PLANT LAB YAY

Plant Transpiration Data Table
	Normal	With Fan	With Heater	With Lamp
Arrowhead	3.6 mL	7.5 mL	6.6 mL	4.0 mL
Coleus	0.9 mL	6.0 mL	3.9 mL	3.0 mL
Devil’s Ivy	2.9 mL	4.6 mL	4.1 mL	3.0 mL
Dieffenbachia	4.1 mL	7.7 mL	6.0 mL	3.9 mL
English Ivy	1.8 mL	5.1 mL	3.2 mL	2.1 mL
Geranium	1.2 mL	4.7 mL	5.8 mL	2.4 mL
Rubber Plant	4.9 mL	8.4 mL	6.8 mL	4.3 mL
Weeping Fig	3.3 mL	6.1 mL	4.9 mL	2.5 mL
Zebra Plant	4.2 mL	7.6 mL	6.1 mL	3.2 mL

Question 1: Describe the process of transpiration in vascular plants. The stomata which is found underneath leaves evaporates water. The water in the vascular plant is brought up through the roots through evaporation and cohesion in the xylem. The stomata lets out oxygen and takes in carbon dioxide. 

Question 2: Describe any experimental controls used in the investigation.

The experimental control or also called the control group is the plant transpiration without the fan, heater, or lamp.

Question 3: What environmental factors that you tested increased the rate of transpiration? Was the rate of transpiration increased for all plants tested?

The fan, heater, and lamp all increased the rate of plant transpiration but for the rubber plant, weeping Fig, and the Zebra plant, the lamp reduced the rate of ttrasnpiration. This means that heat and wind will increase the rate of transpiration but slight heat, probably more solar energy will reduce the rate for some plantss.

Question 4: Did any of the environmental factors (heat, light, or wind) increase the transpiration rate more than the others? Why?

We found that wind was affected transpiration the most because the water was blown away without even having to evaporate. Heat was the second most importatn factor because it increased the rate of evaporation. 

Question 5: Which species of plant 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 rate. This is probably because it had larger leaves and that increases the surface area which allows for more water to be evaporated. The size of leaves is one of the most important thing in determining the rate of transpiration.

Question 6: Suppose you coated the leaves of the plant with petroleum jelly. How would the plant's rate of transpiration be affected?

Answer:The petroleum jelly would cover the stomamata, therefore preventing water from escaping and decreasing the rate of transpiration.

Question 7: Of what value to a plant is the ability to lose water through transpiration?

Plants need to lose water through transpirati  ground through the xylem. 

Plant Hormones

Ethylene

Ethylene is a plant hormone that encourages ripening. It is created from the plants endoplasmic reticulum and is created relative to the rate at which it is excreted from a plant. It's function is to create create sugar out of starch and acid in order to make fruits taste more delicious. Farmers use ethylene to quickly ripen their fruits
 :D


Auxin

Auxin is a plant hormone that is produced from a plant embryo. It is essential in stimulating plant elongation, stimulatin cell division in the cambium, as well as being essential in differentiation in phloem and xylem. This is used by farmers to have plants grow a lot faster than they usually do and to increase the size of their plants. Auxin is created in the tip of a plant and is then transferred to the dark side of the plant and cell divides. This creates cell elongation in the direction of light.



Abscisic Acid

Abscisic Acid is a plant hormone that saves a plant from dying when under stress. It inhibits plant growth so that when for example, it is without water for a long period of time, will not die but will lay dormant until better conditions arise.

Plant Anatomy

This flower is BRIGHT RED and there seems to be many bean sprout like structures that all coagulate in the middle. At the very center, there seems to be a different structure. These two things probably are the reproductive organs of the plant.

This flower is different in that it was found on a tree. The stem seems very fluffy and it is a very pretty white. 

There is a strange red spot on the flower that intrigues me. There seems to be different pigments on this flower and it also has a very fluffy stem. This may be a pattern. Perhaps it is because it is attempting to reflect light back on itself through tiny filaments.