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8.3 factors affecting photosynthesis
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Plants only need a few elements to thrive, which are water, air, nutrients, and sunlight. Sunlight is beneficial to a plant’s health because it gives off different types of UV rays that help a plant prosper. These UV rays can be either beneficial or harmful to plants. The intensity of these rays are dependent on 6 different elements: geography, altitude, time of year, time of day, weather conditions, and reflection. These components contribute to the amount of UV rays that are being absorbed by the plants. These factors vary how well a plant can grow while artificial light sources give a more controlled set of UV rays that are being transmitted to the plant. Some artificial light sources that are used are incandescent, fluorescent, LED, and …show more content…
This form of radiation is measured on a scale called the electromagnetic (EM) spectrum. There are three different types of UV rays: UVA; has the longest wavelength, UVB, and UVC; has the shortest wavelength (Center for Devices). UVA and UVB rays are transmitted through the atmosphere while UVC and some UVB rays are absorbed by the Earth’s ozone layer. There are many factors that contribute to the amount UV rays that are transmitted: geography, altitude, time of year, time of day, weather conditions, and reflection (Center for Devices). The closer you are to the sun, the stronger the UV rays, for example, if you are at the equator, the amount of UV radiation is the strongest. Higher altitudes have greater UV radiation exposure due to the thinner atmosphere. During summer, there is more UV radiation because the sun is in a more direct angle. The time of day when UV rays are most intense is noon, when the UV rays have the least amount of distance to travel. This amount increases during summer months. Even during cloudy weather, UV rays are being transmitted, increasing the risk of damage due to ignorance. UV rays can also be reflected off of surfaces like snow, sand, grass, and water. There are many factors contributing to the amount of UV rays that are transmitted into the Earth’s …show more content…
Sunlight is the preferred source of a plant’s energy because it emits all the elements that are needed by plants. Artificial lights can only produce a limited amount of the required components due to some restrictions of technology. Some lights can even damage the plants due to an intense amount of heat that is produced. Sunlight actually helps plants by helping them build up a resistance by making them produce a sunscreen-like substance, making their smell, taste, color, and resistance to disease increase. Sunlight is not a constant source due to changes in the weather, but artificial lights are constant as they do not rely on perfect conditions to reach plants. The effect that artificial light has on plants also depends on the type of bulb that is used, which vary in prices, heat, and its replication of natural sunlight. Although sunlight has all of the essential elements that allows a plant to photosynthesize, artificial lights give some of the same benefits and are more reliable.
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It can be concluded that chloroplast is responsible for photosynthesis, with blue light forming the highest rate of photosynthetic activity. The widespread use of coloured netting in the future could result in indoor plant growth that is unreliant on weather, and the ease of the production of crops with the desirable phenotypes. However, future research is still required to eradicate any unknown data and determine plant responses in relation to wavelength
The light released by the sun consists of three frequency bands of radiation: infrared, visible and ultraviolet. Out of the three frequency bands, the ultraviolet light is damaging to most humans. Ultraviolet (UV) radiation divided into three categories: UVA, UVB, and UVC. UVA radiation passes through the skin without burning the surface layers. These rays can penetrate to a depth of 0.04 inches and causes damage to cell membranes and the immune system. UVA radiation has been linked to skin cancer, early aging and wrinkling of the skin. UVB radiation is responsible for the painful red burn people get after a long period of exposure to the sun. UVB rays also cause skin cancer and damage to the cornea and lens of the eye. The third category, UVC radiation, is generally absorbed by the Earth’s atmosphere and is not considered harmful.
Moreover, a future experiment is to determine the effect that the distance between the lamp and the solution has on the rate of photosynthesis. Several experiments with a similar setup to this experiment that vary the distances between the lamp and solution could be used to test this.
The substance that absorbs sunlight is chlorophyll, which is mainly contained in chloroplasts. This energy is used to convert carbon dioxide (CO2) and water into sugars. This conversion creates the waste product oxygen, which is used by humans for breathing. Without being able to photosynthesise plants will stop growing and die. In a plant growing in the dark the chlorophyll will slowly be destroyed causing them to use their food reserves.
