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

Why bacteria can be transmitted from person to person, Identify three ways ...

Identify three ways that bacteria can be transmitted from person to person. Diseases affecting nerves contain botulism and tetanus; diseases affecting the intestine include sa

Respiratory system - developmental changes, Respiratory System - Developmen...

Respiratory System - Developmental Changes after Birth The new-born's lungs are collapsed and need powerful breaths to inflate them; airways too are small, offering remarkable

Pneumothorax, Pneumothorax Entry of air in the pleural cavity is calle...

Pneumothorax Entry of air in the pleural cavity is called pneumothorax. It may be spontaneous, result of penetrating or non-penetrating injuries. Closed Pneumothorax

The non-oxidative phase generates ribose precursors, The non-oxidative ph...

The non-oxidative phase  generates  ribose precursors The non-oxidative phase of  the pathway,  including the following reactions, converts pentose-5-phosphate to other sugars.

#title, WHAT IS THE FUNCTION OF CELL COAT

WHAT IS THE FUNCTION OF CELL COAT

Spinal nerves, Spinal nerves: They take their origin from the spinal...

Spinal nerves: They take their origin from the spinal cord. They are the mixed nerves having both sensory and motor fibres. There are 31 pairs of spinal nerves. The se

Can you explain non-restrictive ventricular septal defect, Q. Can you expla...

Q. Can you explain Non-restrictive ventricular septal defect? In non-restrictive VSD PA pressures are elevated hence VSD gradient is low. Non-restrictive VSD is larger in s

Deficiency diseases-fatty liver or fat cow syndrome , Fatty liver or fat co...

Fatty liver or fat cow syndrome (hepatic lipidosis, pregnancy toxaemia in cattle) Fatty liver or hepatic lipidosis is a major metabolic disease of dairy cows. It is caused by

Limitations in the diagnostic use of stress echocardiography, Q. Limitation...

Q. Limitations in the Diagnostic use of Stress Echocardiography? Although the presence of coronary artery disease is readily recognised in the setting of multivessel disease, a

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