1. Characteristics and classification of living organisms Flashcards
What is movement?
the action of an organism or a part of it which causes a change in position/place
What is respiration?
chemical reaction that takes place in cells which break down nutrient molecules, releasing energy (for metabolism)
What is sensitivity?
the ability to detect and respond to changes in the internal/external environment
What is growth?
the permanent increase in size and dry mass
What is reproduction?
the process which makes more of the same type of organism
What is excretion?
removal of toxic waste products of metabolism and of substances which are in excess
What is nutrition?
the taking in of nutrients/materials for growth, energy and development
What are some examples of excretory products?
CO2, urea and sweat
What are some processes of excretion?
exhaling + gas exchange
urination
thermoregulation
What is egestion?
removal of undigested material as faeces
What is an example of sensitivity?
leaves changing direction to face sun
What are the main features used to group animals/plants into their kingdoms?
movement
respiration
sensitivity
growth
reproduction
excretion
nutrition
What are leaves from monocotyledons like?
they have parallel leaf veins
What are leaves from dicotyledons like?
have reticulated leaf veins (web-like)
What are flowers from dicotyledons like?
petals in multiples of 4/5
