Question | Answer |
organism | living thing |
cell membrane | flexible wrapping around animal cells |
cell | unit of living things |
unicellular | a organism made of a single cell |
multicellular | a organism made of more than one cell |
organelles | basic structures of a cell |
cytoplasm | gel-like liquid |
nucleus | cell's control center |
mitochondria | membrane-covered organelles |
vacuole | membrane-covered structure |
cell wall | outer covering of the cell |
chloroplasts | the food plants make for themselves |
chlorophyll | a chemical |
tissue | the same cells working together at the same task |
organ | tissues working together |
organ system | organs that work together to do a task |
classification | groups according to shared characteristics |
kingdom | the broadest group a organism is classified in |
species | the narrowest group of a organism |
vertebrate | a animal with a backbone |
invertebrate | a animal without a backbone |
vascular | contains tubes or vessels |
non vascular | plants that don't have a vascular tissue |
gymnosperm | a seed plant that does not make a flower |
vascular system | a series of hollow tubes |
seed | contains a undeveloped plan,stored food,and a covering |
spore | a single cell that can develop into a new plant |
angiosperm | a seed plant that produces flowers |
root | a part of the plant that absorbs water and stores food and anchors the plant |
root hair | a threadlike projection from a plant root |
root cap | covers the tip of the root |
epidermis | the part of the root that has root hairs and absorbs |
cortex | stores food and nutrients |
aerial | roots that never touch the ground |
fibrous | thin,branching roots that grow in wide areas |
tap roots | a singe main stalk-like root with small roots growing out of it |
prop roots | they provide support for the plant |
bark | a tough outer covering that is a protective layer |
xylem | a bunch of tubes that move water and minerals, but only upward |
phloem | moves sugar that are made in the plants leaves to another part of a plant |
cambium | where phloem and xylem cells are made |