BIO 114 Exam 4 Mary Oswald (Answered) 126
Questions and Correct Answers With Complete
Solution. 100% Correct, Updated Fall 2024/2025.
Open to allow gas exchange and close to decrease water loss
Stomata
In addition to seeds, which of the following characteristics is unique to the seed-producing plant?
Pollen
A botanist discovers a new species of plant in a tropical rain forest. After observing its anatomy and
life cycle, he notes the following characteristics: flagellated sperm, xylem with tracheids, separate to
gametophyte and sporophyte generations with the sporophyte dominant, and no seeds. This plant is
probably most closely related to _____
Ferns
Conifers and pines both have needlelike leaves, with the adaptive advantage of _____
Decreased surface area, reducing water loss
Liverworts, hornworts, and mosses are grouped together as the Bryophytes (nonvascular). Besides not
having vascular tissue, what do they all have in common?
They require water for reproduction
About 450 million years ago, the terrestrial landscape on Earth would have _____
Had non-vascular green plants similar to liverworts forming green mats on rock
Some plants are parasitic. Which of the following represents plants that are wholly dependent on their
hosts?
Holoparasitic
Over evolutionary time, there has been a trend for land plants to shift from:
Megaspores to microspores
According to the fossil record, plants colonized terrestrial habitats _____
In conjunction with fungi that helped provide them with nutrients from the soil
Which of these time intervals, based on plant fossils, came last (most recently)?
Rise and diversification of angiosperms
Stamens, sepals, petals, carpels, and pinecone scales are all _____
Modified leaves
, Green algae differ from land plants in that many green algae _____
Are unicellular
What is the closest living algal relatives of land plants?
Charophytes
Spores and seeds have basically the same function -- dispersal -- but are vastly different because _____
Spores are unicellular; seeds are not
You find a green organism in a pond near your house and believe it is a plant, not an alga. The mystery
organism is most likely a plant and not an alga if it _____
Is surrounded by a cuticle
What adaptations should one expect of the seed coats of angiosperm species whose seeds are
dispersed by frugivorous (fruit-eating) animals, as opposed to angiosperm species whose seeds are
dispersed by other means?
-The seed coat should be able to withstand low pHs
-The seed coat should be resistant to the animals' digestive enzymes
Retaining the zygote on the living gametophyte of land plants ______
Allows it to be nourished by the parent plant
Why have biologists hypothesized that the first land plants had a low, sprawling growth habit?
The ancestors of land plants lack the structural support to stand erect in air
In terms of ecological roles, which of the following groups include primary producers in ecosystems?
-Land plants
-Protists
Which of the following should have had gene sequences most similar to the charophyte (stonewort)
that was the common ancestor of the land plants?
Early bryophytes
As you stroll through a moist forest, you are most likely to readily see a _____
Gametophyte of a moss
Which of the following was a challenge to the survival of the first land plants?
Desiccation
In terms of alternation of generations, the internal parts of the pollen grains of seed-producing plants
are most similar to a ______
Fern gametophyte bearing only antheridia
Questions and Correct Answers With Complete
Solution. 100% Correct, Updated Fall 2024/2025.
Open to allow gas exchange and close to decrease water loss
Stomata
In addition to seeds, which of the following characteristics is unique to the seed-producing plant?
Pollen
A botanist discovers a new species of plant in a tropical rain forest. After observing its anatomy and
life cycle, he notes the following characteristics: flagellated sperm, xylem with tracheids, separate to
gametophyte and sporophyte generations with the sporophyte dominant, and no seeds. This plant is
probably most closely related to _____
Ferns
Conifers and pines both have needlelike leaves, with the adaptive advantage of _____
Decreased surface area, reducing water loss
Liverworts, hornworts, and mosses are grouped together as the Bryophytes (nonvascular). Besides not
having vascular tissue, what do they all have in common?
They require water for reproduction
About 450 million years ago, the terrestrial landscape on Earth would have _____
Had non-vascular green plants similar to liverworts forming green mats on rock
Some plants are parasitic. Which of the following represents plants that are wholly dependent on their
hosts?
Holoparasitic
Over evolutionary time, there has been a trend for land plants to shift from:
Megaspores to microspores
According to the fossil record, plants colonized terrestrial habitats _____
In conjunction with fungi that helped provide them with nutrients from the soil
Which of these time intervals, based on plant fossils, came last (most recently)?
Rise and diversification of angiosperms
Stamens, sepals, petals, carpels, and pinecone scales are all _____
Modified leaves
, Green algae differ from land plants in that many green algae _____
Are unicellular
What is the closest living algal relatives of land plants?
Charophytes
Spores and seeds have basically the same function -- dispersal -- but are vastly different because _____
Spores are unicellular; seeds are not
You find a green organism in a pond near your house and believe it is a plant, not an alga. The mystery
organism is most likely a plant and not an alga if it _____
Is surrounded by a cuticle
What adaptations should one expect of the seed coats of angiosperm species whose seeds are
dispersed by frugivorous (fruit-eating) animals, as opposed to angiosperm species whose seeds are
dispersed by other means?
-The seed coat should be able to withstand low pHs
-The seed coat should be resistant to the animals' digestive enzymes
Retaining the zygote on the living gametophyte of land plants ______
Allows it to be nourished by the parent plant
Why have biologists hypothesized that the first land plants had a low, sprawling growth habit?
The ancestors of land plants lack the structural support to stand erect in air
In terms of ecological roles, which of the following groups include primary producers in ecosystems?
-Land plants
-Protists
Which of the following should have had gene sequences most similar to the charophyte (stonewort)
that was the common ancestor of the land plants?
Early bryophytes
As you stroll through a moist forest, you are most likely to readily see a _____
Gametophyte of a moss
Which of the following was a challenge to the survival of the first land plants?
Desiccation
In terms of alternation of generations, the internal parts of the pollen grains of seed-producing plants
are most similar to a ______
Fern gametophyte bearing only antheridia
