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organism

any living thing that can carry out its life on its own,

cell

the smallest unit of living thing

chlorophyll

a green chemical in plant cells that allow plants to use the sun's energy to make food.

tissue

a group of similar cells that work together at the same job

classification

the science of organizing categories for living things

kingdom

the largest group into which an organism can be classified

species

a group of similar organisms in a genus that can reproduce more of their own kind.

gymnosperm

a seed plant that does not produce flowers

xylem

the tissue through which water and minerals move up through a plant

phloem

the tissue through which food from the leaves moves throughout the rest of a plant.

cambium

the layer in plants that separates the xylem from the phloem

photosynthesis

the food-making process in green plants that uses sunlight

asymmetrical

cannot be divided into mirror images

radial symmetry

a body plan in which all body parts of an organism are arranged around a central point

skeletal system

the organ system made up of bones, tendons and ligaments

muscular system

the body system made up of muscles that move bones

digestive system

the organ system that breaks down food so it can be absorbed into the blood stream.

excretory system

the organ system that removes cellular wastes from the body

cell membrane

flexible wrapping that surrounds all cells

central vacuole

found in plant cells only

arthropod phylum

has the most species

fungus

breaks down dead organisms to eat

virus

not a living thing but carries out reproduction

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