Lorica - body form protozoans, Biology

Assignment Help:

Lorica - body form Protozoans

It is a covering which unlike the theca fits loosely around the organism. It is a cup, bell or vase-like structure with one opening through which protrude the animal's appendages or the anterior part of the body. In solitary protozoans, the lorica may or may not possess a stalk. Cothumia which occur in couples, are contained in tectinous lorica and are stalked.

1616_Lorica - body form Protozoans.png

Figure: Cothurina

The protozoan nuclei are membrane bound, diverse in structure and method of division. Two basic types are found, vesicular with considerable\amount of nucleoplasm and the other compact. When more than one nucelus is present they are usually alike except in ciliates, where a massive compact macronucleus and one or more compact macronuclei are present. Cytoplasm can be distinguished as ectoplasm and endoplasm.

Ectoplasm appears transparent under light microscope and bears the base of the flagella or ciliia. The endoplasm appears granular and contains the nucleus and cytoplasmic organellps. The ectoplasm is more rigid and is in the gel state of a colloid while the endoplasm is in the sol or more fluid state.


Related Discussions:- Lorica - body form protozoans

Tissue synthesis for wound healing in nutritional care, Explain the Tissue ...

Explain the Tissue Synthesis for Wound Healing in Nutritional Care? Tissue proteins are synthesized only by amino acids brought to the tissues by circulating blood. The necessa

Explain the factors affecting the process of deep fat frying, Factors affec...

Factors affecting the process of deep fat frying. The common factors influencing the process of deep frying include: 1.  Heat- Frying temperatures ranging from 150 -190°C

Magnesium - mineral elements, Magnesium -  It is available in most of t...

Magnesium -  It is available in most of the plants, especially vegetables. By its deficiency diarrhoea is caused. Its important functions are - (a)      Along with c

How does the breathing process correct acidosis, Q. How does the breathing ...

Q. How does the breathing process correct acidosis? The increment of the respiratory frequency makes the body eliminate more carbon dioxide and to shift the equilibrium of the

Protection of plants against toxic substances, Protection of Plants against...

Protection of Plants against Toxic Substances Plants produce several toxic substances themselves and may also encounter the ones produced by other plants or present in the env

Describe the need for harmonization in clinical trials, Question 1: Des...

Question 1: Describe the need for Harmonization in clinical trials? Brief on the Revised ICH terms of reference and explain the structure of ICH? Need for Harmonization i

Determine the genotypes and phenotypes, Determine the genotypes and phenoty...

Determine the genotypes and phenotypes of the F1 generaiton from a colour blind father and a mother who is homozygous for normal colour vision

What is the digestive enzyme that acts within the stomach, What is the dige...

What is the digestive enzyme that acts within the stomach? Which type of food does it digest? What are the cells that produce that enzyme? The digestive enzyme that acts in the

Determine the nutritious meals to the elderly, Determine the nutritious mea...

Determine the nutritious meals to the elderly? The various considerations to be kept in mind for providing nutritious meals to the  elderly are highlighted herewith. Due

Middle lamella, MIDDLE LAMELLA It is thin, amorphous, intercellular ...

MIDDLE LAMELLA It is thin, amorphous, intercellular matrix between 2 adjacent plant cell. The cells of plant tissue generally cemented together by an intercellular matrix

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