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Unit 5 lessons 3-5

Plants and Animals

structure a part of an organism
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
vertebrate an animal wit a backbone
invertebrate an animal without a backbone
exoskeleton a hard covering, or shell, that protects an invertebrate's body
bird a vertebrate that has a beak, feathers, two wings, two legs, and lays eggs
reptile a vertebrate taht 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
gills a structure some animals use to take in oxygen from water
fish a vertebrate that lives in water and breathes oxygen using gills
mammal a vertebrate taht has hair or fur, is born alive, and feeds its young milk