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

Historical development of psychiatric nursing, HISTORICAL DEVELOPMENT OF PS...

HISTORICAL DEVELOPMENT OF PSYCHIATRIC NURSING: History is a  record of opportunities, recognized and informed,  that produce profound changes in a given field. History of psyc

Explain circulatory support and types of shock, Explain circulatory support...

Explain circulatory support and types of shock? CIRCULATORY SUPPORT 1) A "shock" state is characterised by hypoperfusion of tissue and cellular hypoxia. Circulatory suppo

What is membrane, Q. What is membrane? Membrane is any delicate sheet t...

Q. What is membrane? Membrane is any delicate sheet that separates one region from another blocking or permitting completely or selectively the passage of substances. The skin,

Cyanotic congenital heart disease, Cyanotic Congenital Heart Disease   ...

Cyanotic Congenital Heart Disease   So far we have discussed the acyanotic congenital heart disease. Now we shall discuss some of  the main cyanotic congenital heart diseases.

Driving force - mineral nutrition, Driving Force - Mineral Nutrition ...

Driving Force - Mineral Nutrition Let us now find out what is the driving force involved in protein mediated transport. Many membrane transport proteins allow specific solute

What anatomical direction with respect to occipital cortex, The frontal cor...

The frontal cortex is in what anatomical direction with respect to the occipital cortex? a. anterior b. posterior c. sagittal d. inferior

Secretory proteins, Proteins destined to be secreted from the eukaryotic ce...

Proteins destined to be secreted from the eukaryotic cell are synthesized by ribosomes bound to the RER (rough endoplasmic reticulum). As the protein is synthesized it is transloca

Issues impacting health and development - inequity, Normal 0 fa...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

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