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. ASSERTION: Saliva contains pepsin enzyme.
REASON: Pepsin digests lipids.

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

2. 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

3. A large quantity of one of the following is removed from our body by lungs:

CO₂ and H₂O

CO₂ only

FLO only

ammonia

4. 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

5. Large intestine in man mainly carries out

absorption

assimilation

digestion of fats

digestion of carbohydrates

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

ileum

stomach

mouth

oesophagus

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

water

urea

hemoglobin

acetylcholine

8. A blood vessel that pumps the blood from the heart to the entire body:

artery

capillary

Vein

Haemoglobin

9. ASSERTION: Diffusion does not meet high energy requirements of multi-cellular organisms.
REASON: Diffusion is a fast process but only occurs at the surface of the body.

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

10. The filtration units of kidneys are called

Ureter

Urethra

nephrons

Neurons

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

thick and muscular

having cartilaginous rings

have valves

supported by larynx

12. Which is the correct sequence of body parts in the human alimentary canal?

Mouth → stomach → small intestine → large intestine → oesophagus

Mouth → oesophagus → stomach → small intestine → large intestine

Mouth → stomach → oesophagus → smallintestine → large intestine

Mouth → oesophagus → stomach → large intestine → small intestine

13. ASSERTION: Molecular movements are needed for life.
REASON: Body structures made up of these molecules need continuous repair and maintenance.

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

14. Autotrophic organisms include

bacteria and virus

bacteria and fungi

green plants and some bacteria

green plants and all bacteria

15. A gland not associated with the alimentary canal is

liver

salivary glands

pancreas

adrenal

16. The movement of food in phloem is called:

transpiration

translocation

respiration

evaporation

17. ASSERTION: Rings of cartilage are present in the throat.
REASON: These ensure that the air-passage does not collapse.

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

18. Roots of the plants absorb water from the soil through the process of

diffusion

transpiration

osmosis

None of these

19. Name the tube which connects the kidneys to the urinary bladder

Urethra

Nephron

Tubule

Ureter

20. ASSERTION: The purpose of making urine is to filter out undigested food from intestine.
REASON: Kidneys filter the waste and produce urine.

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

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