Osmoregulation in protozoans, Biology

Assignment Help:

Osmoregulation in Protozoans

Osmoregulation or water balance in protozoa is accomplished by contractile vacuoles. One to several contractile vacuoles may be present within the animal which may or may not have fixed sites in the cytoplasm and may have contributory canals or other vesicles opening into it.

These are water and ion regulating structures, acting as pumps to remove excess water from the cytoplasm. All freshwater protozoans have functioning systems of contractile vacuoles whereas, marine and parasitic forms have these less frequently.


Related Discussions:- Osmoregulation in protozoans

Mammalian heart, Mammalian Heart The division of heart and separation ...

Mammalian Heart The division of heart and separation of systemic and pulmonary circulation is complete in birds and mammals. The structure of mammalian heart and also how the

Explain cancer and inhibition of tumorigenesis, Explain Cancer and Inhibiti...

Explain Cancer and Inhibition of Tumorigenesis? Polyphenols appear to play a preventive role although the molecular mechanisms of action and applicability to human cancer preve

Consequences of population growth, T he effects of unlimited population gro...

T he effects of unlimited population growth are as follows: 1.         Increase in unemployment. 2.          Low per capita income. 3.         Low living standard

Pineal gland, PINEAL GLAND (EPIPHYSIS CEREBRI) - It develops from th...

PINEAL GLAND (EPIPHYSIS CEREBRI) - It develops from the ectoderm of the embryo. The pineal gland is located between the cerebral hemispheres, where it protrudes from the

Draw a diagram of transverse section of mammalian bone, Draw a diagram of t...

Draw a diagram of transverse section of mammalian bone and label the following parts in it: (i) Haversian canal (ii) Lacuna containing osteocytes (iii) Canaliculi

Explain cell surface membrane, Diagram of a cell surface membrane.  ...

Diagram of a cell surface membrane.  State the width of a cell surface membrane. (i) On which side of the membrane, shown in Figure, X or Y, is the cytoplasm of the cell?

What are bacteriophages, What are bacteriophages? Bacteriophages are vi...

What are bacteriophages? Bacteriophages are viruses specialized in parasitism of bacteria. They are used in genetic engineering as molecular cloning vehicles to insert recombin

Maturation phase, Maturation Phase The Maturation phase characterizes...

Maturation Phase The Maturation phase characterizes he transformation of diploid primary spermatocytes into haploid spermatids. The primary spermatocyte divides meiotically t

What is rearrangement reaction, PREPARATION OF BENZILIC ACID 1.  What i...

PREPARATION OF BENZILIC ACID 1.  What is rearrangement reaction? The reactions in which the carbon of the molecule is rearranged to give a structural isomer of the original

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