Food Chains,Webs, and Energy Pyramids

Classwork Match the description with the appropriate level of ecological organization: A single ant organism A colony of ants Population The ants, grass, and flowers found in a certain area Community The ants, grass, flowers, sun, and soil in a certain area Ecosystem A group of biotic and abiotic factors that share a similar climate and weather patterns Biome The portion of the earth that supports life Biosphere Food Webs and Energy Pyramids Use the word bank to complete the sentences below: 1. A producer is an organism at the beginning of a food chain because they can produce their own food using energy from the sun2. Organisms that feed off of other organisms and cannot make their own are known as heterotrophs3. A nonliving part of the environment is a(n) abioticfactor4. A living part of the environment is a(n) biotic factor5. A consumer that eats only plants is known as a herbivore6. A consumer that eats both plants and animals is called an omnivore7. Energy is transferred through an ecosystem by eating or consuming food and is represented on food chains and food webs using arrows8. Decomposers breakdown decaying organisms and nutrients are put back into the soil by bacteria and fungi Use the following food chain to answer the questions below: - The arrows represent energy flow- In this food chain, which organism is the producer? grass - In this food chain, which organism is the primary consumer? grasshopper- In this food chain, which organism is the tertiary consumer? snake- In this food chain, which organism is an herbivore? grasshopper - What type of consumers are the frog and the snake? carnivores- If the frog population increased, what would happen to the grasshopper population? It would decrease - If the frog population increased, what would happen to the snake population? It would increase- Which organism has the highest amount of energy? grass- Which organism has the lowest amount of energy? snake- What was the original source of energy in this food web? Sun Use the food web below to answer the following questions What level of consumer is a wild cat? Primary Consumer Secondary Consumer Tertiary Consumer What level of consumer is a goat? Primary Consumer Secondary Consumer Tertiary Consumer Which organism can be both a primary and a secondary consumer? Owl Wild Cat Rabbit Snake This food chain can be found in the coastal waters of Virginia. The population of which organisms in the food chain would be the first to decline if commercial fishing over-harvested shrimp? Algae Zooplankton Damselfish Barracuda Use the energy pyramid below to answer the following questions. What happens to the amount of energy available to organisms when moving from trophic level 1 to trophic level 2? the energy increases by approximately 90% the energy decreases by approximately 10% the energy decreases by approximately 90% the energy increases by approximately 10%