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!
Tracheoles - Respiration
The tracheal system consists of an air filled system of tubes - the tracheal tubes that branch repeatedly until they become fine as capillaries, and are called tracheoles. The tracheolar endings arc in close proximity to the cells of the body and sometimes they indent into the plasma membrane giving the impression that they actually enter the cells. Trachea varies in diameter from 1-2 mm and the diameter of tracheoles is between 0.6-0.8 mm. In the larger tracheae, thickenings known as taenidia in the cuticular lining prevent the tubes from collapsing. The walls of the tracheae become progressively thinner as they branch so that the tracheolar endings are only 5, μn in diameter. Figure shows the arrangement of tracheal system in some insects.
Figure: Some modifications of the tracheal system in insects. (a) The basic pattern, (b) mechanically ventilated air sacs, (c) terminal spiracles in aquatic insects.
Q. What are the six criteria used to build a complete evolutionary branch of vertebrates? Dichotomy in each of the six following criteria builds the vertebrate evolutionary bra
The effect of light on the growth of stems (a) Plant some seeds that grow rapidly like as oats, radish, bean or mustard seeds in two flower pots. When the seedlings are about
Define Drug metabolism (Poly-pharmacy)? As older persons are sometimes prescribed number of medications, care is to be taken, as there is reduction in renal and hepatic clearan
Q. Can you explain Bayesian Theorem? Bayesian Theorem: The predictive value of a test is related to the incidence of disease in the population. A history of typical angin
What is genetic equilibrium? The Genetic equilibrium is the result of the Hardy-Weinberg law, a principle that affirms that under specific conditions the frequencies of the all
Q. Can the heat capacity of water be considered small or large? What is the biological consequence of that characteristic? From Thermology it is acknowledged that the quantity
Explain Gelation - Function of proteins Gelation refers to the process where denatured molecules aggregate to form an ordered protein network. Proteins can form a well-order
What is the concept of universality of the genetic code? What are the exceptions to this universality? The genetic code is universal because the rules of protein codification b
Q. Is reproduction in sponges asexual or sexual? Reproduction in sponges can be asexual by budding, fragmentation or gemmation (regeneration) or sexual with larval stage a cili
Primitive Nervous System - Nerve Net A nervous system creates its appearance for the first time in the phylogeny among Cnidaria. In this group the nerve cells make an irregula
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