Data:
| Plant type | Normal (mL) | Fan (mL) | Heater (mL) | Lamp (mL) |
| Arrowhead |
3.6
|
7.5
|
6.6
|
4
|
| Coleus |
0.9
|
6
|
3.9
|
3
|
| Devil's Ivy |
2.9
|
4.6
|
4.1
|
3
|
| Dieffenbachia |
4.1
|
7.7
|
6
|
3.9
|
| English Ivy |
1.8
|
5.1
|
3.2
|
2.1
|
| Geranium |
1.2
|
4.7
|
5.8
|
2.4
|
| Rubber Plant |
4.9
|
8.4
|
6.8
|
4.3
|
| Weeping Fig |
3.3
|
6.1
|
4.9
|
2.5
|
| Zebra Plant |
4.2
|
7.6
|
6.1
|
3.2
|
1. Describe the process of transpiration in vascular plants.
The process of transpiration occurs when vascular plants releases excess moisture and gains nutrients.
2. Describe any experimental controls used in the Investigation.
Time stayed constant in every single experiment of one hour.
3. What environmental factors that you tested increased the rate of transpiration? Was the rate of transpiration increased for all plants tested?
The environmental factors we tested were heat, wind, temperature and light. The rate of transpiration indeed increased at different times for every plant tested.
4. Did any of the environmental factors (heat, light, or wind) increase the transpiration rate more than the others? Why?
Wind had the most effect on the transpiration rate than other environmental factors, because winds could blow the water of leaves quickly or dry them up. The process of osmosis would then occur because the leaf would release water.
5. Which species of plants that you tested had the highest transpiration rates? Why do you think different species of plants transpire at different rates?
The Rubber Plant had the highest transpiration rates possibly because the environment they naturally grow in calls for more transpiration to balance the water.
6. Suppose you coated the leaves of a plant with petroleum jelly. How would the plant's rate of transpiration be affected?
There wouldn't be any transpiration because the jelly would cover the stomata's of the plant.
7. Of what value to a plant is the ability to lose water through transpiration?
Transpiration helps the plant achieve homeostasis in temperature as well as the transportation of nutrients from roots to stem. It also helps the photosynthesis process of the plant.
