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Biology 10th Class English Medium Chapter 1 Online Test MCQs With Answers

Question # 1

In wood seems and roots the gaseous:

Choose an answer

lenticels

epidermal cells

somata

micropyle

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Question # 2

C-Shaped cartilaginous rings are present in the wall of.

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Bronchi

Bronchioles

Alveoli

Trachea

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Question # 3

The length of trachia is __________ cm approximately:

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Question # 4

Every year "World Day" is celebrated on:

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31 May

30 May

31 March

21 March

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Question # 5

Point out the FALSE statement about respiration.

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Gases can easily pass through the walls of the alveoli

Gas exchange in lungs is very efficient because lungs provide large surface area

In emphysema, the walls of alveoli break and there is more surface area.

Dust particles can damage the lung by irritating the inner alveoli surface.

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Question # 6

The major cause of lungs cancer is:

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nicotine

smoking

viral infection

radiation

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Question # 7

Which gas us absorbed through stomata of plant during night?

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Carbon dioxide

Oxygen

Nitrigen

Hydrogen

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Question # 8

In first stem of glycolysis glucose molecules breaks ans divide into two _______ molecules

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Citric acid

Lactic acid

Pyruvic acid

Formic acid

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Question # 9

Glottis is a narrow opening at the floor of:

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Nasal cavity

Nostril

Pharynx

Antibiotics

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Question # 10

The primary chemical stimulus for breathing is the concentration of.

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Carbon dioxide in blood.

Oxygen in blood

Carbon oxide in muscles

Oxygen in muscles.

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Question # 11

It is also called sound box:

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trachea

larynx

pharynx

bronchus

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Question # 12

How many carciogens are present in cigarette smoke?

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