Plants
By: Collin Loyd-5th period
dichotomous key
1b- Short and wide..........................................................................................................go to 3
2a- curved peddle............................................................................................................go to 4
2b- Not curved peddle.....................................................................................................go to 5
3a- four big peddle surrounding a small peddle..........................................................go to 4
3b- one long stem.............................................................................................................go to 5
4a- light green veins in leaf.................................................................................mandarin tree
4b- rough around the peddle.............................................................................peppermint
5a- tips of peddle are red................................................................................... podocarpus
5b- stem is brown............................................................................................... go to 6
6a- on both sides of stem their is a lot of peddles...........................................Boston fern
6b-triangle shape peddle.....................................................................................go to 7
7a- some parts are red.........................................................................................oregano
tropisms
Positive taxis - all roots grow towards water.
Negative taxis- not all roots grow towards water.
Phototropism- plant grows towards the light.
Positive taxis- plant grows towards the light.
Negative taxis- plant does not grow towards light.
Geotropisms- plant is on its side then roots grow towards gravity and the stem grows away from gravity.
Positive taxis- plant roots grow towards gravity.
negative taxis- roots does not grow towards gravity.
Thigmotropism- plant grows due to touch.
positive taxis- plant grow on a wall.
negative taxis- plant touches wall the grows away from wall.
Hydrotropisms
Forces
root wedging- when plant roots force itself in a solid to break the solid.
Geotropisms- A plant grows away from gravity.
Facts about plants
The equation for photosynthesis is 6CO2 + 6H2O ------> C6H12O6 + 6O
All plants are autotrophic meaning they make their own food.