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Class 9 MCQs on The Fundamental Unit of Life

Total questions: 40

Worksheet time: 20mins

Name
Class
Date
1.

Which of the following is present in plant cells but absent in animal cells?

a)

Mitochondria

b)

Ribosomes

c)

Plastids

d)

Nucleus

2.

The process of movement of water through a selectively permeable membrane is called—

a)

Diffusion

b)

Osmosis

c)

Active transport

d)

Endocytosis

3.

A plant cell placed in hypertonic solution undergoes—

a)

Turgidity

b)

Plasmolysis

c)

Endosmosis

d)

No change

4.

The term protoplasm refers to—

a)

Cytoplasm only

b)

Nucleus only

c)

Cytoplasm + Nucleus

d)

Plasma membrane

5.

The “powerhouse of the cell” is—

a)

Golgi body

b)

Mitochondria

c)

Ribosome

d)

Chloroplast

6.

Ribosomes are mainly involved in—

a)

Lipid synthesis

b)

Protein synthesis

c)

Energy production

d)

Storage

7.

The cell wall is made of—

a)

Fat

b)

Protein

c)

Cellulose

d)

Glycogen

8.

Which organelle is called the “suicidal bag”?

a)

Ribosome

b)

Lysosome

c)

Vacuole

d)

Centrosome

9.

The jelly-like substance inside a cell is—

a)

Matrix

b)

Cytoplasm

c)

Stroma

d)

Grana

10.

Which organelle modifies and packages materials?

a)

ER

b)

Golgi apparatus

c)

Ribosome

d)

Lysosome

11.

A cell placed in hypotonic solution will—

a)

Shrink

b)

Burst

c)

Become turgid

d)

Undergo plasmolysis

12.

The cell membrane is mainly composed of—

a)

Protein and DNA

b)

Lipid and protein

c)

Cellulose

d)

Starch

13.

Which of these is not found in prokaryotes?

a)

Cell membrane

b)

Ribosomes

c)

Mitochondria

d)

Cytoplasm

14.

Nucleus is absent in—

a)

Bacteria

b)

Amoeba

c)

Paramecium

d)

Fungus

15.

Chlorophyll is found in—

a)

Chromoplast

b)

Chloroplast

c)

Leucoplast

d)

Mitochondria

16.

The plasma membrane allows—

a)

Everything to enter

b)

Nothing to enter

c)

Only gases to pass

d)

Selected substances to enter or leave

17.

Which cell organelle helps in detoxification?

a)

Rough ER

b)

Smooth ER

c)

Golgi body

d)

Ribosome

18.

Which structure gives plant cells their rigidity?

a)

Cell membrane

b)

Nucleus

c)

Vacuole

d)

Cell wall

19.

Which of these stores water, wastes, and food in plant cells?

a)

Lysosome

b)

Vacuole

c)

Ribosome

d)

Centrosome

20.

The basic unit of life is—

a)

Tissue

b)

Cell

c)

Organ

d)

Organ system

21.

Diffusion occurs due to—

a)

Energy expenditure

b)

Pressure

c)

Random movement of particles

d)

Enzymes

22.

The shrinkage of cytoplasm from the cell wall is called—

a)

Deplasmolysis

b)

Turgidity

c)

Plasmolysis

d)

Osmosis

23.

A selectively permeable membrane allows—

a)

All particles

b)

Large molecules only

c)

Small molecules only

d)

Only some selected molecules

24.

The living content of cell is—

a)

Cytoplasm

b)

Cell wall

c)

Protoplasm

d)

Vacuole

25.

Which is the control centre of the cell?

a)

Ribosome

b)

Nucleus

c)

Mitochondria

d)

Golgi body

26.

Chromosomes become visible during—

a)

Interphase

b)

Mitosis

c)

Photosynthesis

d)

Osmosis

27.

Grana are stacks of—

a)

Cristae

b)

Thylakoids

c)

Ribosomes

d)

Matrix

28.

The organelle responsible for secretion is—

a)

Ribosome

b)

ER

c)

Golgi apparatus

d)

Vacuole

29.

Nucleolus is the site of—

a)

Lipid synthesis

b)

Ribosome formation

c)

ATP production

d)

DNA replication

30.

What enables plant cells to withstand much greater changes in surroundings?

a)

Nucleus

b)

Mitochondria

c)

Vacuole

d)

Cell wall

31.

Which of these is single-membrane bound?

a)

Nucleus

b)

Mitochondria

c)

Vacuole

d)

Chloroplast

32.

Which organelle is responsible for ATP production?

a)

Ribosomes

b)

Mitochondria

c)

Lysosomes

d)

Golgi body

33.

In onion peel cells, the nucleus is pushed to the periphery due to—

a)

Cell wall

b)

Cytoplasm

c)

Vacuole

d)

Chloroplast

34.

Leucoplasts are mainly for—

a)

Making food

b)

Color

c)

Storage

d)

Respiration

35.

Which statement about cell wall is wrong?

a)

It is freely permeable

b)

It is made of cellulose

c)

It gives shape

d)

It controls the movement of substances

36.

Which cells are smallest in size?

a)

Plant cells

b)

Animal cells

c)

Bacterial cells

d)

Fungal cells

37.

The process opposite to plasmolysis is—

a)

Deplasmolysis

b)

Exosmosis

c)

Cyclosis

d)

Diffusion

38.

Which helps in intracellular digestion?

a)

Vacuole

b)

Lysosome

c)

Ribosome

d)

Golgi body

39.

A membrane-bound organelle is absent in—

a)

Amoeba

b)

Blue-green algae

c)

Paramecium

d)

Yeast

40.

The function of cell membrane is—

a)

Providing rigidity

b)

Controlling entry and exit

c)

Photosynthesis

d)

Storage

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