Question

How is excretion in plants useful to human beings?

Answer 1

Hint: The living organisms sustain life, based on some life processes. These certain life processes help to take care of their daily activities. Excretion is one such among them. Let us discuss how these are helpful for humans.

Complete answer:
Excretion in the plants leads in the production of different kinds of excreta which may be waste for the plant but are sometimes equally important for human use. The following examples are very helpful in proving the above fact:
-Oxygen which is an excretory product of the process of photosynthesis which is an absolute requirement for human beings in order to survive on earth.
-Tannin is also a waste plant product which is generally stored in leaves and bark. It is used in making tea all around the world.
-Plants store waste products in their parts like leaves and barks which are shed off on a regular basis. These shed offs are useful to make manure.
-Essential oils are also the waste products of the plants which are stored in their leaves. These essential oils are used to serve various purposes by us.
-Gums obtained from the plants are widely used to make adhesives.
-Resins which are used to make varnishes, glazing agents etc.
-Natural rubber which is obtained from the rubber plant is also used as raw material in the tyre industry.

Note: The metabolism taking place in the cells of living organisms resulting in producing both useful and toxic products. Thus, the living organisms remove all these metabolic wastes from their body by a process known as excretion.