Revise Class 10 Science – Life Processes with Our MCQ Mock Test!

How well do you know the essential processes that keep living organisms alive? Test your knowledge with this MCQ-based mock test on Life Processes. Designed as per the Class 10 Science syllabus, it covers all the important topics including nutrition (autotrophic & heterotrophic), respiration (aerobic & anaerobic), transportation in plants and animals, and excretion in living beings.

This test is the perfect way to revise key concepts, practice exam-style questions, and boost your confidence. With carefully framed multiple-choice questions, you can check your preparation level, improve speed and accuracy, and be fully ready for school exams and board exams.

Attempt now and make Life Processes one of your strongest chapters!

1. In the following questions, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:

Assertion: The digested food which is not used by our body immediately is stored in the liver in the form of a carbohydrate starch.

Reason: The stored food can be used as a source of energy by the body as and when required.

 
 
 
 

2. In the following questions, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:

Assertion: All proteins in our food are digested in small intestine only.
Reason: The protein digesting enzymes are released onto small intestine.

 
 
 
 

3. Which of the following are chiefly digested in the stomach?

 
 
 
 

4. In the following questions, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:

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

 
 
 
 

5. Autotrophic organisms include

 
 
 
 

6. Which row in the table below shows the correct products of anaerobic respiration in humans and in yeast?

 

 
 
 
 

7. Observe the experimental setup shown below. Name the chemical indicated as ‘X’ that can absorb the gas which is evolved as a byproduct of respiration.

 
 
 
 

8. Nitrogenous wastes are formed from the breakdown of

 
 
 
 

9. In living organisms during respiration which of the following products are not formed if oxygen is not available?

 
 
 
 

10. Large intestine in man mainly carries out

 
 
 
 

11. A gland not associated with the alimentary canal is

 
 
 
 

12. Observe the following diagram and identify the process and its significance from the following options:

 
 
 
 

13. An incomplete equation for the digestion of starch using saliva is shown as: Saliva + Starch (in test tube) → What will be the likely outcome of this?

 
 
 
 

14. In a closed circulatory system, blood is completely enclosed within

 
 
 
 

15. Normal blood pressure (systolic/diastolic) is

 
 
 
 

16. In the following questions, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:

Assertion: When air is passed through lime water, lime water turns milky.
Reason: Air contains 78% nitrogen and 21% oxygen.

 
 
 
 

17. From the given picture of the digestive system, identify the part labelled as pancreas.

 
 
 
 

18. In the following questions, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:

Assertion: The stomata are present in the leaves and green stems of a plant.

Reason: The gaseous exchange in plants takes place only through the stomata in leaves

 
 
 
 

19. In the following questions, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:

Assertion: Due to the presence of hydrochloric acid, the gastric juice is acidic in nature.

Reason: In acidic medium, the enzyme pepsin begins the digestion of proteins present in food the form smaller molecules in small intestine.

 
 
 
 

20. In the following questions, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:

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

 

 
 
 
 

21. A plant gets rid of excess water through transpiration. Which is a method used by plants to get rid of solid waste products?

 
 
 
 

22. The image shows how Amoeba obtains nutrition.

How this process is advantageous for Amoeba?

 
 
 
 

23. In the following questions, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:

Assertion: Chloroplasts are the organelles in the cells of green plants which contain chlorophyll.

Reason: The site of photosynthesis in cell of the leaf is chlorophyll.

 
 
 
 

24. Which of the following statements is not correct?

 
 
 
 

25. Blood pressure is measured by an instrument called

 
 
 
 

26.

Given below is a diagram of a nephron.

Which row of the following table correctly shows where filtration and selective reabsorption occur?

Filtration Selective reabsorption
(a) P Q
(b) Q S
(c) Q R
(d) P R

 

 
 
 
 

27. The process in which loss of water takes place in the form of water vapour through stomata is called

 
 
 
 

28. The image shows the excretory system in humans.

What is the importance of the labelled part in excretory system?

 
 
 
 

29. In the following questions, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:

Assertion: The process of obtaining food by Amoeba is phagocytosis.

Reason: Amoeba ingests the food particles by forming finger like projections called pseudopodia around it

 
 
 
 

30. In the following questions, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:

Assertion: Human being has a complex respiratory system.
Reason: Human skin is impermeable to gases.

 
 
 
 

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