☀️Plants Responce Flashcards
Stimulus
Anything that causes a reaction in an organism
Responce
The activity of a cell or organism as a result of a stimulus
Structures required for Responce
Immune system
Method of movement
Nerve / sense organ system
External factors of plant Responce
Light - energy - photosynthesis Day length Gravity Temperature Reaction
Plants grow faster at
A higher temperature
Temperature effects
The rate of an enzyme
Gravity causes roots to
Grow down into the soil and shoots upwards
Internal factors
Plants produce chemicals called growth regulators
Where are growth regulators produced
In the meristem
Tropism
The change in the growth of a plant in Responce to an external stimulus
Positive tropism
Occurs when the growth is towards a stimulus
Negative tropism
Occurs when the growth is away from the stimulus
Name the 4 types of tropisms
Phototropism
Geotropism
Hydrotropism
Chemotropism
Photo tropism
Change in growth of a plant in Responce to light
Geotropsim
Change in growth of a plant in respond to gravity