6. Name important defence mechanisms in plants against herbivory.
The defence mechanisms in plants against herbivory are as follows:
1. Presence of thorns, spines, prickles and bristles
2. Stinging hirs
3. Hairy coating
4. Harbouring ants e.g. Acacia
5. Sticky glandular hairs e.g. Gnaphalium
6. Chemicals like latex, alkaloids and tannins having a bitter taste, offensive smell, silica and poisonous cardiac glycosides which herbivore animals do not like.