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WSU Biology 106 Exam Two Questions With 100% Verified Answers.

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  • WSU Biology 106

WSU Biology 106 Exam Two Questions With 100% Verified Answers. Land plants evolved from _____. - answerGreen Algae ________ are the closest relatives of land plants. - answerCharophyceans What are the four key traits land plants share only with charophyceans? - answer1. Structure of flagellate...

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  • October 2, 2024
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  • 2024/2025
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  • WSU Biology 106
  • WSU Biology 106
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WSU Biology 106 Exam Two Questions With
100% Verified Answers.


Land plants evolved from _____. - answer✔Green Algae

________ are the closest relatives of land plants. - answer✔Charophyceans

What are the four key traits land plants share only with charophyceans? - answer✔1. Structure of
flagellated sperm
2. Rose-shaped complexes (cellulose synthesis)
3. Peroxisome enzymes (photorespiration)
4. Phragmoplast
In charophyceans, __________ prevents exposed zygotes from drying out -
answer✔Sporopollenin

Sporopollenin can be found in: - answer✔Charophyceans, spores, and pollen
What five key traits appear in nearly all land plants but are absent in the charophyceans? -
answer✔1. Apical meristems
2. Alternation of Generation
3. Walled spores produced in sporangia
4. Multicellular gametangia
5. Multicellular dependant embryos

Two derived traits that helped land plants survive on land: - answer✔1. Cuticle
2. Secondary Compounds

Land plants can be informally grouped based on the presence of ________. - answer✔Vascular
Tissue
The life cycles of mosses and

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other bryophytes are dominated by the _________ stage. - answer✔gametophyte

Three phyla of bryophytes: - answer✔Hepatophyta (liverworts)
Anthocerophyta (hornworts)
Bryophyta (Mosses)
In all three bryophyte phyla

_________ are larger and longer-living than __________. - answer✔Gametophytes, sporophytes

Gametophyte - answer✔multicellular phase, haploid,
contains a single set of chromosomes

Sporophyte - answer✔(multicellular phase, diploid,
contains a full double set of chromosomes

_______ and other ________ were the first plants to grow tall. - answer✔Ferns, seedless
vascular plants

_______ are dominant in the life cycle of seedless vascular plants - answer✔Sporophytes

What are the two types of tissue vascular plants contain? - answer✔Xylem ( Includes dead cells,
conducts water & minerals)
Phloem ( Living cells, distributes nutrients)
Most seedless vascular plants
are ________, producing one type of

spore that develops into a ________. - answer✔homosporous, bisexual gametophyte
All seed plants
are _________ , having two types of

spores that give rise to _____________________. - answer✔heterosporous, male and female
gametophytes

What are the two phyla for seedless vascular plants: - answer✔1. Lycophyta (rare)
2. Pterophyta (ferns, horsetails)

What is an example of a lycophytes? - answer✔Whisk ferns, horsetails

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