How Do Plants Defend Themselves Against Insects?

How Do Plants Defend Themselves Against Insects? The first line of plant defense against insect pests is the erection of a physical barrier either through the formation of a waxy cuticle,9 , 16 and/or the development of spines, setae, and trichomes. … Spinescence includes plant structures such as spines, thorns and prickles. What do plants

What Is The Stimulus For Phototropism In Plants?

What Is The Stimulus For Phototropism In Plants? Phototropism is a growth response where the stimulus is light, whereas gravitropism (also called geotropism) is a growth response where the stimulus is gravity. What is the stimulus in plants? Stimulus in plants The plant responds to many types of external stimuli such as light, gravity, weather,