Biology Chapter 21 Flashcards
0
Q
gymnosperms
A
naked seeds
1
Q
angiosperms
A
flowering plants
2
Q
ferns
A
seedless, vascular
3
Q
bryophytes
A
nonvascular
4
Q
cuticle
A
waxy, waterproof layer that coats the parts of a plant exposed to air and prevents water loss
5
Q
nonvascular plants
A
EX. mosses and liverworts
- do not have true roots, leaves or stems
- have rhizoids
6
Q
rhizoids
A
long, thin strands of cells that attach a plant to the soil
7
Q
vascular plants
A
- 90% of modern plants
- absorb water through roots
- photosynthesis in leaves
- contains pores that exchange oxygen to carbon dioxide
8
Q
guard cells
A
determine the aperture of the pore
9
Q
stems
A
support leaves in order to trap light energy
10
Q
lignin
A
made cell walls harder, allowed taller growth
