any change in the environment to which an organism responds.
a chemical messenger; that either stimulates or inhibits.
permanent increase in size
changing of cells so they can perform specific functions.
an area where repeated mitosis takes place (terminal bud)
to cause more/ increase a response
to stop or slow down a response
growth movement of plant in response to an external stimulus in environment
growth of plants in response to light, (+) phototropic grow towards light, (-) phototropic grow away from light
growth of plants in response to gravity, (+) geotropic towards gravity, (-) geotropic away from gravity
micro-organism that causes disease
adapted leaves found on a stem
phenomenon where auxins in terminal buds inhibits the growth of lateral buds