Plants Flashcards
1
Q
Aerial roots
A
- clinging air roots
- –short roots that grow horizontally from the stem
- -roots that fasten plants to support
- absorptive air roots
- -absorb moisture from air
2
Q
Adventitious roots
A
- develop in places other than nodes
- form on cuttings and rhizomes
3
Q
Bees
A
attracted to flowers with bright, lively colors, especially blues and yellows (can’t see red)
4
Q
Butterflies
A
have a slender tongue to get pollen, which then sticks to their feet
5
Q
Hummingbirds
A
attracted to red, pinks and oranges. Blossoms are narrowly constricted so that only narrow bills can enter (no landing platform)
6
Q
bats
A
nigh-time pollinators, pollination Saguaro cacti flowers (which have to be in bloom)
7
Q
Chemicals
A
- different chemicals in plants to help them respond
- gravity and light sensing chemicals help sense direction
8
Q
Dormancy
A
period of time when an organism’s growth or activity stops. It helps plants survive freezing temps and lack of water
9
Q
Signs of dormancy
A
- Leaves begin to change color once temps begin to cool
- Leaves begin to stop making chlorophyll
- As the green pigment chlorophyll begins to break down, pigments of orange and yellow become visible while red pigments are being produced.
- Any remaining sugar and water are transported out of leaves
- Leaves fall to the ground an tree is ready for winter