Thfeaturof horsetails that was useful beforthinvention of modern abrasivcleaners was (were)
A) rhizomes.
B) photosynthetic cells.
C) its value as a source of stomachache medicine.
D) cones at the tips.
E) silica in the stem.
Correct Answer:
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Q47: Which of thfollowing statements is FALSE?
A)The ferns
Q48: Which of thfollowing statements about fertilization in
Q49: In many ferns,
A)gametes are produced after mitosis.
B)asexual
Q50: In seeplants,
A)xylem conveys sugar from the production
Q51: Which of thfollowing plants arwidely plantein cities
Q53: Which of thfollowing will eventually produca maturpollen?
A)megaspore
B)microsporangium
C)microspore
D)microgamete
E)all
Q54: Which of thfollowing arseeplants?
A)cycads
B)ginkgoes
C)conifers
D)angiosperms
E)all of these
Q55: Thseedevelops frothe
A)gametophyte.
B)ovary.
C)ovule.
D)pollen grain.
E)zygote.
Q56: Which of thfollowing plants is NOT a
Q57: What is thnamgiven to th"leaves" of a
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