EVERYDAY SCIENCE

Detailed explanation-1: -Animals can disperse seeds by excreting or burying them; other fruits have structures, such as hooks, that attach themselves to animals’ fur.

Detailed explanation-2: -Xanthium seeds are produced inside a hard, spiny, double-chambered, single-seeded bur which is 0.8 to 2.01 cm long. As the seed is covered with stiff spines that are hooked, they stick to the fur of animals.

Detailed explanation-3: -. Burdock seeds are dispersed by sticking to animals and humans. They are spiky so they will stick to fur. Poppy seeds are dispersed when they explode.

Detailed explanation-4: –Seeds with hooks attach to the fur of animals or clothes of humans and are dispersed to a sufficient distance. They might then fall off and germinate into a new plant under suitable conditions. So the correct answer is option C) Animals.

Detailed explanation-5: -Some plants produce seeds that are covered in hooks or spines. These seeds get attached to animals fur or feathers. They are carried upto a certain distance away from their parent plant. Later, these seeds may either fall off, or are rubbed off by the animal.