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Introduction to multicellular organisms
Transcript of Introduction to multicellular organisms
Multicellular Organisms Photo based on: 'horizon' by pierreyves @ flickr Plants Capture Energy From the sun Multicellular Organisms Meet Their Needs in Different ways Plants Are Producers Animals Obtain Energy and Materials From Food Animals Are Consumers Fungi absorb material from the environment Levels Of Organization Cell - Tissue - Organ - Organ system - Organism Organs are a structure made up of different tissues Tissue is a group of cells that work together Organ Sytems And The Organism Have 5 different organ systems Respitory system allows you to breath Muscle system allows you to move Multicellular Organisms have cells that are specialized Multicellular Organims are Adapted to Live in Different Environments Body shape is an adaptation Fur color is an adaptation Adaptations can become a form of behavior This is a way organisms get energy Sexual Reprodution Leads to Diversity Budding is a form of sexusal reprodution First cellular process is meiosis The second process is fertilization Most multicellular reproduce sexually Called photosynthesis Light energy must be turned into chemical energy Light energy cannot drive the cellular process Anther name for a plant is a autotroph Plants Respond to seasonal changes Seasons affect plants Winter causes leaves to die Reproduction is affected by seasonal changes Heat can affect how long days are Plants Respond to their environments Plants respond to touch stimulus Plants have stimulus through gravity, touch, and light Light is a powerful stimulus Gravity is the force that keeps you on the ground Plants Are Adapted to Different Environments Some plants adapt for protection Grasses grow in several environments Leaves, stems, and roots are adaptations Some plants adapt for spceific needs processing food Digestion breaks down food till it is small enough to be consumed by cells Digestive system uses phisical and chemical energy Energy is stored in complex carbon compounds in food what animals eat Can be grouped by food eaten Plants and animals Omnivores, herbivores, and carnivores releasing and storing energy Breath in lungs, gills, and spiracles Get energy from sugar and other compounds Don't feed continuosly so they store energy in tissue or organs Animals Respond to Seasonal Changes Hybernation is a sleep-like state that last for an extended period of time During winter organisms fly south Migration is the movement of animals to other reigions Animals interact with the environment and other organisms Prey is the animal that is being hunted. Predator is the animal that is hunting. An obsevable respose to stimulus is called a behavior 3 types of behavior.
Interaction between the same spiecies
and Interactions between different spiecies Hyphae are thread like structures Most fungi are multicellular Fungi are decomposers A spore is the reproductive cell for fungi Fungi include, mushrooms, molds, and yeast Yeast are in bread Yeast are single- celled Mold is fuzzy growth and causes diseases Mushrooms can be edible or poisonous Fungi can be helpful or harmful to other organisms Can help by releasing materials into the ground Fungi function as the main decomposer on earth Many fungi produce toxins Some fungi live with single- celled alage this is called lichens