Question | Answer |
amphibian | A vertbrate that spends part of its life in water and part of its life on land. |
bird | A vertebrate that has a beak, feathers, wings, and two legs and lays eggs. |
cell | The basic building block that makes up all living things. You can use a microscope to see that a leaf is made up of many tiny cells. |
environment | All the living and nonliving things that surround an organism. Water, soil, rocks, trees, and zebras are parts of the giraffes' environment. |
exoskeleton | A hard covering, or shell, that holds up and protects an invertebrate's body. A snail's shell is an exoskeleton. |
fish | A vertebrate that lives in water and breathes oxygen with gills. |
gills | A structure some animals use to take in oxygen from water. |
invertebrate | An animal that does not have a backbone. |
leaf | The plant structure where a plant makes food. |
lung | A structure some animals use to take in oxygen from air. Humans breathe oxygen using lungs. |
mammal | A vertebrate that has hair or fur, is born live, and feeds its young with milk. |
nutrient | A substance that living things need to grow and stay healthy. Spinach has many nutrients that people need. |
organism | A living thing. Koala bears and eucalyptus trees are organisms. |
photosynthesis | The process through which plants make food. |
reproduce | To make more of one's own kind. |
reptile | A cold–blooded vertebrate that has scaly, waterproof skin, breathes air with lungs, and lays eggs. |
respond | To react to something. When the weather gets cool in the fall, some trees respond by losing their leaves. |
root | A plant structure that takes in water and nutrients and holds a plant in place. |
shelter | A place in which an animal can stay safe. A nest is a shelter for young birds. |
stem | A plant structure that holds a plant up and helps leaves reach sunlight. |
structure | A part of an organism. Horns are structures that help keep wild sheep keep safe. |
vertebrate | An animal with a backbone. |