What is Definition of Osmosis – Meaning , Types & Osmotic Pressure

Posted on May 20th, 2021
osmosis definition , what is osmosis; osmosis

Osmosis Definition – Meaning, Types & Osmotic Pressure

What is Osmosis?

The cumulative movement of soluble molecules across the semiconductor membrane is referred to as osmosis. Since the motion is downward, from high density to low density, it is close to spreading. Osmosis, on the other hand, requires movement through a semi-permeable membrane. Without this element, it cannot be called osmosis.

The passage of high-molecular-weight water molecules into a solution of low-molecular-weight water molecules through the partially permeable membrane of a cell is referred to as osmosis in biology.

Just a few molecules or ions can move through a partially permeable membrane (also known as a selectively permeable membrane).

The passage of soluble molecules from a region with a high concentration of solvent to a region with a low concentration is referred to as osmosis. The equilibrium between the two sides of the semicircular membrane is gradually formed (same solvent density on both sides of the semicircular membrane).

School Online Class
School Online Class

What are Solvents and solute?

Chemical solutions are linked to osmosis. A solvent and a solute make up the solution. The end result of a solute dissolving in a solvent is known as a solution. Brine is an example of a solution; the solute is salt, and the solvent is water.


How many types of osmosis?

types of osmosis
types of osmosis


Cells have three types of solutions in biology: isotonic, hypotonic, and hypertonic. Due to osmosis, various types of solutions have different effects on cells.


Within and outside the cell, an isotonic solution has the same concentration. An isotonic solution, for example, is described as a cell that contains the same amount of salt as the surrounding water or liquid. The solvent does not have a clean circulation in these cases; the amount of water entering and leaving the cell membrane is similar in these cases.


There is a high concentration within the cell and outside the cell in a hypotonic solution. When this occurs, more solvents will enter the cell than will exit, bringing the concentration of the solvent back into equilibrium.


A hypertonic solution dissolves more both inside and outside the cell than a hypotonic solution. More solvents can enter the cell in this form of solution to reduce the concentration of solvents outside the cell.


How does osmosis affect cells?

Since plants and animals can tolerate various amounts of water, osmosis has different effects on them. Plant cells, on the other hand, need more water than animal cells and, due to their thick cell walls, do not burst into hypotonic solutions. Plant cells thrive in hypotonic solutions. An animal cell’s optimum location should be in an isotonic solution. Its cells become harder and no longer filled with water and the plant’s leaves dry out.

Water is ejected from animal and plant cells in a hypertonic solution, causing the cells to shrink (in plants it is called plasmolyzation). When slugs and snails are sprayed with salt, water leaves their cells to offset the high concentration of salt outside the cells, causing them to shrink and die.


What are the examples of osmosis?

This is the method by which plants extract water from the soil. Since the plant has a higher concentration of condensate than the soil around the roots, water flows to the roots. Plants’ guard cells are affected by osmosis. These are the cells that open and close at the base of the leaves to enable gas exchange. When plant cells are filled with water, the guard cells swell and the stomata open, allowing tiny holes to take in carbon dioxide and expel oxygen.

Freshwater and saltwater fish enter too much water or exit the cells when put in water with a salt concentration. Humans are also affected by osmosis; a cholera patient’s stomach is dominated by bacteria, and the gut is unable to absorb water. This can cause serious dehydration and, in extreme cases, death.


What is osmotic pressure?

The minimum pressure that can be applied to a solution to avoid the movement of soluble molecules across the semiconductor membrane is known as osmotic pressure (osmosis). This is a collision property that is affected by the soluble particle density in the solution. This can be calculated with the help of the following formula:

π = iCRT


π is the osmotic pressure

I am not the Van Hoff factor

The molar density of solvent in Si solution

R is the universal gas constant

T is the temperature

Jacobs van Hoff, a Dutch chemist, suggested this relationship between a solution’s osmotic pressure and the molar density of its solvent. It’s worth noting that this equation is only correct for solutions that are compatible with one another.


What is the importance of osmosis?

importance of osmosis
importance of osmosis


i. Osmosis induces a cell tug that controls the movement of plants and plant organs.

ii. Osmosis also regulates the deflection of fruit and sparse.

iii. High osmotic pressure protects plants from drought damage.

iv. This has an effect on nutrient transport and metabolic waste product release.

v. As a result, water is drained from the soil and reaches the plant’s upper sections through the silt.

vi. It maintains a balance between the amount of water and the intracellular fluid to keep an organism’s internal environment stable.

vii. It preserves the integrity of the cells. This is the mechanism by which plants sustain water levels despite ongoing evaporation shortages.

viii. This procedure controls cell proliferation.

Takshila learning throws light on the concept of osmosis combined with a simple language and illustrative supporting material. The mentors at Takshila learning make it a point that children learn with a clear understanding. Takshila learning has one of the best learning content and able mentors in place for the benefit of the aspirants.

Takshila learning lets you learn about osmosis and its importance


Prepare all subjects online class 9 with our Animated Video lectures and Interactive Live Online Classes

Here at Takshila Learning, we provide  School Online Classes from Preschool to Class 12 for all subjects. We provide the best online tuition classes for Class 1 to 12th Class and other classes that comprise Animated Video lectures and Online Live Classes that will help students to grasp concepts easily. We also provide Worksheets & Assignments, Doubt sessions, Free Encyclopedia, NCERT Solutions for Class 6 to 12, and Exam Guru to monitor your progress, i.e., subject-wise and topic-wise. So now Enjoy E-Learning with Takshila Learning.

Learning is fun now!

Enroll today & Get Free Demo Class!


Subscribe to our social channel.

facebook Insta Pinterest youtube

Call at 8800999280 / 8800999283 / 8800999284 fill the form for any other details:



Tag – osmosis definition; what is osmosis; osmosis meaning; Types of Osmosis; examples of osmosis; What is osmotic pressure; what is osmosis class 9; live online classes; 


Share and Enjoy !

0 0