Bio 20: Section 3.1 Flashcards
how many divisions does mitosis have?
1
how many divisions does meiosis have
2
how many daughter cells does mitosis produce?
2
how many daughter cells does meiosis produce?
4
mitosis: the number of chromosomes in daughter cells is the _______ as in parent cell
same
meiosis: the number of chromosomes in daughter cells is _________ of the parent cell
half
where does mitosis take place?
body (somatic) cells
where does meiosis take place?
reproductive cells
everything that affects a living thing &/or that a living thing affects
environment
what is an organism?
one individual
what is a population?
a group of the same species
what is a species?
a group of organisms that can reproduce with each other and their children can also reproduce with each other
what is a community?
more than one population
what is an ecosystem?
a community interacting with abiotic factors (ex. air, water, soil)
ecologists study changes within levels of interaction. all levels are studied within a specific _________, within a specific _________
area, time
most communities are ______________ - they adapt to changing abiotic conditions
dynamic
what is succession
the predictable pattern of change in an ecosystem
what do interactions between populations and within a community do to the environment?
they alter the environment
as disturbances occur in an env., diff. _________________ will pop up and grow based on their interactions with abiotic factors
populations
what are 4 reasons of restrictions in ecosystems?
food availability
predators
precipitation (producers)
sunlight (producers)
