"Commensalism and mutualism" Essays and Research Papers

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    Producers Autotrophic- make their own food Convert energy from the sun through photosynthesis Phytoplankton- Small plant organisms that drift water currents and use carbon dioxide‚ release oxygen and convert minerals through a form animals can use most abundant and widespread producers in the marine environment Consumers Heterotrophic- cannot make their own food‚ consume other organisms or absorb dissolved material herbivores or carnivores Decomposers Bacteria that break down dead

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    The Savanna A Savanna is a grassland ecosystem characterized by being sufficiently spaced so that the canopy does not close. Savannas are also characterized by seasonal water availability‚ with the majority of rainfall confined to one season. Savannas are associated with several types of biomes. Savannas are frequently in a traditional zone between forest and desert or grassland. The Savanna covers approximately 20% of the earth’s area. The Savannas is a wet and dry climate‚tropical savanna monthly

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    interaction between organisms forming a long term relationship with each other. Many organisms become dependent on others and they need one another or one needs the other to survive. Symbiotic interactions include forms of parasitism‚ mutualism‚ and commensalism. The first topic of discussion in symbiosis is parasitism. Parasitism is when the relationship between two animal populations becomes intimate and the individuals of one population use the other population as a source of food and can be

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    species. a. Parasitism i. A relationship between two species in which one species (the parasite) lives in/on another (the host) gaining food from it. ii. The parasite benefits of the cost of the host. (ex. Mosquitos) b. Commensalism i. Living on another organism without harming it. ii. One species benefits‚ the other is affected. (ex. Moss

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    8.2 A Local Ecosystem 1. The distribution‚ diversity and numbers of plants and animals found in ecosystems are determined by biotic and abiotic factors Students Learn to: * Compare the abiotic characteristics of aquatic and terrestrial environments The impact of abiotic characteristics on environments Abiotic Characteristic | Differences | Similarities | | Aquatic | Terrestrial | | Temperature | * Small‚ gradual changes occur | * Large variations may occur | * Temperature

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    population change impact carrying capacity? •Climate •Resources •Abiotic and biotic factors •If a population increases‚ their supplies will decrease and if population decreases‚ then supplies will increase Symbiosis Mutualism Parasitism Commensalism Alligators will burrow and create large holes that utilize the available groundwater The strangler fig needs a host tree and will drain the nutrients out of its host‚ eventually killing it The oyster gets protection from the mangroves

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    Exam 1 Review BIO 130: Introduction to Environmental Science Unit 1 Be able to define an environmental factor. There are two types (condition and resource). What is the difference between a condition and a resource? Be able to categorize particular environmental factors as conditions OR resources (for example‚ temperature is a condition and not a resource). Be able to rank from smallest to largest: ecosystem‚ landscape‚ biome‚ biosphere Be able to rank from smallest to largest (in terms

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    viii. Protective cover ix. Internal gill x. Strong adhesive power (byssus threads‚ muscular food) xi. Flattened body xii. Red pigment in algae for deep water illumination Relationships between living organisms: i. Commensalism a. Barnacles attach onto crabs to benefit from the movement brought by crabs and the food remains on the surface of the crabs. b. Small crabs live in oysters’ shells for protection and food by snatching food particles from the oysters

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    Bio 189 exam

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    1. Human population growth prehistoric times to the present…. a. Has slowed considerably over the last 50 years b. Follows an S-shaped curve. c. Has been strongly influenced by density-dependent factors d. Exhibits large oscillation around K e. Roughly fits an exponential curve 2. The experimental design used in the Ribeiroia limb abnormality study ensured that the individuals handling the tadpoles‚ examining the adult frogs and compiling the data did not know which treatment (if any)

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    Parasitism occurs when one species feeds on another organism by living on or in the host. Mutualism occurs when two species interact in a way that benefits both. Commensalism is a species interaction that benefits one species but has little‚ if any‚ effect on the other. Ecological succession is the gradual change in species composition in an area. Early successional plant species

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