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Biology 9th Class English Medium Online Test MCQs With Answers

Question # 1

When an enzyme is no longer able to work, it is said to be:

Choose an answer

Catalyzed

Dead

Cofactored

Denatured

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Question # 2

The Molecule which have low molecular weight are called.

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Macromolecules

Micromoleules

Organic Molecules

In organic Molecules

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Question # 3

........................ helps in grinding of food .

Choose an answer

Tongue

Teeth

Salivary glands

All

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Question # 4

Aerobic respiration needs free ............. .

Choose an answer

Carbon

Nitrogen

Oxygen

None

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Question # 5

An example of bio molecule is.

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Proton

Protein

Iodine

Chlorine

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Question # 6

Which of the followings is area of supply of blood in plants?

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Leaf

Stem

Fruit

All

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Question # 7

............... metabolism is a major component stem & leaf growth.

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Nitrogen

Oxygen

Carbon

All

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Question # 8

When a plant was kept in darkness for many days, its leaves turnes yellow. Why?

Choose an answer

Leaves could not yet oxygen and so there was no photosynthesis

Leaves could not get light and so there was no respiration

Leaves could not get oxygen and so there was no respiration

Leaves could not get light and so there was no photosynthesis

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Question # 9

which of these does not represent unicellular organization.

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Amoeba

volvex

Bacteria

Paramecium

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Question # 10

Biodiversity means :

Choose an answer

Variety with in a species

Variety among the species

Variety within a species and among the species

None of these

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Question # 11

Cell theory was proposed by:

Choose an answer

Robert Hooke

Schwann

Schleiden

Both B and C

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Question # 12

How many cells die each day due to apoptosis in humans?

Choose an answer

50 - 70 Billions

50 - 70 Millions

50-70 trillions

20 - 30 Millions

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