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Mr. Walls CFCC BIO 112 Chapter 21 Questions and Answers 100% correct
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Mr. Walls CFCC BIO 112 Chapter 21
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Mr. Walls CFCC BIO 112 Chapter 21What is the role of chlorophyll in plants? - answer Chlorophyll captures solar energy to produce plant energy
Certain cells of sporophytes undergo meiosis to produce haploid reproductive cells called _____. - answer Spores
What is the reason that all life on land depends on plants? - answer Plants are able to manufacture food from sunlight
Green plants are able to convert water and carbon dioxide into sugar and store it as _____. - answer Starch
The ancestors of modern plants were probably aquatic. What is an important advantage
of being aquatic? - answer Access to nutrients in solution
Stomata are pores found in the leaves and stems of plants. What is their purpose? - answer Stomata open to allow gas exchange and close to prevent the loss of water
As plants moved from water onto land, how were they able to compensate for the lack of water? - answer They evolved conducting cells to transport nutrients and water to all parts of the plant
What name is given to a widespread group of plants that is characterized by especially well-protected and well-provisioned embryos and by waterless dispersal of sex cells? - answer Seed plants
Which of the following is considered to be a vascular plant? - answer Ferns
What was the ancestor of modern-day vascular and nonvascular plants? - answer Ancestral green alga
Which group of plants does the following define: The gametophyte is dominant and the sporophyte develops from a zygote. - answer Nonvascular plants
Which of the following describes the way a seedless vascular plant reproduces? - answer They propagate by producing spores What is the major distinguishing characteristic between nonvascular plants, seedless vascular plants, and seed plants? - answer Seed plants produce pollen and seeds
Pollen grains are dispersed by wind or animals to fertilize egg cells. Why is this an advantage? - answer Water is not needed for sperm to swim to the egg
Which of the following is an angiosperm? - answer Fruit trees
Which of the following represents the sporophyte in the life cycle of a pine tree? - answer The tree itself
What is found at the base of the woody scales of a female conifer cone? - answer Two ovules
In a flower, female gametophytes develop from ovules within a structure called the ovary; male gametophytes (pollen) are formed inside a structure called the _____. - answer Anther
What is the purpose of seeds in an angiosperm maturing in fruit? - answer To entice an animal to eat the fruit and consequently disperse the seeds in the fruit
Why are conifers often called "evergreens"? - answer They retain their green leaves throughout the year
The first cell after fertilization is a(n): - answer Zygote
What are the products of photosynthesis? - answer Sugars and O2
Pollen and seeds evolved in response to: - answer Dry land environments
In mosses gametes are produced by _____; in ferns gametes are produced by _____. - answer Mitosis, mitosis
Which of these structures is diploid? - answer Sporophyte
Where do fern antheridia develop? - answer On the underside of the gametophyte
The conspicuous part of a fern plant is a _____. - answer Diploid sporophyte
Which of these characteristics is shared by algae and seed plants? - answer Chloroplasts
Why do mosses and liverworts need to live in a moist environment? - answer Reproduction
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