Data Analysis Does radiation affect the growth of seeds? If‚ plant seeds are exposed to microwave radiation‚ then the seeds will grow less than how a seed is usually grown. The independent variable was the amount of microwave radiation the seeds receive. The dependent variable was the growth of the plant seeds. Control variables were the amount of water (30 mL at a time)‚ the amount of light (11 hours each day)‚ and the amount of seeds. The control group was the non-microwaved seeds. The experimental
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as 60 percent over the past three decades. Authors of the study analyzed 8‚000 populations of 2‚500 species‚ as well as global changes in water consumption and land use. According to the latest information‚ it could be that half of the total plant production and most of the animals worldwide contribute to the wellbeing of just one species - mankind. The exploitation of nature’s resources occurs when we consume more than can be replaced naturally. For example this happens when we cut trees down
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Ecology Pyramids 1. a. Sunlight b. 3190000kcal per square meter per year 2. 3. a. .8% b. Photosynthesis 4. By eating the organisms in the previous level 5. 400o0 kcal 6. 7. 8. 90% of energy is lost as heat as it is transferred through trophic levels 9. .6% 10. .09% 11. Only a tiny fraction of the original energy remains. The biomass would have to increase substantially if this system were to support another trophic level beyond the hawk 12. Since little energy is available for a single
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our earth that shares the same species‚ climate‚ animals‚ and plants. There are actually about 150 different classified biomes today. The main biomes are Marine‚ Tundra‚ Desert‚ Savannah‚ Grassland‚ Tropical Rain Forest‚ Deciduous Forest‚ and Coniferous Forest. 4. What is an ecosystem? An ecosystem includes all the abiotic factors in addition to the community of species that exists in a certain area. Human populations depend on plants and animals for much of their food‚ medicines‚ clothing‚ and shelter
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Chapter 1 : Nutrition in Plants Fill in the blanks : 1. The components of food which are necessary for our body are called _______________ 2. Green plants synthesise their own food themselves by the process of __________________. 3. ______________________ is the mode of taking food by an organism and its utilization by the body. 4. Complex chemical substances such as ______________ are the products of photosynthesis. 5. ___________________ gas is produced during photosynthesis. 6. Organisms
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Basic Ecological Concept Levels of Organization Cells- are composed of Cell Membrane‚ Nucleus and Protoplasm. Tissue-is an aggregation of cells performing a common function or functions. Organs- is the aggregation of tissues usually forming a definite shapes‚ and performing a definite function within an organ system. Organ System-is a group of organs that perform coordinated functions together to keep the organism alive and functioning well. The scope of the biology includes the study of all
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Compare and Contrasting Plants and Animals Man has come a long way from the caveman days and so has our understanding of the world around us. Humans have always used plants and animals in one capacity or another‚ yet when a person thinks of the phrase ’plants and animals’‚ they automatically begin thinking about the differences between the two. Well I say that plants and animals have been known far too long for their differences. And as different as they seem‚ plants and animals are very similar
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amount of species in a small area Benthos‚ rainforest canopies Medicinal value Most prescription drugs used were derived from living things Many lives have been saved from cancer by the rosy periwinkle tropical plant Penicillin comes from a fungus Agricultural value Wild plants serve a source of genetic variation Can provide biological pest control reduces need of chemicals Wild bees resistant to mites that have wiped out honeybee population that pollinates crops Consumptive use
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Bromeliad-Living Spiders Improve Host Plant Nutrition and Growth Mutualism has become an important area of research in ecology. Plant performance can be improved if organisms‚ such as ants or spiders‚ reduce the damage to floral tissues caused by phytophages. Most mutualistic relationships that have been studied focus on the influence certain organisms have on improving plant performance and the shelter/ food the plant provides in return. For example‚ the Cecropia tree is defended by colonies
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2. Components of ecosystem 3. Trophic level 4. Food chain (introduction) 5. Type of food chain 6. Food web 7. Conclusion INTRODUCTION ON ECOSYSTEM An ecosystem is a community of living organisms (plants and animals) sharing an environment. The largest ecosystems are called biomes. An ecosystem consists of the biological community that occurs in some locale‚ and the physical and chemical factors that make up its non-living or abiotic environment
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