F215 Module 4 - Responding to the environment

Responding to the environment        

Plants

Tropism directional growth response in which the direction of the repsonse is determined by the direction of the external stimulus

Plants respond to external stimuli, repsonding to the environment may help the plant to avoid stress or to avoid being eaten, and to survive long enough to reproduce.

Different types of tropisms :-

Phototropism - Shoots grow towards light (positively phototrophic), which enables them to photosythesise

Geotropism - Roots grow towards the pull of gravity --> this anchors them…