B16 - adaption and competition Flashcards
community definition
an interacting group of various species in a certain location
population definition
the number of a single species living in a certain area
ecosystem definition
a community of different animal and plant species interacting in a certain area
abiotic vs biotic factor
biotic is a living organism that shapes it’s environment, abiotic is a non living part of an ecosystem that shapes it’s environment
what 6 things does life need
water, temperature, light, oxygen, mineral ions, carbon dioxide
how do you find out the population in an area
quadrat
how do you see how light/other factor affect plant growth
transect
what is the difference between intraspecific and interspecific competition
intraspecific is competition between individuals of the same species - overpopulation
interspecific is competition between individuals of different species
what are extremophiles
organisms that are adapted to live in extreme conditions - e.g. very hot or cold
what are the three main types of adaptations
behavioural, physiological, structural
why are animals in cold environments bigger
lower surface area - lose less heat
plant adaptations
large SA for diffusion + sunlight
roots - water intake and support
waxy cuticle / hairs - water runoff and stops eaten
stomata - no water loss
tall - compete for sunlight
