Classifying Life Flashcards
biology
Study of living organisms.
biologists
People who study living organisms.
characteristics
Features of living organisms that can be observed and measured
movement
The moving of all or part of the body or organism.
reproduction
The process by which living organisms make more of themselves (either through sexual or asexual reproduction).
sensitivity
The ability of organisms to be aware of and respond to their surroundings.
growth
Getting bigger by gaining more cells or biomass
respiration
The control release of energy in food for use by the cells of an organism.
excretion
The removal of waste products from the cells or body of an organism.
nutrition
The food needed for the survival of an organism
evaluate
Work out what is good and what is not
controlled variable
Variable that is not changed during an investigation.
hybrids
Offspring of two different species. They are usually infertile.
species
Group of organisms which similar characteristics that reproduce to give fertile offspring.
invertebrates
Animals without backbones.
vertabrates
Animals with backbones.
Arthropods
Invertebrates with hard outer skeletons and jointed legs
insects
Group of arthropods with three body segments, six legs and pair of antennae.
arachnids
Group of arthropods which all have eight legs
crustaceans
Group of arthropods with at least 10 legs
myriapods
Group of arthropods with long, segmented bodies and one or two pairs of legs on each segment.
echinoderms
Invertebrate group with spiny skins that are often star or ball shaped
molluscs
Invertebrate group with muscular bodies and no legs, but may have tentacles. Often have a shell inside or outside their bodies.
worms
Invertebrate group with no legs and long bodies, which may be round, flat, or segmented.
Cnidaria
Invertebrates that all live in the sea, and have no legs and stinging tentacles around their mouths.
