Plants are the producers for an ecosystem. They photosynthesise carbon dioxide and water and produce energy in the form of carbohydrates and other molecules. Photosynthesis requires water, and plants gain water from the soil using mineral ions such as nitrate produced by the nitrifying bacteria. Hydrolysis of ATP releases energy for processes such as active transport of the nitrate ions (and others such as potassium etc) from the soil into root hair cells, a process that lowers water potential and is used to draw water into the plant from the soil. In leaves, photosynthesis involves the photolysis of water, a process that involves the attachment of two electrons to a magnesium ion in chlorophyll and the production of hydrogen ions from the breakdown of water.
Aim: Numerous environmental variables influence plant growth. The aim of this experiment is to determine the optimum atmosphere that a plant has to live in, in order to allow ideal growth. Background information: Plant Growth and distribution are limited by the environment. If any one envrionmental factor is less than ideal it will become a limiting factor in plant growth. Limiting factors are also responsible for the geography of plant distribution.
Plant Growth 1 Running Head: PLANTS AND HOW LIQUIDS AFFECT THEIR GROWTH Plants and How Liquids Affect Their Growth Plant Growth 2 Title page Table of Contents Abstract Acknowledgements Introductions Purpose Problem Hypothesis Variables Materials Procedures Pictures Data Tables Graphs Conclusion Bibliography Table of Contents 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16-17 Plant Growth 3 Plants and How Liquids Affect Their Growth Abstract This experiment is on plants and how different liquids can affect them. The purpose of this experiment is to figure out why different liquids affect plants differently. To do the following experiment you need to 1. Put one plant in each pot of three pots 2. Label one pot A, one pot B & one pot C 3.
HYPOTHESIS My hypothesis is that the stem of each plant will be attracted to the magnet. I think that the magnet will pull the plant's root causing it to grow away from the magnet. I base my hypothesis on my research that states that plants have different kinds of tropisms that attract to different things and cause the plant’s roots to grow downward. I also based it on the fact that magnets attract to some things and repel to other things. EXPERIMENT DESIGN The constants in this study are: How much water the plant receives How much soil is in the pot How much light the plant receives What the growing temperature is When the seed is planted How many seeds are planted in each pot Where each seed is planted How deep each seed is planted How big the pot is How far from the light the pot is The temperature of the water What time the light is turned off and on The manipulated variable is whether a magnet is being used and where the magnet is placed.
Impact of Carbon, Phosphorus, and Nitrogen Cycles Environmental Science Brittney Pinckney 1/25/2013 When it comes to the ecosystems, the cycling impact can change a lot of things when it comes to humans. Humans have important duties when it comes to the atmosphere and keeping the air clean. The air pollution is created by us humans by putting gases, fumes from vehicles and smoke into the air increases the pollution. There are three key elements that are affected by human activates: carbon, phosphorus, and nitrogen. The carbon cycle is a process that transfers carbon among producers, organisms, and consumers to indicate two particular places it comes from and its oceans and the combustion of fossil fuels, which releases CO2 to the atmosphere.
The role of algae was to assimilate plant nutrients and to support bacteria with oxygen. In turn, bacteria were involved in degradation of organic material in
Explain how physical factors influence the distribution of biodiversity shown (10 marks) There are several factors influencing biodiversity including; isolation, age, altitudinal range, productivity The most bio diverse areas are between the tropic of cancer and the tropic of Capricorn. The Philippines, Indonesia and Malaysia have over 3000 plant species per 10000 km2 because they’re isolated as a series of islands which means there are more endemic species on the island as species develop in a more distinct way. The location within the tropics combined with the old age of the countries mean higher biodiversity as the species have more time to develop and evolve. Being within the tropics means there are fewer physical constraints such as light and water which are all in abundance due to rainforest conditions. The Himalayas have over 4000 plant species per 10000 km2 due to the large altitudinal range which means more climatic zones are involved creating more diverse habitats such as rock faces, steep hills.
Plasma carries food from the stomach to cells but carries waste from the cells to the kidneys and intestine. The body needs lots of haemoglobin because it will combine with the gases; oxygen and carbon dioxide. The red cells carry the oxygen in the arteries and capillaries to cells of the body. One function of the blood is to transport materials within plasma and hemoglobin around the body. Plasma contains hormones, nutrients and waste substances.
CnH2nOn + nO2 + ADP + Phosphate (+ oxidizing agent and energy from photon [through electrochemical gradient]) → ATP + nCO2 + nH2O Function Carbohydrates play a variety of extensive roles in all forms of life: Carbohydrates are initially synthesized in plants from a complex series of reactions involving photosynthesis. Store energy in the form of starch (photosynthesis in plants) or glycogen (in animals and humans). Provide energy through metabolism pathways and cycles. Supply carbon for synthesis of other compounds. Form structural components in cells and tissues.
The Action Spectrum and the Absorption Spectrum Introduction: The purpose of this experiment is to learn the rates of photosynthesis under different lights, and the absorbance of photosynthetic pigments in spinach extract. “There would be no biology without photosynthesis. Plant biomass is the food and fuel for all animals. Plants are the primary producers. These amazing organisms are capable of capturing the energy of sunlight and fixing it in the form of potential chemical energy in organic compounds.” (Measuring the rate of photosynthesis) “Light is one of the main factors that affects the rate of photosynthesis, which literally means using light to create something new.” (What Are Three Factors That Affect the Rate Which Photosynthesis Occurs?)