What has thick secondary cell walls usually strengthened with lignin?
A) parenchyma cells
B) collenchyma cells
C) sclerenchyma cells
D) water-conducting cells
Correct Answer:
Verified
Q16: What is a function of roots?
A)absorbing water,
Q17: What cell type provides support in growing
Q18: What structure is a stem modification for
Q19: The _ is the selective barrier of
Q20: What is the waxy coating secreted on
Q22: What contains the developing egg and cells
Q23: A homeowner uses a nail to hang
Q24: A plant grows taller through _, which
Q25: In which structure do pollen grains develop?
A)stamen
B)sepal
C)filament
D)anther
Q26: A tree grows wider each year because
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