Explain in details class hirudenia - leeches, Biology

Assignment Help:

Explain in details Class Hirudenia - Leeches?

This group includes the leeches. Most leeches grow in tropical freshwater habitats, and are familiar to most people as bloodsuckers. The most distinguishing feature of leeches are the sucking organs that attach the leech to its host. Leeches have two suckers-one sucker at either end of the worm. Once a sucker penetrates the skin, it secretes an anti-coagulant saliva that prevents the blood from clotting. Some species even inject an anesthetic into the bite wound so that the host doesn't feel the parasite! The leech then gorges itself with blood and can increase its mass up to 10 times its normal weight. Leeches are widely used in some post-surgical procedures to help reduce swelling around the wound. These leeches are, of course, sterile and bred specifically for this task.

 


Related Discussions:- Explain in details class hirudenia - leeches

Temperature-environmental components, TEMPERATURE Temperature is a majo...

TEMPERATURE Temperature is a major physical environmental factor which profoundly influences the vital activities of living organisms like, metabolism, growth and reproduction.

What is the usual morphological feature of nematodes, Q. What is the usual ...

Q. What is the usual morphological feature of nematodes that differentiates them from platyhelminthes? Nematodes are also called as roundworms. As the name indicates they are n

Describe how platelets interact to form a blood clot, Describe briefly how...

Describe briefly how platelets, fibrin and red cells interact to form a blood clot.   Platelets release a substance which, indirectly, causes fibrinogen to be changed to fi

Define nutritional management of anorexia nervosa, Define Nutritional Manag...

Define Nutritional Management of Anorexia Nervosa? The overall goal of nutritional rehabilitation of anorexia nervosa patients is to restore weight, normalize eating pattern, a

Embryos prom synergids, Embryos Prom Synergids The synergids, which u...

Embryos Prom Synergids The synergids, which usually degenerate prior to or soon after double fertilization, are reported to give rise to embryos in Argentine mexicana, Tamari

Deterimne when lysosomic enzymes play a fundamental role, What are some bio...

What are some biological examples in which lysosomic enzymes play a fundamental role? The remodelation of the osseous tissue, the function of acrosomes in sperm cells and the e

Artificial parthenogenesis, Artificial Parthenogenesis In various cas...

Artificial Parthenogenesis In various cases, the eggs that normally develop only after fertilisation can be experimentally induced to develop parthenogenetically by specific

What is the difference between macro and micronutrients, What is the differ...

What is the difference between macro and micronutrients? The categorization criterion of nutrients into macro and micronutrients has no relation to the size of the molecule. M

Subphylum trilobitomorpha, Subphylum Trilobitomorpha Subphylum Trilobi...

Subphylum Trilobitomorpha Subphylum Trilobitomorpha involves the trilobites. All species are extinct and the fossils point out that they were all marine forms belonging to Pal

Codominance, explain the genotypes for each blood type and how this is an e...

explain the genotypes for each blood type and how this is an example of codominance. Blood type- A, AB, B, 0

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