Azolla filiculoides is a small aquatic fern that is typically 1-2 cm tall. How would a botanist distinguish it from a bryophyte?
A. It produces seeds.
B. It has xylem tissue.
C. It has a gametophyte.
D. It has chloroplasts.
Clarify Question
What is the key concept addressed by the question?
What type of thinking is required?
Gather Content
What do you already know about ferns and bryophytes? What other information is related to the question?
Given what you now know, what information is most likely to produce the correct answer?
Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
B. It has xylem tissue.
Clarify Question
What is the key concept addressed by the question?
· This question is highlighting the differences between ferns and bryophytes.
What type of thinking is required?
· You are being asked to take what you already know and use, or apply, it to the identification of a fern versus a bryophyte.
Gather Content
What do you already know about ferns and bryophytes? What other information is related to the question?
· Bryophytes include mosses, liverworts, and hornworts.
· Bryophytes lack vascular tissue.
· Ferns are vascular plants. Choose Answer
Given what you now know, what information is most likely to produce the correct answer?
· Both bryophytes and ferns have gametophytes and chloroplasts, so those features could not be used to distinguish between the two plants.
· Ferns and bryophytes reproduce by spores, not seeds, so this is also not a characteristic that is relevant.
· A key factor that differentiates bryophytes and ferns is the presence of vascular tissue in ferns. This is absent in bryophytes. Since xylem is a component of vascular tissue, it could be used to differentiate a fern from a bryophyte.
Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
· Answering this question correctly depended on your ability to use ferns and bryophytes in a new situation. If you got an incorrect answer, did you remember that vascular tissue includes xylem, or that ferns have vascular tissue but bryophytes do not have vascular tissue? Did you have trouble extending the characteristics of ferns and bryophytes to determine the correct answer?
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Transcription _____
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Fill in the blank(s) with correct word