Shell - body form protozoans, Biology

Assignment Help:

Shell - body form Protozoans

Majority of protozoans posses an exoskeleton in the form of a shell, also called test. The shell forms a loose covering around the body of the animal. It may have one to many apertures, through which pseudopodia of the animals can be protruded. The shells vary in their structure, material and mode of formation in different protozoans and are generally composed of:

  • Organic material i.e. chitin or tectin also known as pseudochitin as found in Arcella.

244_Shell - body form Protozoans 1.png

  • Inorganic matter such as small sand grains or diatom shells, echinoderm plates etc., giued together by a chitinous or pseudo chitinous secretion as in Diflugia. Shells of Foraminiferans (amoeboid protozoans) are beautiful and are chiefly composed of calcium carbonate.

2164_Shell - body form Protozoans 2.png


Related Discussions:- Shell - body form protozoans

Lab report, Why making a smoke print of a leaf

Why making a smoke print of a leaf

Precaution - separation of amino acid by paper chromatogrphy, Define Precau...

Define Precaution for Separation of Amino Acids by Paper Chromatography? 1. Hold the paper with the extra strip kept at one side. Handling of whatman paper with hand should be

Explain the mechanisms of endosseous integration, Mechanisms Of Endosseous ...

Mechanisms Of Endosseous Integration Three terms may be used to describe individual aspects of bone formation process that can occur around implants. They are Osteoconduction,

After purchasing - nursing software, After Purchasing The following po...

After Purchasing The following points should be considered for after purchase facilities. Avail of any training the software engineer or vendor may provide, even if it

Renal parenchymal disease, Renal parenchymal disease is the commonest cause...

Renal parenchymal disease is the commonest cause of secondary hypertension.  Hypertensive and diabetic nephropathy and chronic glomerulonephritis are the main causes. Eventually, t

Can you explain toxic alkaloids, Q. Can you explain Toxic alkaloids? Al...

Q. Can you explain Toxic alkaloids? Alkaloids are the nitrogen heterocycles which occur mainly m plants as their salts of common carboxylic aciak such as citric, lac

Wind as a medium for dispersal, Wind as a medium for Dispersal Many mic...

Wind as a medium for Dispersal Many microorganisms, fungal spores and bacteria are freely transported over long distances even by moderate winds. In wind pollinated plants, the

Diseases related with kidney, DISEASE CONCERNED WITH KIDNEY - 1.      P...

DISEASE CONCERNED WITH KIDNEY - 1.      Paget's disease - Abnormalities of kidney. 2.      Uramia - Increases in quantity of urea. 3.      Nephritis - Inflamation in glom

Define standardization - nutritional biochemistry, Define Standardization ...

Define Standardization - Nutritional  Biochemistry? One of the substances involved in a titration must be used as a standard for which the amount of substance present is accura

What is an oligopeptide, What is an oligopeptide? How is it different from ...

What is an oligopeptide? How is it different from a polypeptide? Peptide is the molecule produced by the union of amino acids through the peptide bond. Oligopeptide is a peptid

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