Is There a Significant Difference in Height of Bracken (Pteridium Aquilinum) from a Light Area and a Dark Area?

Plants can absorb a number of different length light waves, although not all of them are equal in power or energy which influences a plants growth. Approximately 80% of light that reaches a leaf is absorbed and depending on its wavelength, may excite chlorophyll pigments (reference text book). Plants absorb both red and purple light waves, however because purple wavelengths are shorter, they contain more energy.

Photosynthesis is the conversion of light energy to chemical energy into sugars. It is the process in plants that uses carbon dioxide, water, and sunlight from its surroundings and releases oxygen as a byproduct (6H2O+6CO2+light energy -> C6H12O6+6O2). Photosynthesis is required for plants because they are autotrophs, organisms that make their own food. Plants require a specific environment that is ideal to them to be able to carry out the process. Environmental conditions can either increase or decrease the rate of photosynthesis. Things like colors of light, pH, and temperature can all affect the rate of photosynthesis in plants.

Introduction: Photosynthesis can be defined as a solar powered process that removes atmospheric carbon dioxide and transforms it into oxygen and carbohydrates (Harris-Haller 2014). Photosynthesis can be considered to be the most important biochemical process on Earth because it helps plants to grow its roots, leaves, and fruits, and plants serve as autotrophs which are crucial to the food chain on earth. Several factors determine the process of photosynthesis. Light is one these factors and is the main subject of this experiment. The intensity of light is a property of light that is important for photosynthesis to occur. Brighter light causes more light to touch the surface of the plant which increases the rate of photosynthesis (Speer 1997). This is why there is a tendency of higher rates of photosynthesis in climates with a lot of sunlight than areas that primarily do not get as much sunlight. Light wavelength is also a property of

An example phototropism are the Narneys’ leaves. Similar to sunflowers their leaves move with the sun. Following the sunlight allows them to capture the maximum amount of light energy.

This species is recommended to grow in full light conditions and is considerably susceptible soil fungi and bacteria (McDaniel and Relf 2015). Other plants have been studied and have supported previous hypotheses that wavelength of light affects plant development, but research seems to lack around the subject of sclerenchyma cell growth. However as plant height is somewhat dictated by how strong the structural integrity of a plant is and because sclerenchyma cells are for rigged support in plants (Raven et al. 2013), it is only a logical jump that a taller plant would have more developed sclerenchyma

Photosynthesis is the process by which sunlight is captured by chloroplasts within plant cells and turned into energy. This energy is used to help the plant grow roots, leaves, flowers and fruit.

The “Light Color and Plant Growth Virtual Lab” proved the hypothesis to be incorrect. The hypothesis stated that the green light spectrums would improve the growth of the different plants. Based on the lab, the plants made little to no growth. For example, the average height of the radish under green light was one centimeter. Plants under the blue light spectrum seemed to have the most growth out of all other plants. A radish under the blue light had an average height of 14.6 centimeters. Plants grow faster under blue lights because the wavelengths from the blue light spectrums are shorter and are easier to absorb than the plants with longer wavelengths.

Overall, it is hard to draw conclusions based off the results of this experiment. While the SUPERthrive zinnias did experience a larger growth of 4.5 cm average

There was very little change in plant height in either the control groups or the experimental groups. The control group’s plants both died at seven week while the experimental group lived three weeks longer.

What is the affect of colors of light, red, blue, and green, on the height (cm) of Cynodon dactylon (Bermuda Grass)? If the affect of the colors of light, red, blue, and green, is measured on the height of Cynodon dactylon, red will provide the highest height and blue will provide the lowest. The goal of the experiment is to interpret and record the height (cm) of Cynodon dactylon (Bermuda Grass) when it is exposed to different colors of artificial light, and compare the results to when it is exposed to natural light. With this information, farmers could develop effective and efficient method to grow plants indoors and limit the exposure to uncontrollable environmental factors.

Plants are able of detecting a multitude of stimuli, such as gravity, light or touch. Once a plant has detected a stimulus it will alter their growth plan in order to be in the most relevant location for the uptake of water, nutrients, sunlight and reproductive success. This response of a plant to particular stimuli is referred to as a tropism. For the most part, plant roots will grow downward towards the earth (positive gravitropism), yet plant stems will grow upward (negative gravitropism). Gravity is near constant on the surface of the earth in respect of magnitude and direction, hence plants detect the direction of gravity via a change in angle of certain plant organs. Plants respond to gravity in a three step process: detection, signaling

There are three main factors that affect the rate of photosynthesis; temperature, carbon dioxide concentration and light intensity. Specifically, in order for a plant to photosynthesise at a sufficient rate, there must be enough light as a plant is unable to do this process if there is an inadequate amount. The more photons of light that hit the leaves results in a greater amount of chlorophyll molecules that are ionised and more ATP is produced. Therefore, by increasing the amount of light the plant is receiving there will be a greater amount of energy resulting in a faster rate of photosynthesis. However, if there is an insufficient amount of supply from other factors, then when there is too much light it can affect the rate of photosynthesis.

Plants are an immobile form of life which only react to external stimuli of their environment. These stimuli are called tropism. There are many different types of tropisms that different plants use, phototropism, chemotropism, hydrotropism etc. Plants respond to stimuli in different ways, geotropism is growth affected by gravity, which all plants experience, another is heliotropism which is a response to direction of the sun, the most obvious example of this would be sunflowers which face the sun during different times of the day.

Photosynthesis is a vital process that autotrophs use to transfer light energy into chemical energy. Photosynthesis ultimately produces O2 and glucose. It, like many other biological processes, can be affected by environmental variables. The variable that we altered in the following experiment are intensity, light wavelengths, and pigment types. In order to do this, we conducted three experiments. In the first experiment, we examined the effect of light intensity by placing vials with chloroplasts with DPIP at different light distances in which the results varied. Initially, 30cm away was the most effective for photosynthesis. Then 24cm appeared to be the most effective. Followed by 49cm at minutes 25 and 30. In the second experiment, we

Photosensitivity plays an essential role in the inducing plants to their changing environments to start reproductive stage before complete their life cycle. Flowering defined as process that plant change from the vegetative to the reproductive phase. That transition required external environmental cues, such as photoperiod and temperature, are required to begin plant flowering under the favourite seasonal conditions.