1. Characteristics & classification of living organisms Flashcards
Organism
a living thing bruh
Movement
an action by an organism or part of an organism causing a change of position or place
Respiration
the chemical reactions in cells that breakdown nutrient molecules and release energy for metabolism
Sensitivity
the ability to detect and respond to changes in the internal or external environment
Growth
a permanent increase in size and dry mass (the mass of an organism after it has been killed dehydrated)
Reproduction
the process that makes new organisms of the same species as themselves
Excretion
the removal or waste products of metabolism and substances in excess of requirements
Nutrition
taking in materials for energy, growth and development
common ancestor
a species that lived in the past, and is thought to have given rise to several different species alive today
species
a group of organisms that can reproduce to produce fertile offspring
binomial system
a system of naming species that is internationally agreed, in which the scientific name is made up of two parts showing the genus and the species
genus
a group of species that share similar features and a common ancestor
dichotomous
a way of identifying an organism, by working pairs of statements that lead u to its name
kingdom
one of the major groups into which all organisms are classified
chlorophyll
a green pigment that absorbs energy from sunlight
cellulose
a carbohydrate that forms long fibres and makes up the cell walls of plants
cellulose
a carbohydrate thast forms long fibres
fungus
an organism whose cells have cell walls but tht doesnt photosynthesise
prokaryote
an organism whose cells do not hv a nucleus
protoctist
a single celled organism or one with several similar cells
hyphae (fungus)
microscopic threads made of cells linked in a long line that make up the body of a fungus
decomposers
organisms tht breakdown organic substances outside their bodies, releasing nutrients from them that other organisms can use
metamorphosis
changing from a larva with one body to an adult with a diff body form
groups within animal kingdom (vertebrates)
amphibians, reptiles, birds, mammals, fish
groups within animal kingdom (arthropods)
insects, crustaceans, arachnids, myriapods
groups within plant kingdom
ferns, flowering plants