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Class 9

Explore popular questions from The Fundamental Unit of Life for Class 9. This collection covers The Fundamental Unit of Life previous year Class 9 questions hand picked by experienced teachers.

The Fundamental Unit of Life

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Q 1. Cell are regarded as ______ of a building

A

Foundation

Bricks

C

Cement

D

None of these

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Q 2. Amoeba is a/an

Animal

B

Plant

C

Bacteria

D

Fungus

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Q 3. Leaves appear green due to presence of

A

Haemoglobin

B

Iron

Chlorophyll

D

CO{tex}_2{/tex}

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Q 4. A compound microscope contain

A

Two pair of lens and one pair of adjustor

B

One pair of lens and one pair of adjustor

One pair of lens and two pairs of adjustor

D

All of the above

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Q 5. What will be the surface area and volume of a cuboidal cell of human having sides of 2 mm

24 mm2 and 8 mm3 respectively

B

6 mm2 and 8 mm3 respectively

C

24 mm2 and 6 mm3 respectively

D

12 mm2 and 36 mm3 respectively

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Q 6. A solution is

A

A homogenous mixture of two solvent

B

Something dissolved in water

A homogenous mixture of solute and solvent

D

A homogenous mixture of two solute

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Q 7. What do you think a cell have to control its functioning?

A

Membrane

Nucleus

C

Mitochondria

D

All of these

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Q 8. Which among them according to you contain maximum water

A

Mango fruit

Musk melon

C

Gourd

D

Pomegranate

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Q 9. "Cell is a unit of life" (OR the term cell was proposed by)

A

Malpighi

B

Leueenhoek

C

Schleiden

Hooke

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Q 10. Plant cell is characterized by

A

Presence of wall, absence of vacuole

Presence of wall, vacuole and starch and the absence of centriole or centrosome

C

Presence of vacuole and absence of plastids

D

Presence of centriole and lysosomes and absence of plastids

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Q 11. The main difference between an animal and a plant cell is

A

Plant cells lack rigid cell wall

Animal cells lack rigid cell wall

C

Plant cells possess small vacuoles

D

Animal cells possess large vacuoles

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Q 12. Generally the smaller the cell

A

The larger the nucleus

B

The smaller the nucleus

It will be metabolically more active

D

It will be metabolically less active

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Q 13. Example of unicellular animal is/are:

A

Amoeba

B

Paremecium

C

Plasmodium

All of these

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Q 14. Who applied cell theory to plants?

A

Schwann

Schleiden

C

Swanson

D

Jensen

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Q 15. Cell theory states that

A

All living cells do mitosis and meiosis

B

All cells are living

C

All cells have nucleus

Cell is structural unit of all living organisms

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Q 16. Semipermeability is the property of

Cell membrane

B

Cell wall

C

ER & Nuclear membrane

D

All of these

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Q 17. Major part of cell membrane is

Lipid

B

Protein

C

Carbohydrate

D

Nucleic acid

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Q 18. Plasma membrane

A

Controls the passage of water and soluble substances in and out of the cell

B

Helps in protein synthesis

C

Serves as a semipermeable membrane

Both (A) and (C)

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Q 19. All outermost membrane enclosing the contents of a plant cell is called

A

Tonoplast

B

ER

Plasmalemma

D

Cell wall

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Q 20. Plasma membrane or unit membrane is made up of

A

Phosphoprotein and carbohydrate

Protein and fat/phospholipid

C

Phospholipid/fat and carbohydrate

D

Carbohydrate and fat/phospholipid

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Q 21. What is the latest model for the structure of plasmalemma

A

Unit membrane model

Fluid mosaic model

C

Molecular sieve model

D

Sandwich model

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Q 22. Controlling centre of a cell is

Nucleus

B

Nucleolus

C

Chloroplast

D

Ribosome

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Q 23. What happen to a cell, if its nucleus is removed

Cell dies

B

Its catabolism increases

C

Its metabolism decreases

D

It becomes non-osmotic

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Q 24. An anucleated living plant cell is

A

Vessel

B

Tracheid

Sieve cell

D

All of the above

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Q 25. A Prokaryotic cell does not possess

Nuclear membrane

B

Plasma membrane

C

Cell wall

D

Cytoplasm