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BSC 2011 Ch 30

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Nov 21st, 2023
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42 test answers
question
Which of the following is not an advantage seeds provide over spores?Protective integumentMulticellularityAsexual reproductionLong period of dormancyStored food supply
answer
Asexual reproduction
question
Which example below is evidence provided by living gymnosperms of an evolutionary transition between seedless and seed plants?Some gymnosperms do not have reduced gametophytes.The sperm of some gymnosperms have flagella.In gymnosperms, two sperms are discharged into the pollen tube.The sperm of gymnosperms do not require water or mobility for fertilization.Gymnosperms only have one integument.
answer
The sperm of some gymnosperms have flagella.
question
Which of the following is a trait possessed by all angiosperms?Pollination by animalsDouble fertilizationSeeds dispersed by animalsFree-living gametophyteSeeds produced in ovulate cones
answer
Double fertilization
question
Which of the following best describes the function of fruits?Depending on the plant species, any of the listed responses are possibleProtection and dispersal of seedsTo distract herbivores from eating the leavesFood storage for the plant to use over the winterReward for pollinators
answer
Protection and dispersal of seeds
question
Angiosperms are thought to have originated in which period?
answer
Cretaceous
question
A plant is said to be cross-pollinated if __________.
answer
pollen grains are transferred to a flower on a different plant
question
Which of the following is not a gymnosperm?Coconut palmDouglas firGinkgoEphedraSequoia
answer
Coconut palm
question
Which of the following is a conifer?SequoiaCommon juniperLongleaf pineAll of the listed responses are conifers.European larch
answer
All of the listed responses are conifers.
question
Six major crops—wheat, rice, maize, potatoes, cassava, and sweet potatoes—constitute what percentage of all the calories consumed by humans?
answer
80%
question
A pea pod is formed from __________. A pea inside the pod is formed from __________.
answer
an ovary; an ovule
question
Which of the following is enclosed within the pollen wall of a pollen grain?
answer
Male gametophyte
question
In gymnosperms, the seed coat develops from the integument. In angiosperms, the seed coat develops from the __________.
answer
integuments
question
Besides the plant tissue that humans ingest, which angiosperm tissue is most directly important for human survival?
answer
Xylem
question
What significant change occurred on Earth between the Carboniferous period and the Permian period that most likely contributed to the success of the gymnosperms?
answer
The climate became drier and warmer.
question
In which group is the sporophyte stage dominant in the alternation of generations?
answer
All vascular plants
question
The seed coat's most important function is to provide protection for the __________.
answer
sporophyte embryo
question
Which gymnosperm phylum below is characterized by large cones and fern-like leaves and thrived during the Mesozoic?
answer
Cycadophyta
question
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?
answer
They were homosporous.
question
The pollen of conifers is primarily dispersed by __________.
answer
wind
question
At current rates of deforestation, tropical rain forests will be eliminated in __________ years.
answer
200
question
In which phylum is the organism thought to be the world's oldest living tree?
answer
Coniferophyta
question
The dicots are now thought to be in the paraphyletic group, and the majority of dicot species are now placed in the eudicots. Which of the following is a member of a group that was included in the dicots but is now included in the eudicots?
answer
Southern magnolia
question
Which of the following is not a trait characteristic of monocots?
answer
Taproot
question
Dietary supplements and decongestants containing ephedrine have recently become more strongly regulated in the United States. Ephedrine is an extract of a plant belonging to which phylum?
answer
Phylum Gnetophyta
question
The pore in the integuments of an angiosperm ovule through which sperm is delivered is the __________.
answer
micropyle
question
The diploid generation of the plant life cycle always __________.
answer
produces spores
question
A bright pink flower with deep floral tubes will most likely be pollinated by which mechanism?
answer
Birds with long beaks
question
Of the following, which is a difference in how reproduction occurs in gymnosperms compared to angiosperms?
answer
Only the sperm of angiosperms combine with two central cell nuclei to form triploid endosperm.
question
In addition to seeds, what is a trait unique to seed plants?
answer
Pollen
question
In flowers, pollen is produced in the __________.
answer
anther
question
Which of the following contains multiple gymnosperm ovules?
answer
ovulate cone
question
Which of the following is found inside a pollen grain?
answer
the male gametophyte
question
What are the main components of a mature gymnosperm seed?
answer
Food supply, seed coat, embryo
question
Can you identify the ploidy of different structures?
answer
The megaspore is haploid.The embryo is diploid.The gametophyte generation is haploid.The sporophyte generation is diploid.
question
After fertilization, the ovule develops into a seed. Can you match the parts of the ovule with the corresponding parts of the seed?
answer
After fertilization of the ovule, the megaspore develops into the food supply of the mature seed.After fertilization of the ovule, the integument develops into the seed coat.After fertilization of the ovule, the fertilized egg develops into the embryo of the mature seed.
question
Ovules are found within structure _____.
answer
B
question
Which of these is unique to flowering plants?
answer
double fertilization
question
The male gametophytes of flowering plants are also referred to as _____.
answer
pollen grains
question
In flowering plants the integuments of the ovule develop into a(n) _____.
answer
seed coat
question
A carpel is composed of _____.
answer
stigma, style, and ovary
question
A stamen consists of _____.
answer
anther and filament
question
In angiosperms, pollination is the transfer of pollen grain to the _____ of a flower on the same plant or another plant of the same species.
