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40 Cards in this Set
- Front
- Back
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life cycle
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The ordered changes that occur during the lifetime of a living thing.
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species
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A group of organisms of the same kind that can mate and produce offspring like themselves.
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egg
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The first stage in the life cycle of almost all animals.
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embryo
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An animal or plant in the earliest stages of its development.
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complete metamorphosis
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The four-stage life cycle of many insects.
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larva
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The second stage in the life cycle of an insect that undergoes complete metamorphosis.
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pupa
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The third stage in the life cycle of an insect undergoing complete metamorphosis.
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adult
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The last stage of a life cycle.
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incomplete metamorphosis
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The three-stage life cycle of some insects.
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nymph
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The second stage in the life cycle of an insect undergoing incomplete metamorphosis.
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adaptation
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Behavior or part of a living thing that helps it survive in a certain environment.
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seed coat
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The part of a seed that protects the plant embryo.
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germinate
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To sprout and begin to develop into a seedling.
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seedling
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The new plant that develops from an embryo and has roots, a stem, and leaves.
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pistil
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The central part in a flower where seeds form.
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petal
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The brightly colored part of a flower that helps attract birds, bees, and other insects to the flower.
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stamen
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The part of a flower that produces pollen, which is needed to form seeds.
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pollen
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The powdery grains in a flower; they must be carried from a stamen to a pistil in order for seeds to form.
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pollination
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The process by which pollen reaches a pistil.
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fruit
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The part of a flower that forms around a seed.
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cone
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The part of a conifer that produces pollen or seeds.
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scale
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A cone's woody part on which seeds grow.
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embryo
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An animal or plant in the earliest stages of its development.
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environment
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Everything that surrounds and affects a living thing.
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savanna
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A broad, grassy plain that has few or no trees.
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adaptation
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A part or behavior that makes a living thing better able to survive in its environment.
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behavior
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The way in which a living thing acts or responds to its environment.
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instinctive behavior
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A behavior that a living thing does naturally without having to learn it.
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learned behavior
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A behavior that an organism is taught or learns from experience.
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extinct
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No longer living as a species.
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cell
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The basic unit of structure of all living things.
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life processes
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The functions that a living thing must carry out to stay alive and produce more of its own kind.
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nutrients
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Substances that are needed for an organism to live and grow.
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tissue
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Simmilar cells working together.
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organ
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Different types of tissue working together to perform a certain function.
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organ system
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Group of organs working together.
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cell membrane
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A thin layer that surrounds all cells and allows water and dissolved materials to pass into and out of the cell.
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nucleus
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The cell structure that controls all of a cell's activities.
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vacuole
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A cell part that stores water and nutrients.
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cytoplasm
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The jellylike substance that fills much of the cell.
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