Chapter 2 – Cell: The Building Block of Life

29 questions · Class 9 Science

1

The cell membrane of a cell is made up of proteins and lipids.

SA (Short)
2

Where does a cell come from?

VS (Very Small)
3

How have technological interventions facilitated the creation of new knowledge in understanding the world beyond the naked eye?[Pg. No. 8]

SA (Short)
4

Do white flowers contain any pigment?

SA (Short)
5

Draw a well-labelled schematic diagram of a plant or an animal cell using these clues:

LA (Long)
6

Instead of many small ones, why does a cell not have a single giant mitochondrion?

SA (Short)
7

If the skin cells start dividing by meiosis instead of mitosis, what do you think will happen to a cut on the skin?

SA (Short)
8

Differentiate between the following pairs of terms based on the clues given in parentheses:

SA (Short)
9

Look at the diagram of a cell given below.

SA (Short)
10

Two similar animal cells are placed in two different solutions:• Cell X is placed in pure water.• Cell Y is placed in a concentrated salt solution.Cells are observed after some…

MCQ (Multiple Choice)
11

Two students, Renu and Rohit, were having a discussion on the plastids.

SA (Short)
12

Mitochondria and chloroplasts are two important organelles in a plant cell.

LA (Long)
13

Which of the following option(s) of the pairs of cell organelles are correctly placed under the given categories?

MCQ (Multiple Choice)
14

Which of the following pairs of cell organelles contains DNA?

MCQ (Multiple Choice)
15

A researcher carried out an experiment in which she took two carrots of similar size.

SA (Short)
16

Carry out the given experiment:Take four peeled potato halves and scoop each one out to make potato cups.

LA (Long)
17

Identify the pair that incorrectly matches the cell organelle with its function.

MCQ (Multiple Choice)
18

Indicate the presence or absence of following structures in bacterial and animal cells: Structures in a CellBacterial CellAnimal CellChromosomeNucleusMitochondriaGolgi…

SA (Short)
19

Which phenomenon inhibits the formation of tumors in the human body?

SA (Short)
20

What outcome do you expect, if all the mitochondria are removed from a eukaryotic cell?

SA (Short)
21

What would happen if gametes are formed by mitotic divisions?

SA (Short)
22

A farmer, Deepa, was very happy with the harvest of amla (Indian Gooseberry) and lemons on her farm.

CB (Case Based)
23

How is the cell structural and functional unit of life?

SA (Short)
24

What if mung bean seeds are kept in a concentrated solution after soaking in water for 12 hours?

SA (Short)
25

How does a cell multiply?

SA (Short)
26

What consequences would you predict for a plant cell if its cell wall were to become as flexible as a cell membrane?

SA (Short)
27

Why is it important to cut the two potato pieces in roughly equal size and measure their initial weight before placing them in different liquids?[Pg. No. 14]

SA (Short)
28

What argument would you give for the necessity of a cell wall in plants usually fixed in one place versus in animals usually moving from one place to the other?[Pg. No. 14]

SA (Short)
29

Some cells are specialised to perform specific functions.

SA (Short)