Question

what is vacuoles function

Answer 1

Vacoules are fluid filled membrane bound clear spaces in the cytoplasm.

They are filled with water and a variety of substances like minerals, sugars , carbohydrates, organic acids , pigments and metabolic wastes in solution .

The membrane of the vacoule is called tonoplast and the liquid they contain is cell sap .

In mature plant cells , a large vacuole occupies most of the central part of cell .

This pushes the nucleus and other cell organelles to the periphery of the cell . These vacoules are called sap vacoules .

In animal cells , the vacoules are generally absent . But if they are present then , they are much smaller.

Food vacoules and contractile vacoules occur in unicellular animals such as Amoeba and paramecium .

Functions of vacoules :

• They keep the cells turgid and provide rigidity and support.

• They store food material and waste products .

• They help in maintaining the water balance and in extraction .

Answer 2

$\huge\textbf{VACUOLE}$ is a membrane bound space found in cytoplasm. It is bound by a single membrane called tonoplast. 

In plant cells vacuole is larger than animal cell. In plant cells it occupies space up to 90%.


$\textbf{Types of vacuoles :-}$

1. Sap vacuoles 

2. Contractile vacuole 

3. Gas vacuole

4. Food vacuole

$\textbf{Function :-}$

1. Tonoplast facilitate the transport of ions against the concentrate gradients into the vacuoles in plant.

2. They may serve as waste deposit bins.

3. It maintain the tuger of plant cell.

4. It also stores food.

→ It contains; water containing organic and inorganic molecules including enzymes.

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