Homeostasis in Plants:

Homeostasis in Plants:

How Homeostasis occurs in Plants? Explain the various modes of Homeostasis.

Plants respond to environmental changes and keep their internal conditions constant i.e. Homeostasis. They apply different mechanisms for the homeostasis of water and other chemicals (oxygen, carbon dioxide, nitrogenous materials etc)......

Removal of Extra Carbon dioxide and Oxygen:

In Daytime, the carbon dioxide produced during cellular respiration is utilized in photosynthesis and hence it is not a waste product.

At Night, It is surplus because there is no utilization of carbon dioxide.

It is removed from the tissue cells by diffusion. In leaves and young stems, carbon dioxide escapes out through tomatoes. In young roots, carbon dioxide diffuses through the general root surface, especially through root hairs.

Role of Mesophyll

Oxygen is produced in mesophyll cells only during daytime, as a by-product of photosynthesis. After its utilization in cellular respiration, the mesophyll cells remove the extra amount of oxygen through stomata.

Removal of Extra Water:

The plants obtain water from soil and it is also produced in the body during cellular respiration. Plants store large amount of water in their cells for turgidity.

Extra water is removed from plant bogy by transpiration. At night, transpiration usually does not occur because most plants have their stomata closed. If there is a high water content in soil, water enters the roots and is accumulated in xylem vessels.

Gutation

Some plants such as grasses force this water through special pores, present at tips or edges, and from drops. The appearance of drops of water on the tips or edges of leaves is called Guttation.

Removal of other Metabolic Wastes:

Plants deposit many metabolic wastes in their bodies as harmless insoluble materials.

Shedding of Leaves:

In trees which shed their leaves yearly, the excretory products are removed from body during leaf fall. Other waste materials that are removed by some plants are resins by coniferous trees, gums by keekar, latex by rubber plant and mucilage by carnivorous plants and ladyfinger etc.

Resign drops from a cut tree latest being extracted from a tree mucilage drops on by carnivorous plants.