Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Gas Exchange
Gill surface area must be large enough to provide adequate exchange of gases. Therefore, highly active fish have largest relative gill area. Figure compares highly active fish with sluggish bottom dwellers. Their relative surface area is also given.
Figure: Fast swimming fish like makerel have larger gill area than sluggish bottom dwelling fish. The total surface area of gills is expressed per unit per gram body weight of fish.
For gas exchange to be adequate there should be adequate flow and close contact between the gill and water. To understand how this happen let us look at the structure of a gill in bony fishes as a representative of an aquatic respiratory surface. Gills are enclosed in a gill cavity. This provides protection for the fragile organ and also permits the water to run over the gills in an efficient manner. Gills of fishes consist of several gill arches on either side. The gill arches separate the opercular and P the buccal cavities. From each gill arch extend two rows of gill filaments.
Define National Approach to deal with the Prevention of Obesity? A number of countries have adopted a national approach to deal with the prevention of obesity and other non-com
State the concept of Finger Tapping The subject is asked to tap his or her extended index finger on a typewriter key attached to a mechanical counter. Several series of 10-seco
Q. What do you mean by Polyester? Polyester (ES) or polyethylene terephthalate (PET): PET is a very strong transparent glossy film, which has good moisture and gas barrier p
The scutellum observed in a grain of wheat or maize is comparable to which part of the seed in other monocotyledons? 1. Cotyledon 2. Endosperm 3. Aleurone layer 4. Plum
Define Factors that affect the requirement of Protein? Protein requirement is greatly influenced by many factors such as age, environmental temperature, energy intake, gender,
Considering a pair of homologous chromosomes containing a gene having two different alleles how many different genotypes can the individual present?
Which one of the following statements about all the four of Spongilla, Leech, Dolphin and Penguin is correct? 1. Penguin is homiothermic while the remaining three are poikilothe
Define Solubility affecting absorption of dietary iron? Solubility is crucial for non-haem iron absorption as the inorganic iron salts have to be solubilized in the intestine f
Q. Classify biomaterials and list some examples? Biologic classification is based on tissue response and systemic toxicity effects of the implant and is divided into three clas
i have a question on how to proceed the fomular of delete the gene on the human body.
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd