DENDROLOGY

Detailed explanation-1: -These spines protect the plant from predators as they are sharp and dangerous.

Detailed explanation-2: -Plant defenses are diverse. Plant defenses. From left to right: thorns on a rose, ants that kill herbivores feeding on plant nectar, tea leaves that contain caffeine (toxic to insects) and the microscopic silica serrated edge of a grass leaf. Animals use many ways to avoid their predators.

Detailed explanation-3: -Mechanical Defences. Some plants protect themselves with thorns and hairs. Many plants use thorns and hairs as protection against animals. For example, cacti have thorns which deters herbivores from eating them.

Detailed explanation-4: -Spines or hairs shade plants and break up drying winds across the leaf/stem surface. The roots of desert plants are also adapted to help them survive. Some plants have shallow, widespread roots to absorb a maximum of rainfall moisture. Others have deep taproots to get water that is deep underground.

Detailed explanation-5: -Cactus plants have spines to keep predators away. It also helps cactus to withstand the harsh climate of desert. Q. The thorns of a cactus plant protect it from being eaten by animals.