Wait a second!
More handpicked essays just for you.
More handpicked essays just for you.
Eassy about literature review
Don’t take our word for it - see why 10 million students trust us with their essay needs.
Roots vs gravity Biology Honors Period 6 11/17/2013 Word Count: 1519 Table of Contents Question............................................................................................................3 Purpose.............................................................................................................3 Hypothesis.........................................................................................................3 Materials Needed.............................................................................................3-4 Methods..........................................................................................................4-6 Data and Results..............................................................................................6-8 Conclusion......................................................................................................8-9 Discussion.....................................................................................................9-10 References Cited..........................................................................................10-11 Question: How do roots grow when the direction of gravity changes? Purpose: The purpose of my science fair project is to find out if roots grow differently when their gravity changes. I choose to do this science fair project because I enjoy doing experiments with living and growing objects. Hypothesis: The hypothesis for my science fair project is that the roots of the seed will keep adjusting when the gravity is changed and they will keep growing downward and the stem will keep growing upward. I also think the the more seeds are in one bag, the less they will grow because they are more crowded. ... ... middle of paper ... ...to Gravity."Boundless. N.p.. Web. 31 Oct 2013. . Gardening, National. "Response to Gravity." Learning Garden. N.p., n.d. Web. 31 Oct 2013. . Martin, Brad. "A study of Gravity’s Effects on Plants." The Wonderwheel. N.p., 12 11 1997. Web. 31 Oct 2013. Carlson, Shawn. "Growing Seeds at Less than One G." Scientific American. Vol. 27 #2 Feb. 1996. p. 122-123. Whyte, David. "How Do Roots Grow When The Direction Of Gravity Changes?." Science Buddies. N.p., 5 9 2013. Web. 31 Oct 2013. .
Charles Darwin once compared the root tips of plants to “the brain of one of the lower animals” he even reported electrical signal systems in plants, much like a nervous system. More than a century after Darwin, a scientist named Mancuso discovered the center for the electrical signals, or action potentials, is located in the root tips. Even small plants had nearly 14 million root tips, all acting in a similar way to a nervous system. Humans and most animals have centralized brains, meaning it is all grouped together in one spot, forming what we envision as a brain. Plants may not have a centralized brain like humans, but that doesn’t mean they lack a brain, in fact plants have “decentralized intelligence” distributed throughout them. Since plants cannot react quickly, they have no way of defending themselves against predators, so by scattering the “brain” plants avoid dying off when damaged (Marinelli). The root tips and sensory cells allow plants to feel and react to different stimuli. It is uncertain as to whether plants feel pain, but they do respond to anesthetics and react to being damaged. For example, when a caterpillar eats a plant’s leaf, the plant begins to secrete defensive chemicals. The censor cells react to the damage being done and cause the leaf to secrete chemicals to fend off the predator, as well as repair the
N.p., 29 Mar. 2014. Web. 28 Mar. 2014. "Related Topics. " Plant Science Research : Ozone Effects on Plants.
Carbon dioxide is necessary for plants to carry out the process of photosynthesis, which is an important process because it allows plants to produce glucose, as well as oxygen. Based on evidence from previous experiments, the growth of the plant will reflect the amount of CO2 gas that is present in the environment (O’Leary and Knecht 1986). This means that the plant growth relies on the carbon dioxide in the atmosphere in order to be successful. Therefore, in several cases, it has been noted that when the concentration of CO2 is doubled, the plant growth will similarly increase (Carter et al. 1997). So, it can be concluded that by raising the amount of carbon dioxide in an environment, the surrounding plants will experience an increase in growth.
Acer palmatum has many different varieties that have different colors, leaf shapes, and growth habits. The tree openly pollinates, which means that seeds from a specific cultivar will not be an exact clone of the parent tree. For this reason, propagation f...
As a result of these factors, the flora has adapted to these conditions in a variety of ways including their shape, leaf type, root system, and color. One of the most prominent adapt...