answer
stigma
1 of 42
question
Which of the following is not an advantage seeds provide over spores?Protective integumentMulticellularityAsexual reproductionLong period of dormancyStored food supply
answer
Asexual reproduction
question
Which example below is evidence provided by living gymnosperms of an evolutionary transition between seedless and seed plants?Some gymnosperms do not have reduced gametophytes.The sperm of some gymnosperms have flagella.In gymnosperms, two sperms are discharged into the pollen tube.The sperm of gymnosperms do not require water or mobility for fertilization.Gymnosperms only have one integument.
answer
The sperm of some gymnosperms have flagella.
question
Which of the following is a trait possessed by all angiosperms?Pollination by animalsDouble fertilizationSeeds dispersed by animalsFree-living gametophyteSeeds produced in ovulate cones
answer
Double fertilization
question
Which of the following best describes the function of fruits?Depending on the plant species, any of the listed responses are possibleProtection and dispersal of seedsTo distract herbivores from eating the leavesFood storage for the plant to use over the winterReward for pollinators
answer
Protection and dispersal of seeds
question
Angiosperms are thought to have originated in which period?
answer
Cretaceous
question
A plant is said to be cross-pollinated if __________.
answer
pollen grains are transferred to a flower on a different plant
question
Which of the following is not a gymnosperm?Coconut palmDouglas firGinkgoEphedraSequoia
answer
Coconut palm
question
Which of the following is a conifer?SequoiaCommon juniperLongleaf pineAll of the listed responses are conifers.European larch
answer
All of the listed responses are conifers.
question
Six major crops—wheat, rice, maize, potatoes, cassava, and sweet potatoes—constitute what percentage of all the calories consumed by humans?
answer
80%
question
A pea pod is formed from __________. A pea inside the pod is formed from __________.
answer
an ovary; an ovule
question
Which of the following is enclosed within the pollen wall of a pollen grain?
answer
Male gametophyte
question
In gymnosperms, the seed coat develops from the integument. In angiosperms, the seed coat develops from the __________.
answer
integuments
question
Besides the plant tissue that humans ingest, which angiosperm tissue is most directly important for human survival?
answer
Xylem
question
What significant change occurred on Earth between the Carboniferous period and the Permian period that most likely contributed to the success of the gymnosperms?
answer
The climate became drier and warmer.
question
In which group is the sporophyte stage dominant in the alternation of generations?
answer
All vascular plants
question
The seed coat's most important function is to provide protection for the __________.
answer
sporophyte embryo
question
Which gymnosperm phylum below is characterized by large cones and fern-like leaves and thrived during the Mesozoic?
answer
Cycadophyta
question
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?
answer
They were homosporous.
question
The pollen of conifers is primarily dispersed by __________.
answer
wind
question
At current rates of deforestation, tropical rain forests will be eliminated in __________ years.
answer
200
question
In which phylum is the organism thought to be the world's oldest living tree?
answer
Coniferophyta
question
The dicots are now thought to be in the paraphyletic group, and the majority of dicot species are now placed in the eudicots. Which of the following is a member of a group that was included in the dicots but is now included in the eudicots?
answer
Southern magnolia
question
Which of the following is not a trait characteristic of monocots?
answer
Taproot
question
Dietary supplements and decongestants containing ephedrine have recently become more strongly regulated in the United States. Ephedrine is an extract of a plant belonging to which phylum?
answer
Phylum Gnetophyta
question
The pore in the integuments of an angiosperm ovule through which sperm is delivered is the __________.
answer
micropyle
question
The diploid generation of the plant life cycle always __________.
answer
produces spores
question
A bright pink flower with deep floral tubes will most likely be pollinated by which mechanism?
answer
Birds with long beaks
question
Of the following, which is a difference in how reproduction occurs in gymnosperms compared to angiosperms?
answer
Only the sperm of angiosperms combine with two central cell nuclei to form triploid endosperm.
question
In addition to seeds, what is a trait unique to seed plants?
answer
Pollen
question
In flowers, pollen is produced in the __________.
answer
anther
question
Which of the following contains multiple gymnosperm ovules?
answer
ovulate cone
question
Which of the following is found inside a pollen grain?
answer
the male gametophyte
question
What are the main components of a mature gymnosperm seed?
answer
Food supply, seed coat, embryo
question
Can you identify the ploidy of different structures?
answer
The megaspore is haploid.The embryo is diploid.The gametophyte generation is haploid.The sporophyte generation is diploid.
question
After fertilization, the ovule develops into a seed. Can you match the parts of the ovule with the corresponding parts of the seed?
answer
After fertilization of the ovule, the megaspore develops into the food supply of the mature seed.After fertilization of the ovule, the integument develops into the seed coat.After fertilization of the ovule, the fertilized egg develops into the embryo of the mature seed.
question
Ovules are found within structure _____.
answer
B
question
Which of these is unique to flowering plants?
answer
double fertilization
question
The male gametophytes of flowering plants are also referred to as _____.
answer
pollen grains
question
In flowering plants the integuments of the ovule develop into a(n) _____.
answer
seed coat
question
A carpel is composed of _____.
answer
stigma, style, and ovary
question
A stamen consists of _____.
answer
anther and filament
question
In angiosperms, pollination is the transfer of pollen grain to the _____ of a flower on the same plant or another plant of the same species.
answer
stigma