Ap Biology Lab Write Up: Transpiration in Plants Essay Example
Adriana Rempson
Mrs. Steeger
AP Biology-7
10 October 2012 Transpiration in Plants
Abstract: Our group wanted to see how transpiration would happen in plants when they were in different environments. The different environments we used were humidity and room environments. We measured transpiration using the whole plant method. Our results showed that the plants in a humid environment had greater transpiration rates than the plants in the room environment.
Introduction: Pants absorb and transport water, nutrients, and ions from the surrounding soil via osmosis, diffusion, and active transport. once water and dissolved nutrients have entered the root xylem, they are transported upward to the stems and leaves as part of the process of transpiration, with a subsequent loss of water due to evaporation from the leaf surface. Too much water loss can be detrimental to plants; they can wilt and die (AP Bio Big Idea 4).
The transport of water upward from roots to shoots in the xylem is governed by differences in water potential, with water molecules moving from an area of high water potential to an area of low water potential. The movement of water through a plant is facilitated by osmosis, root pressure, and the physical and chemical properties of water. Transpiration creates a lower osmotic potential in the leaf, and the TACT mechanism describes the forces that move water and dissolved nutrients up the xylem (AP Bio Big Idea 4). Our controlled group was our plant that we left in a room environment. Our experimental group was the plant that we put in humidity. The purpose was to find how transpiration works in plants in different circumstances. We also wanted to see if transpiration caused plants to lose mass.
Our experimental hypothesis is: If plants are in a humid environment, they will transpire more than plants in a room environment.
Materials and Procedures:
Our materials were:
Chinese Cabbage, a clear container, graph paper, a pencil, a scale, a
Mrs. Steeger
AP Biology-7
10 October 2012 Transpiration in Plants
Abstract: Our group wanted to see how transpiration would happen in plants when they were in different environments. The different environments we used were humidity and room environments. We measured transpiration using the whole plant method. Our results showed that the plants in a humid environment had greater transpiration rates than the plants in the room environment.
Introduction: Pants absorb and transport water, nutrients, and ions from the surrounding soil via osmosis, diffusion, and active transport. once water and dissolved nutrients have entered the root xylem, they are transported upward to the stems and leaves as part of the process of transpiration, with a subsequent loss of water due to evaporation from the leaf surface. Too much water loss can be detrimental to plants; they can wilt and die (AP Bio Big Idea 4).
The transport of water upward from roots to shoots in the xylem is governed by differences in water potential, with water molecules moving from an area of high water potential to an area of low water potential. The movement of water through a plant is facilitated by osmosis, root pressure, and the physical and chemical properties of water. Transpiration creates a lower osmotic potential in the leaf, and the TACT mechanism describes the forces that move water and dissolved nutrients up the xylem (AP Bio Big Idea 4). Our controlled group was our plant that we left in a room environment. Our experimental group was the plant that we put in humidity. The purpose was to find how transpiration works in plants in different circumstances. We also wanted to see if transpiration caused plants to lose mass.
Our experimental hypothesis is: If plants are in a humid environment, they will transpire more than plants in a room environment.
Materials and Procedures:
Our materials were:
Chinese Cabbage, a clear container, graph paper, a pencil, a scale, a