Question

2 give two examples of mechanisms by which plants protect themselves from predator?

Answer 1

by there spines
and by releasing ouderfull smell

Answer 2

Thorn

Blackthorn (Prunus spinosa)

G.R. Roberts

Thorns are basically pointy branches or stems. Their defensive function is somewhat self-evident: they’re stabby. And contrary to what (the band) Poison would have you believe, not a single rose has one. See the next item for explanation. (As to the sad, sad songwriting abilities of cowboys, I can’t say either way.)

Prickle

Prairie rose (Rosa setigera)

John H. Gerard

Roses actually have prickles, not thorns. Unlike thorns, prickles are actually pointed protuberances from a plant’s epidermis. Think of them as razor-sharp freckles. While they shield the plants that bear them from some depredations, certain species of planthopper, small enough to squeeze between them and slurp up sap, actually mimic their spiky appearance to avoid predators.