Excretory organs in different animals, Biology

Assignment Help:

EXCRETORY ORGANS

  1. In protozoa through plasmalemma by diffusion. Contractile vacuole present for osmoregulation (absent in parasitic and marine protozoa).
  2. In porifera and coelenterata excretion takes place through body wall.
  3. In platyhelmenthes flame cells or protonephridia or solenocytes present.
  4. In aschelminthes coelomoducts present. In annelida nephredia are present.
  5. In arthropoda malpighian tubules, green glands or antennary glands, coxal gland present.
  6. In mollusca, coxal gland, renal gland, organ of bazonus, kebber's gland, metanepredia are present.
  7. In echinoderm by water vescular system, or ambulacral system.
  8. In protochordata by single glomerulus or proboscis gland.
  9. In urochordata by supra renel gland or pyloric gland or nephrocyte.
  10. In cephalo chordata by brown funnel or solenocyte or flame cells or Hetschek's nephridia.
  11. In bdellostoma, myxine, fishes by pronephric kidney. In amphibia by mesonephric kidney.
  12. In reptile to mammalia by metanephric kidney.

Related Discussions:- Excretory organs in different animals

Action of hormones, Action of Hormones We said earlier that hormones a...

Action of Hormones We said earlier that hormones are released into the blood stream or extracellular fluid and therefore, reach most of the cells of the body. However, they

Modification of mitosis, MODIFICATION OF MITOSIS 1 .      CRYPTOMITOS...

MODIFICATION OF MITOSIS 1 .      CRYPTOMITOSIS OR PROMITOSIS : Primitive type of mitosis. In this mitosis nuclear membrane not disappear (remain intact throughout the div

Diestrus- estrous cycle, Diestrus- Estrous cycle This lasts 60 to 70 h...

Diestrus- Estrous cycle This lasts 60 to 70 hours during which functional regression of the corpora lutea occurs. The uteri are small, anaemic, and only slightly contractile.

What is the genetic disease in which this factor is absent, What is factor ...

What is factor VIII? What is the genetic disease in which this factor is absent? Factor VIII has the function of activating factor X that in its turn is essential for the trans

Are there non-parasitic viruses, Q Are there non-parasitic viruses? All...

Q Are there non-parasitic viruses? All viruses are necessitating intracellular parasites that are they depend on the host cell to complete their life cycle. A virus does not ha

Traditionally value biological resources, However, according to conventiona...

However, according to conventional principles of economic analysis it is necessary that a resource is used for it to acquire a value. Consequently economists traditionally value bi

Explain the sources of microorganisms, Explain the Sources of Microorganism...

Explain the Sources of Microorganisms? Microorganisms are virtually present everywhere in nature including air, water and soil. The microbial flora is also associated with the

Antibodies, Antibodies Antibodies are important.tools for detecting and...

Antibodies Antibodies are important.tools for detecting and localising specific molecules in the cells due to their high specificity. The first requirement for this is to produ

What are the implant selection errors, Implant Selection Errors There a...

Implant Selection Errors There are a plethora of commercially available implant systems and designs. Qualitative and quantitative nature of the available bone should be careful

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