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Ch. 1 Science Vocab
3rd Grade
Term | Definition |
---|---|
organism | a living thing |
environment | all the living and nonliving things that surround an organism |
cell | the basic building block that makes up all living things |
root | a plant structure that takes in water and nutrients and holds a plant in place |
stem | a plant structure that holds a plant up and helps leaves reach sunlight |
leaf | the plant structure where a plant makes food |
photosynthesis | the process through which plants make food |
shelter | a place in which an animal can stay safe |
vertebrate | an animal with a backbone |
invertebrate | an animal that does not have a backbone |
reptile | a vertebrate that has scaly, waterproof skin, breathes air with lungs, and lays eggs |
amphibian | a vertebrate that spends part of its life in water and part of its life on land |
mammal | a vertebrate that has hair or fur, is born live, and feeds its young with milk |