Xylem

Plants require certain substances that are necessary for their survival. These requirements are carbon dioxide, water and mineral nutrients. Mineral nutrients are essential chemical element that are critical for plants to sustain life function and complete their life cycle (Uchida, 2000). These nutrients are classified into two groups micro a macro nutrients. Micronutrients are elements are used in very small amount these include boron, chlorine, cooper, iron, manganese and zinc. While…

I. A Competitive Edge The best races have the best competitors, and angiosperms have certainly been described as having an extra edge. As discussed in the introduction, the fossil record shows that gymnosperms were quickly displaced by angiosperms upon their arrival. Yet despite the number of hypotheses (table 1) put forward to explain this shift in vegetation, gymnosperms’ competitors have not yet been discovered. Among the numerous hypotheses, three are discussed in depth here (summarised in…

Terminology The SPA continuum is defined by the movement of water from the soil to the root through the stem and from the leaf to the atmosphere (Lambers et al 2008). The system which is composed components involving soil, plants leaves’ and roots, xylem and the atmosphere is named the Soil-Plant-Atmosphere system, which represent a pathway for the…

I was in Corn Group A for our posters we presented before Fall break. The two disease topics we covered in corn was Goss’s Wilt and Root Rot Pythium. Impact: Between Goss’s Wilt and Root Rot Pythium I believe the Root Rot Pythium has a much greater impact on a Corn plant. There is a much greater impact because the time of infection is at a much earlier time when the plant is just a seedling and has a slim chance of fighting off the necrotrophic disease. When Pythium attacks the seeding through…

When gardening, there are lots of tasks required to achieve the beautiful desired outcome. Research shows how water distribution is essential to plant growth. Both garden beds at the Chattanooga Girls Leadership Academy need water, but different amounts. In our area, because of climate change, Chattanooga has a rainfall that alternates between flooding, normal, and drought situations. One way to address this issue of the climate-change conditions, is to use a raised bed, which would be conducive…

growth of buds. Cytokinin acts in roots and stems, more specifically the meristems in these regions. Even though cytokinin acts in the growing stems, it is only produced in the roots. The roots cells must produce cytokinin that then travels up the xylem to other regions of growth throughout the plant. The receptors in for cytokinins are most commonly found in the ER. Since the receptors for this hormone are inside the cells, the hormone must be non-polar and small enough to fit across the…

Abstract The investigation was conducted see the effects of salinity on pant life more closely, with series of plants watered with different percentages of salt water. To determine how different salinity levels effect the plants growth, and also observe the other effects, if any, that may occur to the plant. The experiment was set up and each plant was watered with different levels of salinity, and measurements of the height and number of leaves was taken twice a week. The results concluded that…

Importance of photosynthesis The sun is the main and ultimate source of energy for the planet we live on. Many forms of solar radiation exist but the most important form of radiation in biology and for photosynthesis are infared rays, ultraviolet rays and light rays. Photosynthesis is the way in which some specialised bateria and green plants use their chlorophyll to trap light energy and then use this energy to convert carbon dioxide and water to glucose and oxygen. The green colour in plants…

Question: A farmer comes to see you and ask for your help. His corn has low yield. 1. What kind of information you would need to know in order to help the farmer? (5 points) Water When corns were got deficient water. Thus, corns were not substrate for photosynthesis rate and stress. Corns produced less carbohydrates and starch that affect to yield. Root phenotype is long and short .long root is deep in soil for absorption of underground water. Short root is spread wide root at absorption of…

Photosynthesis My group studied the effect of light on photosynthesis in our experiment. Photosynthesis occurs in the chloroplast of the cell. Photosynthesis happens when water is absorbed by the roots of green plants and is carried to the leaves by the xylem, and carbon dioxide is obtained from air that enters the leaves through the stomata and diffuses to the cells that have chlorophyll. In our experiment we tested how different colored lights would affect how fast the rate of photosynthesis…