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!
Ram Ventilation
Some fish do not use pumping action for gill ventilation. It has been known for long that large tunas cannot be kept alive in captivity unless they are put in circular tanks where they can swim continuously. The fish swim with their mouths partly open and there are no visible breathing movements. Water flows continuously over their gills. This is known as ram ventilation.
It is now known that many fish breathe by pumping at low speed and change to ram ventilation at high speed. In this case the work of breathing is transferred from the muscles of the opercular pump to the muscles of the body and tail. However, ram ventilation is more economical as far as energy consumption is concerned than opercular pumps at high rates required for fast swimming.
Do a bit of research on gene splicing, a DNA technology that bioengineers can use to create organisms with traits that never before seen in nature (herbicide-resistant crops, mice
A L VEOL I - Sac like structure, unit of lungs. Increase surface area, exchange of gases occur in it. Rich in blood capillaries. Aloeoli join by pore of Kuhn to form a
Q. Generally where is the sporophyte positioned in relation to the gametophyte in bryophytes? How does the sporophyte obtain nutrients? The bryophyte sporophyte generally is a
What is Skeletal girdles? Explain in brief. In vertebrates, bones which connect the appendages on the left and right side of appendicular skeleton to each other. Skeletal girdl
Define Factors influencing uptake from lumen to intestinal cells? inhibition by intrinsic matrix, inhibition by dietary fiber sources, differential crowding by
It consists of: - Two kidneys that produce urine. - The left and right ureters that the urine travels through on leaving the kidneys. - The muscular urinary bladder, which
Which of the following serves as an effector, or as part of an effector, that functions in a negative feedback system? A. Nicotinic Acetylcholine Receptors (nAChR) in SA node c
What are the classes in Phylum coelenterata?
What is mechanical digestion? In molluscs, arthropods, earthworms, birds and vertebrates, in general, which organs respectively participate in this type of digestion? Mechanica
Immunogenicity Based on immunogenicity studies and experience with other vaccines, the new meningococcal conjugate vaccine (Menactra) should be highly effective in preventing m
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