NEET BIOLOGY

Detailed explanation-1: -When the seeds are ready, the seed pods become dry. This causes the pod to split up and throw the seeds out of the pod with a force. This mechanism is called explosion method of seed dispersal.

Detailed explanation-2: -Explosive dehiscence ballistically disperses seeds in a number of plant species. During dehiscence, mechanical energy stored in specialized tissues is transferred to the seeds to increase their kinetic and potential energies.

Detailed explanation-3: -There are five main modes of seed dispersal: gravity, wind, ballistic, water, and by animals. Some plants are serotinous and only disperse their seeds in response to an environmental stimulus. These modes are typically inferred based on adaptations, such as wings or fleshy fruit.

Detailed explanation-4: -Plants such as burdock have hooks to which the seed is attached. These hooks easily get caught in the fur of mammals as they pass by the plant. At some point the seed will fall, often a considerable distance from the parent. If conditions are right the seed will germinate and grow into a new plant.