Gills - respiration, Biology

Assignment Help:

Gills -Respiration

Gills are highly vascularised extensions of gas exchange membranes. The simple type may be extension of the body surface as in sea-slugs, sea stars and many of slow moving aquatic animals. The complexity of the gills reflects the animal's requirement for oxygen. Animals with greater need or oxygen have elaborate gill structure. Before we discuss the structure of the gill let us consider the ways in which gills are ventilated because the environment in contact with respiratory surface must be continuously renewed to avoid depletion of oxygen or excessive accumulation of carbon dioxide.

 


Related Discussions:- Gills - respiration

How does the heart impel the blood, Q. How does the heart impel the blood? ...

Q. How does the heart impel the blood? The heart is a muscular organ that contains chambers right ventricle and right atrium right ventricle and and left atrium through which b

Classification of multicellular animals - coelom, Classification of Multice...

Classification of Multicellular Animals - Coelom We know earlier that the pseudocoel gave animals specific selective benefits. Among other things, this fluid-tilled space wor

Explain about adhesive tape of many varieties, Explain about Adhesive tape ...

Explain about Adhesive tape of many varieties Adhesive tape of many varieties with backing materials coated with an adhesive to keep the dressing in place. The adhesive bandage

What do you mean by binomial nomenclature, Q. What do you mean by Binomial ...

Q. What do you mean by Binomial nomenclature? Binomial nomenclature is the naming of the individual entity and the group so produced through classification, according to the in

Transition of the vertebrates, Q Which is the chordate class considered an ...

Q Which is the chordate class considered an evidence of the transition of the vertebrates from the aquatic to the dry land environment? The amphibians are totally aquatic in th

What are living and nonliving reservoirs, What are living and nonliving res...

What are living and nonliving reservoirs? Viruses are both living as well as non-living. They have reservoirs of genes. A one nucleotide is a unit of gene. Viral genes make use

Discuss haematoxylin and its subtypes in detail, Question 1 Discuss how yo...

Question 1 Discuss how you would perform mounting of stained sections. List commonly used mounting media in histopathology laboratory. Add a note on advantages and disadvantages o

Is the ventricle lumen larger during systole, Is the ventricle lumen larger...

Is the ventricle lumen larger during systole or during diastole? Systole is the stage of the cardiac cycle on which the ventricles contract. So the lumen of these chambers is d

State the terms - blastocoel and blastopore, State the terms - Blastocoel a...

State the terms - Blastocoel and Blastopore? During the development of embryo, single cells divide and form a hollow ball of cells one cell layer thick. Cavity inside this holl

., what is the skeleton in the different classes of coelentrata known

what is the skeleton in the different classes of coelentrata known

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