Comparing the Growth of Pea Plants Grown in the Light and in the Dark Aim: To compare the vertical growth and weight gain of pea plants grown in the light and in the dark. Background Knowledge: Photosynthesis forms the basis for this experiment. This is the process by which a plant makes food for itself from the raw materials around it. The energy needed for photosynthesis comes from sunlight, which is the variable for this experiment.
Rising Carbon Dioxide is Great For Plants. (1992, December). Consumer's Research Magazine, 75 (12), p. 25. [Online]. Available: http://insite.palni.edu/WebZ/Authorize:sessionid=0.
Roots was a mini series created in 1977, based on Alex Haley’s family history. The series tells the story of Kunta Kinte, a young boy captured and enslaved by the white man . He is then expected to adapt to the plantation life and obey Master Reynolds. The story also shows the many events that happened in history, such as the Civil wars, slave rebels, and the various acts of emancipation. The many characters in the series each have a significant role that they play in portraying history.
Taking Root, The Vision of Wangari Maathai is a documentary filmed by Lisa Merton and Alan Dater released in April 2008. This movie mainly expresses the intense story of the Kenyan Laureate Wangari Maathai whose simple action of planting a tree grew into a national movement to defend the environment, protect human rights, and defend democracy. Wangari Maathai is also the first environmentalist and the first African female to earn the Nobel Peace Prize.
Two members of the group were instructed to visit the laboratory each day of the experiment to water and measure the plants (Handout 1). The measurements that were preformed were to be precise and accurate by the group by organizing a standardized way to measure the plants. The plants were measured from the level of the soil, which was flat throughout all the cups, to the tip of the apical meristems. The leaves were not considered. The watering of the plants took place nearly everyday, except for the times the lab was closed. Respective of cup label, the appropriate drop of solution was added to the plant, at the very tip of the apical meristems.
The “Fast Plant” experiment is an observation of a plants growth over the span of twenty-eight days. The objective is to observe how plants grow and use their resources throughout the span of their life. In our lab we observed the Brassica rapa, a herbaceous plant in the mustard family which has a short cycle which makes it a perfect plant to observe in this experiment. Like other plants the Brassica rapa must use the resources in the environment to create energy to complete itʻs life cycle and reproduce. By observing the plant it is easy to see in what organ or function the plant is using itʻs energy and resources and if overtime the resources switch to other part of the plants. By conducting this experiment we are able to observe where and how plants allocate their resources throughout their life by harvesting plants at different points in their life.
The plants that we know today as terrestrial organisms were not always on land. The land plants of today can be linked back to aquatic organisms that existed millions of years ago. In fact, early fossil evidence shows that the earliest land plants could have arisen some 450 million years ago (Weng & Chappie 2010). Plants that used to reside strictly in water were able to adapt in ways that allowed them to move onto land. It is speculated the need for plants to move onto land was created by water drying up, causing plants to have less room and pushing them to move onto land. Although the exact cause of plant’s need to move to a terrestrial environment is unclear, it is known that plants had to undergo several adaptations to be able to live on land. These adaptations include: lignin, cellulose, suberin, and changes to plant’s surface, including the formation of a waxy cuticle.
own roots (not just the plant kind), this meant they needed a structure that was different than
Asexual propagation is the process through which reproduction without passage through the seed cycle occurs. The advantages of asexual propagation are that it preserves genetic makeup, propagates seedless plants, disease control, rapid production, the plants are identical, cheaper, faster and easier reducing or avoiding juvenility. The disadvantages of asexual propagation are that it increases disease and insect susceptibility, plants are bulky, and the mother plants could become contaminated. The goal of this experiment was to determine the development of adventitious roots and shoots, and observe these plants over a period of five weeks. Due to auxin being produced in the tip, tip cuttings should root faster than any other cuttings. Auxin is a plant hormone that is responsible for cell elongation and enlargement, root formation, and growth. There are two forms of auxins; phototropism, which is produced in the tip and moves downward on the side away from the light and gravitropism, which is where plant roots grow downward and plant shoots grow upward.(Plant Auxin 201...
The effect of soil salinity in plant growth is part of botany, the study of plants.