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 importance of uterine glycogen-producing glands, What is the im...

What is the importance of the uterine glycogen-producing glands? The uterine glands produce glycogen that can be degraded into glucose to nourish the embryo before the complete

What are heterochromatin and euchromatin, What are heterochromatin and euch...

What are heterochromatin and euchromatin? Chromatin is uncondensed nuclear DNA, the typical DNA morphology in interphase (the phase of the cell cycle in which the cells is not

Describe valvular ps murmur and their characterstics, Describe Valvular PS ...

Describe Valvular PS Murmur and their characterstics? Characteristic: Harsh crescendo-decrescendo murmur along the left sternal border and loudest at pulmonary area, conducted

What are dna ligases, What are DNA ligases? How do these enzymes participat...

What are DNA ligases? How do these enzymes participate in the recombinant DNA technology? DNA ligases are enzymes specialized in tying the complementary DNA chains that produce

Cells, describe the cell theory and its exception

describe the cell theory and its exception

What do you mean by linnaeus binomial system, Q. What do you mean by Linnae...

Q. What do you mean by Linnaeus binomial system? Almost a century after Bauhin the great Swiss naturalist Carolus Linnaeus (1707-1778) published the two monumental works the "S

Cells, what are the buildings blocks of life?

what are the buildings blocks of life?

Explain the stages in taxonomic procedures - alpha taxonomy, Explain the St...

Explain the Stages In Taxonomic Procedures? Divided into three levels or phases: 1) Alpha (α) phase, 2) Beta (β) phase, 3) Gamma (γ) phase. Alpha Taxonomy The

Importance of compliance, It is important to explain to the patient about i...

It is important to explain to the patient about importance of taking treatment regularly. In case he misses the dose or takes medicine or insulin irregularly, explain the side effe

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