Excretory organs in different animals, Biology

Assignment Help:

EXCRETORY ORGANS

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

Related Discussions:- Excretory organs in different animals

Explain about the lactation process, Explain about the Lactation Process? ...

Explain about the Lactation Process? Lactation is a physiologic process which has profound relevance for both the mother and the newborn. It is the period following pregnancy w

Solar energy input, Solar Energy Input We know that the spectral distri...

Solar Energy Input We know that the spectral distribution and the intensity of solar radiation incident on the earth's surface are known. Of the enormous'amount of energy that

Define nucleosomes , The initial stage of packaging have the binding of t...

The initial stage of packaging have the binding of the chromosomal DNA to histones. Whole, in chromosomes the ratio of the DNA to histones on a weight basis is around 1:1. There a

Explain about vitamin E, Vitamin E (DL-α-Tocopherol) DL-α-Tocopherol is...

Vitamin E (DL-α-Tocopherol) DL-α-Tocopherol is a yellow to red-brown, clear, viscous oil almost without odour which decolourise when exposed to light and air. DL-α-Tocopherol

Long-hair in cats is because of recessive long-hair allele, Long-hair in ca...

Long-hair in cats is due to the recessive long-hair allele, l. Black cats (rather than tabbies) are due to the recessive agouti allele, a. A long-haired black female cat has mat

What is the life cycle of the gymnosperms, What is the life cycle of the gy...

What is the life cycle of the gymnosperms? As all plants they show a diplobiontic life cycle, i.e., alternation of generations with diploid and haploid stages. The lasting (fin

Animals vs plants, Animals vs Plants Organisms are of two main types an...

Animals vs Plants Organisms are of two main types animals and plants, although all the above mentioned Unifying concepts of Biology apply equally to both animals and plants, ye

Explain changes in gluten proteins during dough formation, Changes In Glu...

Changes In Gluten Proteins During Dough Formation Initially, gluten is formed when flour and water are mixed together. The proteins in the flour, glutenin and gliadin cross l

Autogamy - patterns of sexual reproduction, Autogamy - Patterns of Sexual R...

Autogamy - Patterns of Sexual Reproduction It is known to take place in many ciliate protozoans including Paramecium. Autogamy involves same nuclear behavior like in conjugati

Poly-functional enzymes, Bi-and Poly-Functional Enzymes These enzymes a...

Bi-and Poly-Functional Enzymes These enzymes are generated by genes obtained by fusion of the coding regions of two or more genes encoding various enzymes. In simple words, the

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages