Osmoregulation in terrestrial environment, Biology

Assignment Help:

Osmoregulation in Terrestrial Environment

 Earlier you have learnt about osmoregulation in aquatic environment. In this section, we shall study how the terrestrial animals cope up with the problems of osmoregulation. Just like the aquatic animals which are submerged in an aqueous medium, animals in a terrestrial environment can be thought of as submerged in an ocean of air. Unless the humidity of the air is high, animals having a water permeable epithelium will be subjected to dehydration very much as if they were submerged in a hypertonic medium such as seawater. In order to avoid dehydration, the epithelium should be totally impermeable to water.

The evolutionary process was not found this to be a feasible solution to the problem of desiccation, since an epithelium that is impermeable to water will be dry and such a type of epithelium will have limited permeability to respiratory gases. This mechanism will not fulfil the respiratory needs of a terrestrial animal. Due to the presence of permeable respiratory epithelia, air-breathing animals lose water across it, which would result in dehydration. Various means have been evolved to minimise the water loss in to the air through the respiratory epithelium and also other parts of the body. We shall now learn about them.


Related Discussions:- Osmoregulation in terrestrial environment

Phylum, general charactristics of phylum protozoa

general charactristics of phylum protozoa

Define nutritional needs during recovery, Define nutritional needs During R...

Define nutritional needs During Recovery? Here, let us discuss what should be the nutritional goals based on the physiological aspects involved. Goals: The main emphasis mus

Class of coclentrata, ????? # 100 ??????????? #Minimum ?????? ?????

????? # 100 ??????????? #Minimum ?????? ?????

Zoology, General characters of phylum protozoa

General characters of phylum protozoa

Function of centrioles, FUNCTION In animal cells centrioles play import...

FUNCTION In animal cells centrioles play important role in initiation of cell division by arranging spindle fibres between two poles of cell.Thus they play a role in division o

Investigation of aortic regurgitation by surgical therapy, Q. Investigation...

Q. Investigation of aortic regurgitation by Surgical Therapy? The recommendation for Aortic valve replacement is only for those patients with Severe AR. If patients with mild A

Entamoeba histolytica, Entamoeba Histolytica Losch (1875), for the fir...

Entamoeba Histolytica Losch (1875), for the first time, described the disease symptoms of infection of Entamoeba histolytica. However, it was only in 1903 that Schaudin gave t

Define the features of phylum nematoda, Define the Features of Phylum Nemat...

Define the Features of Phylum Nematoda? Phylum characteristics of Nematoda which are the world's most abundant multicellular organisms are as follows: 1. Nematodes occur in

Explain zalcitabine and adverse effects, Explain Zalcitabine and adverse ef...

Explain Zalcitabine and adverse effects Zalcitabine - Zalcitabine appears to be less effective, less convenient and more toxic than the other NRTIs; it is used rarely. Ad

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd