Objectives:
To determine the active or inactive in the xylem and phloem are in the celery.
Devices and materials:
-Celery
-Water
-Red food coloring
-Former bottle
Work Procedures:
Steps 1:Place celery stem,with its leaves intact in a beaker of coloured water as in figure.
Steps 2:Place a second stem of about the same weight but with all its leaves remove in another beaker of coloured water
Steps 3 :After 20 minutes,remove both stalks and cut the stems at regular intervals too see how far the coloured water had risen
Experiment :
Place celery stem,with its leaves intact in a beaker of coloured water as in figure.
Place a second stem of about the same weight but with all its leaves remove in another beaker of coloured water.
After 20 minutes,remove both stalks and cut the stems at regular intervals too see how far the coloured water had risen
Results of experiment:
My experiment worked, because the xylem and phloem to work very well because the celery that I input into the red solution works well immersed in a solution of celery red color shows in the trunk if we split into 2 red and it shows Xylem tissue contained in the timber plants . functions to channel water from the root or bottom of the plant toward the top of the plant, although not all stem red inside but only partially affected by the red-colored solution and phloem tissue also helps to work.Xylem tissue Phloem is at the bark of a substance serves to channel results of food to all parts of plant photosynthesis
Conclusion :
Plants are living things that we do not look like a living thing because he can not move. They did not have tools such as foot and hand motion contained in animals and humans, but their organs are very complex to learn. There are some plants that have been fully developed into complete plants that have leaves, roots, stems, flowers and fruit. There are also plants that do not have some of these organs. However, in each of these plants there must be the most important transportation network consisting of xylem and phloem. Here, I will explain how important they are for the life of a plant and also how they contribute to fetch water from the soil and then spread to all parts of the plant so that all parts of plants to develop optimally.
First of all, xylem tissue has two functions in the plant. The first function is to transport water and minerals from the soil into the stem and leaves. The second function is to support the plant xylem it self so that it is not easy to fall or collapse. Xylem actually shaped the long columns in the center empty. Tubular columns have from plant roots to the leaves of plants even though they are very thin. Therefore, the xylem and phloem can only be examined through a microscope. The middle column is part of a continuous and never broken even though the plant has many branches. To strengthen the xylem, the wall columns have substance called lignin. Xylem tubes are empty and this ongoing task easier xylem to transport water and minerals as well so that none of them are stuck in certain parts of the cell (protoplasm). In addition, the presence of lignin also strengthens the plant so he would not easily collapse and can stand upright.
The second network was instrumental in the transport process in plants is phloem. Phloem transport sugar sucrose and amino acids from the organs of green plants, especially leaves, to other parts of the plant. Different from the xylem, phloem have cells called sieve tube cells, and the transport sugar sucrose and amino acids can be performed via diffusion and active transport from cell to cell in the phloem. Therefore, these foods can reach the organs of plants in a very short time so that they can perform respiration and grow.
Absorption of water from the soil to the top of the plant has meant that these plants have to resist the force of gravity which always lead to objects falling down. However, the plant managed to do that. The key is that these plants using root pressure, energy capillaries, and also the pull of transpiration. But the plants are very high, which plays the most important is the pull of transpiration. In this process, when water evaporates from mesophyll cells, then the fluid in the mesophyll cells will become increasingly saturated. These cells will draw water through osmosis from cells located deeper in the leaf. These cells will eventually attract the necessary water from the xylem tissue that is continuous column from the root to the leaves. Therefore, the water can then continue to be taken from the root to the leaves against the direction of gravity, so the process is continuously ongoing. The process of evaporation of water from leaf mesophyll cells we call the process of transpiration. Accordingly, the taking of water in this way we would call with the pull of transpiration and root for continually absorb water from the soil and transpiration continues to occur, water will continue to be transported to the top of a plant
Transpiration process is in addition lead to the withdrawal of water against the force of gravity, can also cool the plants that are constantly in the sun. They will not easily die by fire by the heat of the sun's heat because through the process of transpiration, evaporation occurs and the evaporation of water will help lower the temperature of the plant. In addition, through the process of transpiration, plants will also continue to get enough water to perform photosynthesis for survival of plants can be kept secure.
Tidak ada komentar:
Posting Komentar