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Vocabulary Words-5th grade

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
Any living thing that can carry out its life on its own.   organism  
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One-celled organism.   unicellular  
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Many-celled organism.   multicellular  
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A green chemical in plant cells that allows plants to use the Sun's energy to make food.   chlorophyll  
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The smallest unit of living matter.   cell  
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A layer around the outside of a cell that controls what materials move into and out of the cell.   cell membrane  
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The gel-like liquid inside a cell.   cytoplasm  
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The largest, most visible part of a cell, which has its own membrane and is the control center of a cell's activities.   nucleus  
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A stiff structure that surrounds the cell membrane in some organisms.   cell wall  
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All the members of one species in an area.   population  
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All the living things in an ecosystem.   community  
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The path that energy and nutrients follow in an ecosystem.   food chain  
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The overlapping food chains in an ecosystem.   food web  
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A relationship between two kinds of organisms over time.   symbiosis  
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All the living and nonliving things in an environment, including their interactions with each other.   ecosystem  
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An animal that hunts other animals for food.   predator  
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A living thing that is hunted for food.   prey  
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A relationship between two kinds of organisms that benefits   mutualism  
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A relationship between two kinds of organisms that benefits one without harming the other.   commensalism  
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A relationship in which one organism lives in or on another organism and benefits from that relationship while the host organism is harmed by it.   parasitism  
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Tiny pores found in leaves and stems that allow the exchange of gases.   stomata  
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A group of chemical compunds made from carbon, oxygen, and hydrogen.   carbohydrate  
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The process in which energy is released from food (Sugar) inside a cell.   cellular respiration  
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A diagram that shows the amount of energy available at each level of an ecosystem.   energy pyramid  
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The food-making process in green plants that uses sunlight.   photosynthesis  
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The addition of harmful substances to the environment.   pollution  
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A species that has died out completely.   extinct species  
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A species that is in danger of becoming extinct.   endangered species  
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A species that is in danger of becoming endangered.   threatened species  
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The beginning of a community where few, if any, living things exist, or where earlier communities were wiped out.   primary succession  
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The final stage of sucession in an area, unless a major change happens.   climax community  
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The beginning of a new community where an earlier community already exists.   secondary succession  
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