(English Medium) ICSE Class 10 - CISCE Question Bank Solutions for Biology

While watching a scary movie, mention its effects on the following organs by the autonomous nervous system in the table given below: (one has been done for you as an example).

Two hungry boys (A and B) enter a restaurant and see the menu. Boy B starts salivating but not A. Explain the reason for this difference.

Differentiate between Diffusion and Osmosis (Definition)

Differentiate between Turgor pressure and Wall pressure (explain)

A candidate in order to study the process of osmosis has taken 3 potato cubes and put them in 3 different beakers containing 3 different solutions. After 24 hours, in the first beaker the potato cube increased in size, in the second beaker the potato cube decreased in size and in the third beaker there was no change in the size of the potato cube. The following diagram shows the result of the same experiment:

(i) Give the technical terms of the solutions used in beakers, 1, 2 and 3.
(ii) In beaker 3, the size of the potato cube remains the same. Explain the reason in brief.
(iii) Write the specific feature of the cell sap of root hairs which helps in absorption of water.
(iv) What is osmosis?
(v) How does a cell wall and a cell membrane differ in their permeability?

Give appropriate biological or technical terms for the following :

Movement of molecules of a substance from their higher concentration to lower concentration when they are in direct contact.

Differentiate between the following pairs on the basis of what is indicated in the brackets.

Hypotonic solution and Hypertonic solution [condition of a plant cell when placed in them]

A plant cell placed in a certain solution got plasmolysed. What was the kind of solution?

Movement of molecules of a substance from the region of their higher concentration to the region of their lower concentration without the involvement a separating membrane, is called

Osmosis and diffusion are the same except that osmosis there is:

The highest water potential (capacity to move out higher concentrated solution) is that of ______.

The space between the cell wall and plasma membrane in a plasmolysed cell is filled with ______.

What is responsible for guttation?

The most appropriate characteristic of a semipermeable membrane is that

Name the following: 

The condition of a cell placed in a hypotonic solution. 

Give the equivalent terms for the following: 

Pressure of the cell contents on the cell wall 

Complete the following statements: 

Hypotonic solution is one in which the solution kept outside the cell has lower solute concentration than ……………… the cell. 

The bending movements of certain flowers towards the sun and the sleep movements of certain plants at night are examples of ______.

When placed in a more concentrated solution, the cell contents will ______.

Differentiate between the following: 

Plasmolysis and deplasmolysis