Vacuoles, Biology

Assignment Help:

VACUOLES

They are of 4 types -

1.       Sap Vacuole -

Outer membrane of sap vacuole is called Tonoplast. Sap vacuole contains amino sugars, carotenoids, proteins, minerals etc. Matrix of sap vacuole is called Cell Sap. Sap vacuole helps in osmoregulation. Anthocyanine pigment is also present in cell sap, which is responsible for violet, yellow & orange colour.

2.       Contractile Vacuole -

These are present in protists. eg. Amoeba & Paramecium. C.V. helps in water balancing or osmoregulation, also helps in excretion.

3.       Food Vacuole -

These are present in protists. They store ingested food. These are also known as gastric vacuole, because they are analogue to elimentry canal of higher animals.

4.       Gas Vacuole -

These are present in Cyanobacteria or Photosynthetic green / purple bacteria. These are also known as pseudovacuole or air vacuole. Each gas vacuole protects from U.V. rays. Gas vacuole also help in buoyancy or floating. Proteineous membrane is also present around the gas vacuole.


Related Discussions:- Vacuoles

Defination of behaviour change communication, Q. Defination of Behaviour Ch...

Q. Defination of Behaviour Change Communication? Behaviour Change Communication (BCC) is an interactive process with communities to develop specific messages and methods using

What are the venous of the valves system, Q. What are the venous of the val...

Q. What are the venous of the valves system? What is their function? The valves of the venous system are structures inside the veins that permit blood to flow only in the norma

Physiognomy and pattern, Physiognomy and Pattern Physiognomy is the g...

Physiognomy and Pattern Physiognomy is the general appearance of vegetation as determined by the growth, form of dominant species. It may be considered a synthetic character

What do you mean by binomial nomenclature, Q. What do you mean by Binomial ...

Q. What do you mean by Binomial nomenclature? Binomial nomenclature is the naming of the individual entity and the group so produced through classification, according to the in

Kuch, how vagina is inserted in cock

how vagina is inserted in cock

What is blood typing?, What is blood typing? The Blood typing is the de...

What is blood typing? The Blood typing is the determination, by means of tests, of the classification of a blood sample concerning blood group systems (specially the Rh system

What is the modern darwinist theory, In the time of Darwin the results of M...

In the time of Darwin the results of Mendel's research on biological inheritance had not been published, Genetics was not yet developed, neither DNA nor the concept of genetic muta

Aeration, Aeration A well-aerated soil is one in which gases are availa...

Aeration A well-aerated soil is one in which gases are available to plant roots and other soil organisms, in sufficient quantities and in proper proportions to support their no

Fats, what are fats

what are fats

Excretory system, what is the excretory system of a crab?

what is the excretory system of a crab?

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