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

Define about the concept of sports nutrition, Define about the concept of s...

Define about the concept of sports nutrition? The concept of sports nutrition was evolved fundamentally with integration of different disciplines in order to collectively striv

Zoonoses disease-cryptococcosis, Cryptococcosis An opportunistic infect...

Cryptococcosis An opportunistic infection, caused by Cryptococcus neoformans is affecting immunocompromised individuals mainly with impaired cell mediated immunity. The disease

What is the molecular formula of glucose, What is the molecular formula of ...

What is the molecular formula of glucose? How can its structural formula be described? The molecular formula of glucose is C6H12O6. Structurally glucose is a hexagonal ring

According to their morphology how are bacteria classified, According to the...

According to their morphology how are bacteria classified? Bacteria present dissimilar morphological patterns. A bacterium can be classified into coccus, bacillus, vibrion or s

Chloroplast, Chloroplast In plants, chloroplasts are the essential o...

Chloroplast In plants, chloroplasts are the essential organelles for carrying out photosynthesis. Chloroplasts are found in all green plants. Chloroplast occurs mainly

Peculiarities of mitosis - cleavage, Peculiarities of Mitosis - Cleavage ...

Peculiarities of Mitosis - Cleavage From the following you will learn that the mitosis in the phase of cleavage has some striking peculiarities: a) Synchronization of cell

Anti-diuretic hormone, who discovered it? and what is it''s physiologic fun...

who discovered it? and what is it''s physiologic functions?

Procedures for diagnosis - nucleic acid hybridization, Nucleic acid hybridi...

Nucleic acid hybridization: This is a process by which a suitably labeled DNA or RNA from a known infectious agent is used to probe its complementary sequence unique to t

Genetics , Genetics Genetics is the study of heredity. It is an ancien...

Genetics Genetics is the study of heredity. It is an ancient discipline. At least 4000 years ago, in Sumeria, Egypt and other parts of the world, farmers recognized that they

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