2 Organizing the diversity of life Diversity the hallmark of life So far about 1.8 million specie have been identified and named by biologists To this date‚ diversity of life includes at least 6300 species of prokaryotes 100000 fungi 290000 plants 52000 vertebrates 1 million insects Researchers add about 1000 more species each year Total number of species range from 10 million to over 100 million Grouping Species: The Basic Idea Taxonomy branch of biology that names and classifies species
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Allelopathy and interference and the effect they have on plant growth. Allelopathy occurs in plants. Many plants produce chemicals that may be harmful or beneficial to other plants. In some cases a species can produce chemicals that can prevent the growth or germination of another species. An example of this is Australian native plants such as Casuarinas and Eucalypts which produce allelochemicals that prevent competition of other plants. This is a form of a defence mechanism in order to survive
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good conditions for plants to grow in. However‚ many plants have had to adapt to survive in the harsh conditions of the tropical rainforest. Some trees grow buttress roots which is when large‚ thick roots grow at the surface of the ground. The tree roots have had to adapt because in the tropical rainforest the nutrients in the ground from decomposed and decaying leaves are near the top of the soil. This is because usually when decomposed matter is on the earth the nutrients soak through into the
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impact the flow of energy and the cycling of nutrients‚ you ask? Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis provides the base for the one way flow of energy through the biosphere. Plants convert energy from the sun into sugars‚ which provide fuel for themselves and for other organisms. Photosynthesis also cycles carbon and oxygen nutrients through the biosphere. Producers are organism
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of rock surfaces by small particles moved by air or water. Abrasiveness also seems to be the one quality currently shared by most political appointees and prominent heads of state. See Ontogenetic Crippling. Absorption: the passage of water and nutrients through cell membranes instead of by direct ingestion. Also refers to how objects convert the solar radiation they receive into heat. Abundance: the
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as small as a tree or a puddle. If you have a terrarium‚ that is an artificial ecosystem. The water‚ water temperature‚ plants‚ animals‚ air‚ light and soil all work together. If there isn’t enough light or water or if the soil doesn’t have the right nutrients‚ the plants will die. If the plants die‚ animals that depend on them will die. If the animals that depend on the plants die‚ any animal that depends on those animals will die. Ecosystems in nature work the same way. All the parts work together
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Earth: A Living Planet To care for our planet we must understand how it opperates. Ecology is the study of interactions of organisms with one another and with their physical surroundings. Scientists who study ecology are called ecologists. Earts is a biosphere‚ or a living globe. The biosphere is that part of the Earth in which life exists. Biospheres include all the areas of land‚ air‚ and water on the planet. The biosphere goes about eight kilometers above the Earth’s surface to as far as eight
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iPod? Lab Purpose: Standardized Tests The purpose of testing the organic nutrients (vegetable oil‚ glucose‚ starch‚ powdered egg white) with each of the different indicators (brown paper towel‚ benedicts‚ iodine‚ biurets) was to determine the color it would turn with positive traces of the nutrient. The purpose of testing just the Distilled H2O was to determine the color it would turn with negative traces. Nutrient in the Different Foods The purpose of testing each of the foods with the indicators
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watered midair. The plants are generally suspended from baskets (similar to those in which strawberries are packaged) at the top of a closed trough or cylinder. With the plants suspended in this manner‚ all essential nourishment can be provided to the roots by spraying them with a nutrient solution. Since the roots are suspended in midair‚ they receive the maximum amount of oxygen possible. This method is also the most nutrient-efficient‚ because you need only provide what the plants require‚ and any
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Table 1a. Biotic components of artificial ecosystem. Biotic Component Habit or Type Number Distribution pattern Physical factors affecting organism Autotrophs Plants Ixora Capsicum frutescens Ananas comosus Dracaena reflexa Basella rubra Papaya Allium cepa Bougainvillea Ocimum basilicum Allium sativum Tarragon Sweet potato Moringa oleifera Taro Pandan Anethum graveolens Cranberry Phaseolus lunatus Plectranthus scutellarioides Curcuma longa shrub herb herb shrub herb tree herb vine herb herb
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