Directions Match up the word with the correct
- Slides: 19
Directions: Match up the word with the correct definition and picture using the cards provided by your teacher. For those words you do not know, set them to the side, you will learn them by the end of the period. Autotrophs Heterotrophs Consumers Carnivores Herbivores Decomposers Omnivores Trophic levels Food chain Producer Food web Scavengers
Autotrophs • A group of organisms that can use the energy in sunlight to convert water and carbon dioxide into Glucose (food). • Autotrophs are also called Producers because they produce all of the food that heterotrophs use. • Without autotrophs, there would be no life on this planet. • Ex. Plants and Algae
Autotrophs
Heterotrophs • Organisms that do not make their own food. • Another term for Heterotroph is Consumer because they consume other organisms in order to live. • Ex. Rabbits, Deer, Mushrooms
Types of Heterotrophs
Types of Heterotrophs Consumers Scavengers/Detritivores – feed on the tissue of dead organisms (both plants and animals). • Ex. – Vultures, Crows, and Shrimp
Types of Heterotrophs Consumers Herbivores – eat ONLY plants. • Ex. – Cows, Elephants, Giraffes
Types of Heterotrophs Consumers Carnivores – eat ONLY meat. • Ex. – Lions, Tigers, Sharks
Types of Heterotrophs Consumers Decomposers – absorb any dead material and break it down into simple nutrients or fertilizers. • Ex. – Bacteria and Mushrooms
Types of Heterotrophs Consumers Omnivores – eat BOTH plants and animals. • Ex. – Bears and Humans
Ecological Pyramid • An ecological pyramid models the relationship between consumers and producers at different trophic levels in an ecosystem.
Trophic Levels • Energy moves from one organism to another when it is eaten. • Each step in this transfer of energy is known as a trophic level. – The main trophic levels are producers, consumers, and decomposers.
Ecological Pyramid
Food Chains • The energy flow from one trophic level to the other is known as a food chain. • A food chain is simple and direct. • It involves one organism at each trophic level. – – Primary Consumers – eat autotrophs (producers). Secondary Consumers – eat the primary consumers. Tertiary Consumers – eat the secondary consumers. Decomposers – bacteria and fungi that break down dead organisms and recycle the material back into the environment.
Food Chain
Food Web • Most organisms eat more than JUST one organism. • When more organisms are involved, it is known as a FOOD WEB. • Food webs are more complex and involve many organisms.
Food Web • The arrow points in the direction of the energy transfer, NOT “what ate what”.
Directions: Match up the word with the correct definition and picture, using the cards provided by you teacher. Autotrophs Heterotrophs Consumers Carnivores Herbivores Decomposers Omnivore Scavenger Producer Detritivore Predator Prey
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