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Science Test 3
Study Guide
| Question | Answer |
|---|---|
| What does an arrow in a food web represent? | The direction that energy and matter move from food to the organism eating it. |
| In which direction do energy and matter move in a food web? | From the organism being eaten to the organism that eats it. |
| What is a producer? | An organism, such as a plant, that makes its own food. |
| What is a consumer? | Gets energy by eating other organisms. |
| What role do plants play in a food web? | Producer |
| Why are food webs important in an ecosystem? | They show how organisms depend on one another for food and energy. |
| What is an Herbivore? | An animal that eats plants. |
| What is a Carnivore? | An animal that eats other animals. |
| What might happen to an animal population if its food source dissapears? | Its population may decrease. |
| What could happen to other animal populations if cranes dissapeared from the food web? | Organisms that eat cranes may decrease and competition for resources may change. |
| How might competition for food increase when fewer food sources are available? | Animals have fewer resources to share. |
| How can a change in one population effect other organisms in a food web? | It can cause other populations to increase or decrease. |
| Why do animals depend on other organisms for survival? | They need food, water, and other resources to survive. |
| What is a biotic factor? | A living or once living part of an ecosystem. |
| What is an abiotic factor? | It is a non-living part of an ecosystem. |
| A rabbit eats plants and a wolf eats the rabbit. What direction should the arrow point? | Plant, Rabbit, Wolf |
| If the number of rabbits decreases, how might it effect the wolf population? | Wolves may decrease because they have less food available. |
| Name two biotic factors and two abiotic factors in a forest ecosystem. | Biotic Factors: Trees, Wolves Abiotic Factors: Rocks, The Sun |
| Why is it important for an ecosystem to have balance between plants and animals? | Organisms depend on each other and changes could effect the entire ecosystem. |
| Explain the difference between a Food Chain and a Food Web: | A Food Chain shows one path of energy. A Food Web shows multiple paths. |
| What is an Energy Pyramid? | Shows how energy moves through living things in an ecosystem. Producers are on the bottom and consumers are at the top. |
| Why are there more producers than consumers in an energy pyramid? | Producers must provide enough energy to support the consumers above them and only a small amount of energy passes from one level to the next. |
| How does energy move from a deer to a wolf? | When a wolf eats a deer, it only receives a small amount of energy from the deer because a lot of energy has already been released. |
| What happens to the amount of available energy as you move up an energy pyramid? | The amount of energy decreases. |
| How do producers and consumers get energy differently? | Producers get energy from the sun. Consumers get energy from eating other organisms. |
| What is the original source of energy for most ecosystems? | The Sun. |
| What is competition in an ecosystem? | When organisms need the same limited resource. |
| What is an ecosystem? | Living things interacting with one another in their environment. |
| What is an Ecologist? | A scientist that studies ecosystems. |
| What is a niche? | The role an organism plays in its ecosystem. |
| How does a lynx help its ecosystem? | A lynx hunts rabbits and helps regulate their population. |
| What is the difference between a habitat and a niche? | A habitat is where an organism lives. A niche is a role the organism plays in its ecosystem. |
| What are Decomposers? | Organisms that break down dead plants, animals, and waste. |
| Why are decomposers important to an ecosystem? | They are important because they return nutrients to the soil, which helps plants grow. |
| Why does an energy pyramid have many producers at the bottom? | Because they are the primary source of energy in an ecosystem. |
| Give an example of two animals competing for the same resource: | A wolf and a lynx competing for rabbit. |
| What is instinct? | A natural behavior an animal is born knowing how to do. |
| What is a learned behavior? | A behavior developed through experience or observation. |
| What is adaptation? | Adaptation is an inherited trait that helps an organism survive and reproduce. |
| What is migration? | Movement from one region to another. |
| What is simbiosis? | A close relationship between different species. |
| What is mutualism? | Both organisms benefit. |
| What is commensalism? | One benefits, the other is not significantly effected. |
| What is PARASITISM? | One benefits while the other is harmed. |
| What is hibernation? | A period of reduced activity that helps certain animals conserve energy. |
| What is dominion? | Responsibility to manage or rule over creation. |
| What is stewardship? | Responsible care of what has been entrusted to us. |
| What are the three types of symbiosis? | Mutualism, Commensalism, and Parasitism. |
| Which type of symbiosis benefits both organisms? | Mutualism |
| Which type of symbiosis benefits one organism without significantly effecting the other? | Commensalism |
| Which type of symbiosis benefits one organism while harming the other? | Parasitism |
| What are two examples of animal adaptations? | A bear's fur keeping it warm. A birds beak helping it catch food. |
| Why do some animals hibernate? | Hibernation helps animals conserve energy and survive the winter. |
| True or False: Hibernation is not a primary way to search for food. | True |
| What happens to an animals body during hibernation? | Their heartbeat and metabolism slows. |
| What is the name of the job God gave people to manage the world? | Dominion. |
| Give two reasons why animals migrate: | So they can find food and the right climate. |
| Name three biotic factors: | Asian black bear, maple trees, and animals. |
| Name three abiotic factors: | Water, Sunlight, Rocks. |
| How can a diamondback rattlesnake survive in its environment? | By using adaptations such as camouflage. |
| How can salmon and red knot birds benefit from adaptations? | By migrating. |
Created by:
CoreyRobert