When a cell is put in a solution of higher concentration?

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Answer:

A cell placed in solution swells up. The solution is a hypotonic solution.

In the hypotonic solution, the cell will gain water by osmosis and will swell up.

Hypertonic solution

Hypertonic solution is the one that contains more concentration of solutes relative to the solute concentration in the cytoplasm of the cell.

When cells are put in such a solution, water molecule shift from their higher concentration to their lower concentration.
This movement of the water molecule is called osmosis, and it is because everything in the universe tries to reach an equilibrium.
The solution outside the cell has a higher soluble concentration than inside the cell. Thus, the water molecules move outside the cell from the inside.

Articles to Explore:

What is an isotonic solution?
What is a Hypertonic solution?

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B is correct ans. As it will lose water to make both concentration equal.

No,if concentration is higher then it will become HYPOtonic solutionSo, it will swell and endosmosis takes placeSo,A is the answer

Correct Answer: B

Solution :
If a cell is placed in such a solution which has higher concentration of solute i.e., hypertonic solution, then the water moves out of the cell i.e., exosmosis occurs. As a result cell shrinks.

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Correct Answer: B

Solution :
Cell wall exerts a pressure on the cytoplasm in the opposite direction. It prevents bursting of the cell in hypotonic solution and limits endosmosis to a certain extent.

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Correct Answer: B

Solution :
The organelle in option (B) is Golgi body. The Golgi body controls the secretion and transport of materials in and out of cell. Thus, it is often referred to as 'traffic police' of the cell.

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Correct Answer: C

Solution :

Mitochondria are small sphere or short rod shaped organelles that are double membrane. They are the main seat of cell respiration. They bring about stepwise oxidation of food stuffs and produce energy.

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Correct Answer: C

Solution :
Under the sunlight, alga photosynthesises and produces starch. Photosynthesis is performed by chloroplast. As cell X lacked chloroplast, it will not make starch while the cell Y will make it. Iodine turns starch into blue-black colour. Cell Y made starch by photosynthesis, thus it will turn blue-black with iodine solution.

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Correct Answer: B

Solution :
Stroma or matrix is the site of dark reaction or \[\text{C}{{\text{O}}_{\text{2}}}\], fixation of photosynthesis, whereas granum is the site of light reaction of photosynthesis during which assimilatory power is produced.

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Correct Answer: A

Solution :
The movement of water from a region of its higher concentration to a region of its lower concentration through a semi-permeable membrane is called osmosis. Since, concentration of water is high in solution 1, therefore, water will move from solution 1 to solution 2 by the process of osmosis.

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Correct Answer: D

Solution :

Lysosomes help in waste disposal in the cell. They help to keep the cell clean by digesting any foreign material as well as worn-out cell organelles. Hydrolytic enzymes present in the lysosomes digest these foreign particles and worn-out cell organelles.

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Correct Answer: B

Solution :
A secretory cell should have abundant RER in its cytoplasm for production of large quantities of protein.

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Correct Answer: D

Solution :
Shrinkage of the protoplast of a plant cell from its cell wall under the influence of a hypertonic solution is called plasmolysis. If we put a Rheo leaf in a concentrated salt/ sugar solution, it will cause exosmosis or withdrawal of water from cytoplasm and then the central vacuole of cell. As a result, the size of cytoplasm as well as central vacuole decreases and hence protoplast reduces. The plasma membrane gets withdrawn from the cell wall and a clear space is seen between the cell wall and protoplast of the cells.

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Correct Answer: C

Solution :
The part labelled 'b' is called grana where light reaction of photosynthesis takes place. The part labelled 'c' is intergranal thylakoid. Photosynthetic pigments such as chlorophyll are present only in thylakoid membranes (grana + intergranal thylakoids) and not in stroma.

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Correct Answer: C

Solution :
A semipermeable membrane allows only solvent molecules to pass through it.

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Correct Answer: A

Solution :
Figures 'P', 'Q', 'R' and 'S' represent mitochondrium, vacuole, chloroplast and ribosome, respectively.

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Correct Answer: B

Solution :
Sugar solution is hypertonic to cell sap of potato, whereas water acts as a hypotonic solution to it. When the potato strip is placed in water, its cells will gain water by osmosis, resulting in increased in size of potato strip. When the potato strips are put in sugar solution of different concentrations, the cells will lose water resulting in decrease in the size of strip. As only potato strip placed in liquid 'Q' shows increase in length, this shows that liquid 'Q' is water.

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Correct Answer: C

Solution :
In the given key, different organelles are as follows: P - Nucleus, Q - Mitochondrium, R - Chloroplast, S - Lysosome and T - Ribosome