Question

Explain Excretion in plants and animals briefly.​

Answer 1

$\huge\bigstar\underline\mathsf{Excretion:-}$

$\longrightarrow$Removal of harmful and excess materials from the body is called as Excretion. It can be performed by both plants & animals.

Excretion in Plants:-

$\longrightarrow$In plant for excretion there is mo excretory system but they can be excreted by means of any parts.

Excretion materials in plants:-

$\longrightarrow$CO2, O2, H2O and alkaloids.

◾CO2 & O2 excreted when they are in excess amount by the means of stomata through opening and closing during respiration and photosynthesis respectively.

Excretion in Animals:-

$\longrightarrow$In unicellular animals like amoeba and paramecium process of excretion takes place by contractile vacuoles in which they remove harmful substances along with excess amount of water.

$\longrightarrow$In multicellular animal different excretory organs are present for excretion of nitrogenous wastage.

Answer 2

Answer:-

Excretion in Plants:-

• Elimination of toxic and waste products from the body is called excretion. Organisms like animals have an advanced and specialized system for excretion. But plants lack a well-developed excretory system like that in animals. They do not have special organs for excretion. Thus, excretion in plants is not so complex.

Excretory products:-

• The cellular respiration, photosynthesis, and other metabolic reactions produce a lot of excretory products in plants. Carbon dioxide, excess water produced during respiration and nitrogenous compounds produced during protein metabolism are the major excretory products in plants.

• Plants produce two gaseous waste products i.e. oxygen during photosynthesis and carbon dioxide during respiration. Excretion of gaseous waste in plants takes place through stomatal pores on leaves. Oxygen released during photosynthesis is used for respiration while carbon dioxide released during respiration is used for photosynthesis.

• Excess of water is also excreted from the plant body through the stomatal pores and from the surfaces of fruits and stems. The process of elimination of water is called transpiration.