Life Processes Class 10 MCQ with Answers

Welcome to biology life processes class 10 MCQ online test. In this online test, you would find the single choice type questions along with assertion reason type questions. This test is strictly according to the class 10 science syllabus as proposed by CBSE and NCERT books.

Take this online quiz to test your knowledge and your exam preparation.

Life Processes Class 10 MCQ Online Test

General Instructions

Your test contains multiple-choice questions with only one answer-type question. There are a total of 20 questions
This is a 20 min test. Please make sure you complete it in the stipulated time
You can finish this test any time using the 'Submit' button.

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1. Where is the dirty blood in our body filtered?

Heart

Lungs

Ureter

Kidneys

2. Assertion: Veins have thin walls to collect blood from different organs.
Reason: Blood in veins are not under pressure.

Both Assertion and Reason are true and Reason is the correct explanation of Assertion

Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

Assertion is true but Reason is false

Assertion is false but Reason is true

Both Assertion and Reason are false

3. Which is the first enzyme to mix with food i the digestive tract?

Pepsin

Cellulose

Amylase

Trypsin

4. A biochemical compound that readily combines with oxygen and distributes it throughout the human body is

water

urea

hemoglobin

acetylcholine

5. Opening and closing of pores is a function performed by

Stomata

Chlorophyll

Chloroplast

Guard cells

6. The procedure used for cleaning the blood of a person by separating urea from it is called:

osmosis

filtration

dialysis

double circulation

7. In which mode of nutrition an organism derives its food from the body of another living organism without killing it?

Saprotrophic nutrition

Parasitic nutrition

Holozoic nutrition

Autotrophic nutrition

8. What are the products obtained by anaerobic respiration in plants?

Lactic acid + Energy

Carbon dioxide + Water + Energy

Ethanol + Carbon dioxide + Energy

Pyruvate

9. Proteins after digestion are converted into

Carbohydrates

Small globules

Amino acids

starch

10. The blood leaving the tissues becomes rich in

Hemoglobin

carbon dioxide

water

oxygen

11. Which of these is the simplest form of food ?

rice

wheat

Butter

Glucose

12. The part of the digestive system where no digestion takes place is

ileum

stomach

mouth

oesophagus

13. The autotrophic mode of nutrition requires

carbon dioxide and water

chlorophyll

sunlight

all of these

14. ASSERTION: Arteries are thick-walled and elastic in nature.
REASON: Arteries have to transport blood away from the heart.

If both assertion and reason are CORRECT and the reason is the CORRECT explanation of the assertion.

If both assertion and reason are CORRECT, but the reason is NOT THE CORRECT explanation of the assertion.

If the assertion is CORRECT, but the reason is INCORRECT

If the assertion is INCORRECT, but the reason is CORRECT

If both assertion and reason are INCORRECT

15. The back flow of blood during the pumping of blood by heart is prevented by:

Walls of ventricles

Walls of atrium

Valves in heart

Walls between atria and ventricles

16. ASSERTION: The opening and closing of the pore is a function of the guard cells.
REASON: Stomatal pores are the site for exchange of gases by diffusion.

If both assertion and reason are CORRECT and the reason is the CORRECT explanation of the assertion.

If both assertion and reason are CORRECT, but the reason is NOT THE CORRECT explanation of the assertion.

If the assertion is CORRECT, but the reason is INCORRECT

If the assertion is INCORRECT, but the reason is CORRECT

If both assertion and reason are INCORRECT

17. Trachea do not collapse when there is not much air because they are:

thick and muscular

having cartilaginous rings

have valves

supported by larynx

18. The site of photosynthesis in the cells of a leaf is

chloroplast

mitochondria

cytoplasm

protoplasm

19. Large intestine in man mainly carries out

absorption

assimilation

digestion of fats

digestion of carbohydrates

20. Assertion: Human heart does not allow mixing of oxygen reach blood with carbon dioxide reach blood.
Reason: Human heart has different chambers.

Both Assertion and Reason are true and Reason is the correct explanation of Assertion

Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

Assertion is true but Reason is false

Assertion is false but Reason is true

Both Assertion and Reason are false

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