which phylum contains the plant from which ephedrine is extracted? A. Phylum Coniferophyta B. Phylum Cycadophyta C. Phylum Anthopyta D. Phylum Ginkgophyta E. Phylum Gnetophyta
E
The cells within pollen grains are ___ and together comprise the ___. A. diploid... a new sporophyte B. haploid... spores C. Diploid... spores D. Diploid... sper nuclei E. Haploid... male gametophyte
E
The eggs of seed plants are fertilized within ovules, and the ovules the develop into... A. Spores B. Gametophytes C. Ovaries D. Fruit E. Seeds
E
What global change occurring between the Carboniferous period and the Permian period likely contributed to the success of the gymnosperms? A. An asteroid hit Earth, leading to the mass extinction that made way for gymnosperms to take over lands where other plants had perished. B Reptiles decreased in diversity and were replaced with amphibians better adapted for seed dispersal. C. Insects developed flight. D. The breakup of Pangea changed the flora and fauna of Earth dramatically E. The climate became drier and warmer.
E
Which gymnosperm phylum is characterized by large cones and fern-like leaves and thrived during the Mesozoic? A. Gentophyta B. Ginkgophyta C. Anthopyta D. Coniferophyta E. Cycadophyta
E
Which of the following adaptations is common to all seed plants? A. Reduced gametophytes B. Heterospory C. Pollen D. Ovules E. All of the listed responses are correct
E
After fertilization, the ___ developers into a seed and the ___ developers into a fruit. A. egg ... ovule B. egg ... ovary C. ovule ... ovary D. ovary ... ovule E. pollen grain ... ovule
c