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1.1 The study of life Read Online
Viewed from space, Earth offers no clues about the diversity of life forms that reside there. The first forms of life on Earth are thought to have been microorganisms that existed for billions of years in the ocean before plants and animals appeared. The mammals, birds, and flowers so familiar to us are all relatively recent, originating 130 to 200 million years ago. Humans have inhabited this planet for only the last 2.5 million years, and only in the last 200,000 years have humans started looking like we do today.
Chapter 25: Seedless Plants MCQ Multiple Choices Questions Quiz Test Bank
25.1 Early Plant Life
25.2 Green Algae: Precursors of Land Plants
25.3 Bryophytes
25.4 Seedless Vascular Plants
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Question: Which of the following traits of land plants allows them to grow in height?
Choices:
alternation of generations
waxy cuticle
tracheids
sporopollenin
Question: A plant in the understory of a forest displays a segmented stem and slender leaves arranged in a whorl. It is probably a ________.
Choices:
club moss
whisk fern
fern
horsetail
Question: The land plants are probably descendants of which of these groups?
Choices:
green algae
red algae
brown algae
angiosperms
Question: Which of the following structures is not found in bryophytes?
Choices:
a cellulose cell wall
chloroplast
sporangium
root
Question: Alternation of generations means that plants produce:
Choices:
only haploid multicellular organisms
only diploid multicellular organisms
only diploid multicellular organisms with single-celled haploid gametes
both haploid and diploid multicellular organisms
Question: Why do mosses grow well in the Arctic tundra?
Choices:
They grow better at cold temperatures.
They do not require moisture.
They do not have true roots and can grow on hard surfaces.
There are no herbivores in the tundra.
Question: Stomata appear in which group of plants?
Choices:
Charales
liverworts
hornworts
mosses
Question: The chromosome complement in a moss protonema is:
Choices:
1n
2n
3n
varies with the size of the protonema
Question: Which one of these characteristics is present in land plants and not in Charales?
Choices:
alternation of generations
flagellated sperm
phragmoplasts
plasmodesmata
Question: What characteristic of Charales would enable them to survive a dry spell?
Choices:
sperm with flagella
phragmoplasts
sporopollenin
chlorophyll a
Question: Microphylls are characteristic of which types of plants?
Choices:
mosses
liverworts
club mosses
ferns
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