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!
Chemoreceptors
These are receptors included in perception of chemical stimuli. You will see that there are three kinds of Chemoreceptors among metazoans:
i) Those concerned along with general chemical sense perceived by undifferentiated nerve endings or unspecified receptors. These are distributed all over the surface of the body and are common in between lower animals such as cnidarians, worms and molluscs. The most primitive type of chemoreceptor and results in escape reaction of the animal.
ii) Chemotactile sense perceived through contact Chemoreceptors involving contact with molecules in dilute solution; they are generally present in large numbers in special regions of the body. In mammals these are located on the tongue and we call the sensation taste or gustation. But in Octopus they are concentrated around the rim of the suckers, and in insects they are present on mouthparts and in flies, they are found in abundance as well on tarsal segment of foot. So one may say that the fly tastes with their fed.
iii) Olfaction involves distant chemical sense and is the most sensitive type of chemical sense. Olfactory receptors are capable of perceiving molecules of very low concentration in air and we usually call it smell. They are distributed in high density on the antennae of insects. The combined electrical recordings of the antennal nerve generated by the odors on the olfactory receptors of the antennae are termed electroantennogram. Specific insects can recognize their mates even at a distance of a couple of kilometers, from the odour (pheromone) molecules they emit.
Q What is the kind of nitrogen waste that mammals eliminate? Like chondrichtian fishes and adult amphibians, mammals are ureotelic that is they excrete urea. Q. How do plac
a) Explain somatic hybridisation? b) Describe the various steps involved in the process. Mention any two uses of somatic hybridisation
Q. Show the Symptoms of salmonellosis? Symptoms: The susceptibility of humans varies with the species and strains of the organism and the total number of bacteria ingested. A
Monomeric enzymes Monomeric enzymes are those which consist of only a single polypeptide chain, so they cannot be dissociated into smaller units. Very few monomeric enzymes are
Define Preoperative Nutritional Care during Surgery? It can be provided only to prospective candidates of elective surgery and is not feasible for emergency cases. Preoperative
What are the three main signs of diabetes? The three main signs of diabetes mellitus are called as the diabetic triad: polyuria, polydipsia and polyphagia. Polyuria is the e
Nature of Light - Floral Induction Red light promotes flowering in short day plants. If the dark regime of a short day plant is interrupted by red light, flowering is inhibite
What is the lasting form in the gametophyte, pteridophytes or the sporophyte? How can it be compared to bryophytes? The lasting form in pteridophytes is the diploid (2n) sporop
Explain what is Prosthetic Valve Endocarditis (PVE) ? Prosthetic valve endocarditis (PVE) is called EARLY when symptoms begin within 60 days of surgery and LATE when the onset
Q. Defense mechanisms used in Diabetes Mellitus? Defense mechanisms are the strategies to cope with the real situation and to maintain self-image. Healthy persons normally use
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