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

What is the health monitoring of infant, Explain the Health Monitoring of I...

Explain the Health Monitoring of Infant? Infections are a major cause of malnutrition in children. For many of the preventable early childhood diseases, vaccines are now avail

Post removal technique using prs kit, Post removal Technique using PRS kit ...

Post removal Technique using PRS kit -Transmetal efficiently doming the post head . -Select suitable sized trephine . -Place drop of RC prep on the post head as lubrican

What is the kind of circulatory system present in annelids, Q. What is the ...

Q. What is the kind of circulatory system present in annelids? In beings of the phylum Annelida the circulatory system is closed that is blood circulation takes place only with

Why the two dna polymerase proteins are oriented in opposite, Which of the ...

Which of the following best defines why the two DNA polymerase proteins that are held by the sliding clamp are oriented in opposite directions? A. The efficiency of replication

Define symptoms in nervous system of pernicious anaemia, Define symptoms in...

Define symptoms in Nervous system of pernicious anaemia? Parasthesia (numbness and tingling) occurs in fingers and toes.  Occasionally, there are objective signs of involvement

What is embryonic origin of the nervous system in vertebrate, How does the ...

How does the embryo turn from gastrula into neurula? How is the neural tube formed? What is the embryonic origin of the nervous system in vertebrates? The neurula stage is divi

Define some example of acidic and basic buffer, Define Some Example of Acid...

Define Some Example of Acidic and Basic Buffer? Frequently used example of acidic and basic buffer includes: - Acidic buffer: a mixture of CH 3 COOH (acetic acid) + CH 3 C

How establish a pure-breeding population of brown pigs, Would it be possibl...

Would it be possible to establish a pure-breeding population of brown pigs with a few black spots?

Explain about vitamins, Vitamins Vitamins, as you may already know, der...

Vitamins Vitamins, as you may already know, derive its name from the word 'Vital Amine'. These are the organic compounds required for normal metabolism, growth and developme

Why immune response involves the activities of proteins, The immune respons...

The immune response involves the activities of proteins, cells, and the lymphatic system.

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