Question

How do plants excrete wastes?

Answer 1

Excretion is a process by which metabolic waste; nitrogenous wastes are eliminated from a living organism. Invertebrates, this is carried out by the respiratory lungs, kidneys and skin.
In plants, it is carried out by leaves.
This is in contrast with secretion, where the substance may have particular proper tasks after leaving the particular living cell.

Complete answer:
• All living organisms sustain life, based on the definite process of life. These life processes help to control their proper daily movements. Excretion is also one of them.
• The metabolism takes place in the plant’s cells of organisms out-turning in useful and toxic products.
• The gathering of poisons may harm the living organism. Thus, the organisms’ detach these metabolic toxin wastes from their body and these processes are called excretion.
• Different living organisms follow different modes of ejection. Let’s have a glance at excretion in plants and how expulsion in plants is dissimilar from that of living organisms.
• Elimination of poison and waste products from the plant body is called excretion in plants. Organisms like animals, humans have an organised and specialized system for normal excretion.
• But plants lack developed excretory systems. Plants do not have special living body parts for excretion. Thus, ejection in plants is not so problematic.
• Excess of ${H_2}O$ is also ejected from the living plant body through the stomatal pores and from the surfaces of fruits and stems and also from leaves.
• The process of elimination of water is called transpiration in plants.

Note: The removal of the waste toxin harmful products of metabolism from plant living organisms is called excretion in plants. In plants, waste products are eliminated by diffusion. Plants excrete oxygen ${O_2}$. Plants get out of the water by transpiration in plants. Waste products may be kept in vacuoles or may be stored in green leaves which fall off from the plant.