Scientists have performed many different tests and studies to learn more about high exposure to UV. Close observation of cells have shown that sunlight, natural or artificial, can cause mutations or DNA damage in cells. This can lead to further damage which will then be passed down through generations. Another study scientists perform is on animals. Scientist will expose your typical lab animals to UV rays, and this test typically results in skin cancer on the animal. These studies have been performed with UVA, UVB, and UVC, and they have all proven
1. Would you illuminate your house plants with a green light bulb? Why or why not?
Light bulbs have helped American agriculture grow because they are currently used to keep small animals, like baby chickens, warm. Doing this can keep the baby chicken alive without its mother to keep it warm. We are now allowed to buy chickens and raise them easier and more efficiently.
Devlin, Robert M. and Allen V. Barker. Photosynthesis. New York, Van Nostrand Reinhold Company, 1971.
The second part of this lab deals with photosynthesis. This lab has several experiments. In the first experiment students will learn about the effects that different colored test tubes have on photosynthesis in elodea sprigs.
Each plant species has a unique pattern of resource allocation that is genetically determined but not fixed. Plants can adjust there allocation pattern when they experience different environments and the presence of other species. Phenotypic plasticity goes hand in hand with resource allocation as well. When a plant has to adjust itʻs resource allocation, sometimes it uses itʻs resources to help the plant grow different characteristic so that the plant can have a greater chance of living in the environment. For example, if a plant from an environment that does not experience wind on the regular basis enters a new environment that has a lot of wind the plant may change itʻs resource allocation and spend more of itʻs resources growing deeper
During the following lab, an aquatic plant was covered with a funnel and was placed underwater inside a beaker, with a graduated cylinder (submerged in water) was placed over the neck of the funnel. This lab tested out which source of light which is the independent variable would allow the aquatic plant to produce the most bubbles (dependent variable) and photosynthesize the fastest. This is clearly displayed because when photosynthesis is produced underwater it appears in the form of bubbles inside the water. These bubbles will travel up through the funnel and displace the water in the graduated cylinder. The dependent variable was tested by placing the four, 5cm aquatic plants in the beakers directly in front of the sources of light and observing how many bubbles were produced within the period of 10 minutes and how much water was displaced by the oxygen bubbles. The beaker in front of the light source with the most bubbles produced and with the most displaced water performed photosynthesis faster than all the other light sources. The sources of light used for this lab were sunlight, florescent, red, and yellow lamp lights, and
Sunlight fuels the planet and photosynthesis converts that solar energy into energy that plants transfer into the food chain. Photosynthesis provides plants with sugars and plant proteins that are important for animals as well as for human agriculture. Most people know the general idea behind it, but there are so many complicated processes that make up the entirety of photosynthesis. Different aspects of photosynthesis, the photosystems, and the photosynthetic pathways are still studied today because not everything about how they work and operate is known.
Light is a very important factor in the rate of photosynthesis, in my project I am going to test that plants do need light in order to photosynthesise. It will be very interesting to see how light will influence the rate of photosynthesis in plants and what will happen if they do not get the required light in order to produce starch .
Anyone can attest to the positive effects of sunlight, but it doesn’t just help the plants grow, it is necessary to us as human beings. Its effects go far beyond just brightening your mood or giving you a beautiful day at the beach. The amount of sun we are exposed to can have profound effects. Sunlight is necessary for good mental health. It keeps our hormones balanced, affects our daily motivation, and changes our perspectives on the different aspects of life all together. Furthermore, it has a dramatic effect on us physically by keeping our immune system at its best and giving our bodies essential vitamins that we could not live without. The main point is sunlight has a direct effect on a person’s mental wellbeing, physical health, and overall quality of life
Photosynthesis is the process in which living cells from plants and other organisms use sunlight to produce nutrients from carbon dioxide and water, the image below “Diagram of photosynthesis 1,” helps show this process. Photosynthesise generally creates oxygen as a by-product through the use of the green pigment, chlorophyll, found in the plant that helps this reaction occur. “Photosynthesis provides us with most of the oxygen we need in order to breathe. We, in turn, exhale the carbon dioxide needed by plants,” (factmonster,2017). This is able to show us why photosynthesis is so greatly needed to occur through plants in order to give one another essentials needed for continuity of life. “Plants perform photosynthesis because it generates the food and energy they need for growth and cellular respiration,” (photosynthesieeducation, 2016).