DENDROLOGY

Detailed explanation-1: -The modes of dispersion of seeds are gravity, wind, water, explosion and animals. Sunlight doesn’t have any direct effect on dispersion of seeds.

Detailed explanation-2: -Seed dispersal is the movement, spread or transport of seeds away from the parent plant. 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.

Detailed explanation-3: -Fungus doesn’t help in propagation of plants through seed dispersal.

Detailed explanation-4: -Coconuts are really heavy and are not dispersed through the air, instead, they are dispersed through the water as it floats.