Terms
Study of living things
Biology
Stiff, protective outermost layer found outside the cell membrane of a plant cell
Cell wall
External skeleton
Exoskeleton
Side-to-side jaws
Mandible
Eye having only one lens
Simple eye
Study of plants
Botany
Smallest unit of any living thing
Cell
Protective outer covering of a seed
Microscopic organism
Microorganism
Animal kingdom; consists of multicellular organisms that are consumers
Kingdom Animalia
Simple sugar produced by plants
Glucose
Tree that produces seeds in cones
Conifer
Vase-shaped part of the flower; makes undeveloped seeds
Pistil
Living thing
Organism
Control center of a cell; stores DNA
Nucleus
Internal skeleton
Endoskeleton
Breathing holes through which air enters
Spiracles
Eye having multiple lenses
Plant kingdom; multicellular organisms that produce their own food through photosynthesis
Kingdom Plantae
Process that combines glucose with oxygen to release energy and produce carbon dioxide and water
Cellular respiration
Living part of the seed that is the beginning of a new plant
Embryo
Organism having only one cell
Unicellular organism
Animal with a backbone
Vertebrate
Chlorophyll-containing organelle where photosynthesis takes place within the cell of a green plant
Chlorophyll
Tree having flat broad leaves that produce seeds
Broadleaf tree
Lower part of the pistol where seeds develop
Ovary
Layer of earth's surface where life exists
Biosphere
Barrier that surrounds and protects the cell
Cell membrane
Ability of an object to be divided into equal halves that are mirror images of each other
Symmetry
Tiny hair-like sense organs
Sensilla
Four stages of development in insects - egg, larva, pupa, adult
Complete metamorphosis
Undeveloped seed; contains female egg cell of a flowering plant
Ovule
Three stages of development in insects - egg, nymph, adult
Incomplete metamorphosis
Undeveloped seed; contains female egg cell of flowering plant
Ovule
Organism having more than one cell
Multicellular organism
The study of animals and how they live
Zoology
Air pores on a leaf
Stomata
Food making process in green plants; uses sunlight, carbon dioxide, and water to make glucose and give off oxygen
Photosynthesis
Part of the flower that makes pollen
Stamen
Passing of characteristics from parent to offspring
Heredity
"Little organ" within the cell where chemical reactions occur
Organelle
Inability of an object to be divided into equal halves
Asymmetry
Breathing tubes that carry air to an insect's cells
Tracheae
Tail-like organ on some cells that propels them
Flagellum
Plants without xylem and phloem tissue
Nonvascular plants
Single-celled reproductive structure
Spore
Stored food within a seed for the new plant
Endosperm
Single-celled microorganism that does not have a nucleus
Bacterium
An animal without a backbone
Invertebrate
Tissue that carries glucose from a plant's leaves to the stem and roots
Phloem
Tree that loses its leaves and is bare for a part of the year
Deciduous tree
Fern leaf
Frond
Science of classification
Taxonomy
Jelly-like substance within the cell
Cytoplasm
Law stating that living things can come only from other living things
Law of biogenesis
Egg-laying organ of some female insects
Ovipositor
Organism whose cells have a true nucleus
Eukaryote
Uniting of a male sperm cell with a female egg cell
Fertilization
Underground stem that grows sideways
Rhizome
Structure in the embryo that absorbs and stores food from the endosperm
Cotyledon
Unicellular organism without a true nucleus
Prokaryote
Invertebrate having an exoskeleton, jointed legs, body segments, and an open circulatory system
Arthropod
Tissue that carries water and nutrients from a plant's roots to its leaves
Xylem
Plants having xylem and phloem tissue
Vascular plants
Hair-like thread that absorbs water and nutrients; root-like structure of a nonvascular plant
Rhizoid