Ecology

Dive into ecology! Master food webs, energy pyramids, and symbiotic relationships with this engaging Ecology Worksheet.

Amoeba Sisters: Ecological Relationships Watch the video as needed and answer the questions below. Amoeba Sisters: Food Webs and Energy Pyramids Watch the video as needed and answer the questions below. Complete the levels of ecology from the smallest (most specific) to the broadest: cells→tissues→organs→organ systems→.... Organism --> Population --> Community --> Ecosystem --> Biosphere Match the levels of ecological organization with their definitions. A single living thing organism A group of individuals of the same species that live together Population All the species in an area that live together and interact Community All the species in an area plus their non-living environment Ecosystem The portion of the Earth that supports life Biosphere The smallest living unit of an organism cell A group of similar cells that work together to accomplish a particular function tissue A group of tissues that work together to accomplish a common task; example, the stomach organ Several organs that work together to conduct some life function; example: the digestive system organ system Match the levels of ecological organization with their descriptions. Organism A single ant Population A colony of ants Community The ants, insects, and plants in a certain area Ecosystem An entire meadow (with both its living and nonliving components) Biosphere All the meadows and other ecosystems on Earth The main difference between a community and an ecosystem is that a community only includes biotic factors whereas ecosystems include biotic (living) and abiotic (nonliving) factors. 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 Food Chains and Food Webs Use the following food chain to answer the questions below: 1. In food chains, what symbol shows the flow of energy through an ecosystem? arrows2. In this food chain, which organism is the producer? grass 3. In this food chain, which organism is the primary consumer? grasshopper4. In this food chain, which organism is the tertiary consumer? snake5. In this food chain, which organism is an herbivore? grasshopper 6. What type of consumers are the frog and the snake? carnivores7. If the frog population increased, what would happen to the grasshopper population? It would decrease 8. If the frog population increased, what would happen to the snake population? It would increase9. Which organism is in the trophic level that has the most total energy? grass10. Which organism is in the trophic level that has the least total energy? snake11. What was the original source of energy in this food chain? 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 Producer What level of consumer is a goat? Primary Consumer Secondary Consumer Tertiary Consumer Producer 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? Damselfish Zooplankton Algae Barracuda The interaction pictured below represents: Growth Respiration Energy and nutrient transfer Herbivory and decomposition Use the energy pyramid below to answer the questions that follow. Which term describes the third level of the pyramid? tertiary consumers secondary consumers primary consumers producers What percentage of energy transfers from one trophic level to the next? 90% 50% 10% 5% If 20,000 Joules of energy are available at the bottom of the pyramid, how many Joules of energy would be available at the top? 20,000 2,000 200 20 2 0.2 Symbiosis Review In the table below, use the drop down box to provide a definition and example of each type of symbiosis Definition Mutualism Parasitism Commensalism Definition Symbiotic relationship where both organisms benefit Symbiotic relationship where one organisms benefits by harming another organism known as the host Symbiotic relationship where one organism benefits and the other organism is unaffected. Example Ex: Certain birds live on buffalo and eat insects and parasites off of the buffalo Ex: A wasp injects its eggs into another organism and steals the organisms nutrients Ex: Clown fish live amid the tentacles of the sea anemones which protects the fish from predators A hummingbird's bill is long and thin, allowing it to gather nectar deep into flowers. The flowers benefit from the pollination performed by the hummingbird. This relationship is best described as: Mutualism Commensalism Competition Neutralism