Advertisement Upgrade to remove ads

Plants React to

Light, Gravity, Changes is photoperiod, Touch


Plants tendency to move towards light


Plants tendency to grown towards the ground


Plants tendency to react to touch

Hormones and Phytochrome are involved in...

receiving information and causing changes in plants


responsible for phototropism in stems, gravitropism in roots, apical dominance

Apical Dominance

Concentration of growth at the tip of a plant shoot, where a terminal bud partially inhibits axillary bud growth.


Auxin abbreviation


responsible for stem elongation or growth, wakes up seeds that are dormant


Giberellins abbreviation


promotes cell division in plants, causes growth in plants, prevents senescence in plants


Old age in plants

Abiscisic Acid

stress hormone, inhibitory, initiates seed and bud dormancy, closes stomates


only hormone that is a gas, initiates leaf, fruit and flower drop, ripen fruit


Leaf fruit or flower drop


the flowering "hormone" that is actually a pigment

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again


Reload the page to try again!


Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording