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Chapter 2-1 Science
6th Grade Study Cards
| Term | Definition |
|---|---|
| producer | An organism that can make its own food. They are the source of ALL the food in the ecosystem. |
| consumer | An organism that obtains energy by feeding on other organisms. |
| herbivores | A consumer that eats only plants. |
| Caterpillars and deer | Both are examples of herbivores |
| carnivores | Consumers that eat only animals. |
| Lions and spiders | Both are examples of carnivores |
| Omnivores | Consumers that eat both plants and animals. |
| Crows, bears, and most humans | All are examples of omnivores. |
| scavenger | A carnivore that feeds on the bodies of dead organisms. Examples: Catfish and vultures |
| decomposers | ___________ break down wastes and dead organisms and return the raw materials to the ecosystem. |
| Nature's recyclers | decomposers |
| Mushrooms and bacteria | Both are common decomposers |
| Energy Pyramid | Shows the amount of energy that moves from one feeding level to another in a food web. |
| energy role | Each of the organisms in an ecosystem fills the ______________ ________ of producer, consumer, or decomposer. |
| food chain | A ___________ ___________ is a series of events in which one organism eats another and obtains energy. |
| is always a producer | The first organism in a food chain _________________________, such as a tree. |
| first-level consumer | The second organism feeds on the producer and is called a _________________________. |
| second-level consumer; woodpecker | Next, a________________________________ eats the first-level consumer. The second-level consumer on p. 44 is a ___________________. |
| algae (producer)---tadpole (first-level consumer)---heron (second-level consumer) | Identify energy roles of the following organisms in a pond ecosystem: tadpole; algae, heron |
| A food web consists of many overlapping food chains in an ecosystem. Most organisms do not eat the same things everyday. | Why is a food web a more realistic way of portraying an ecosystem that a food chain? |
| Only about 10% of the energy at one level of a food web is transferred to the next higher level. The other 90% is used for organism's life processes or is lost to the environment as heat. | How does the amount of energy available at one level of an energy pyramid compare to the amount of energy available at the next level up? |
| Since so much energy is lost at each level the amount of energy available at the producer level limits the number of consumers that the ecosystem is able to support. | Why are there usually few organisms at the top of an energy pyramid? |
Created by:
dsimmons
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