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CBSE Class 10 Science MCQs Chapter 6 Life Processes

CBSE Class 10 Science MCQs Chapter 6 Life Processes help students tackle the multiple-choice questions asked in the board exam. The Life Processes Class 10 MCQs provided here cover the different concepts of Chapter 6, Life Processes – transport and excretion in various organisms. In addition to MCQs on Life Processes Class 10, this chapter gives students detailed information on how these life processes are interconnected and their needs in an organism. So, students need to have a strong conceptual understanding of the chapter; only then could they be able to answer the Class 10 Science Chapter 6 MCQs. Just mugging up the topics will not help them solve the MCQs of the Life Process in the CBSE Class 10 exam. So, students are advised to go through the chapter thoroughly before answering these Life Processes MCQs Class 10.

By practising these Life Processes MCQs, students get well-versed with the new type of questions that can be asked in exams. Also, these Life Process MCQs will help students understand the new question paper format. They can download the CBSE Class 10 Science MCQs Chapter 6 Life Processes PDF in the link below so that they can refer to them anytime while studying. These Class 10 Life Processes MCQs will boost the confidence level of students. So, practising Class 10 Life Process MCQs help them score high marks in the board exam. Students can also access the CBSE Class 10 Science MCQs for other chapters for their exam preparation.

Certainly! Here are 50 MCQs based on the chapter "Life Processes" from the 10th CBSE board syllabus, along with the answers provided at the end:


50 MCQs on Life Processes:


1. Respiration is the process of:

a) Releasing energy from food

b) Taking in carbon dioxide

c) Exhaling oxygen

d) Synthesizing glucose


2. The process by which green plants make their food is called:

a) Respiration

b) Digestion

c) Photosynthesis

d) Transpiration


3. In which part of the plant does photosynthesis primarily occur?

a) Roots

b) Leaves

c) Stem

d) Flowers


4. What is the primary role of the stomata in leaves?

a) Absorbing water and minerals

b) Transporting nutrients

c) Regulating water loss and gas exchange

d) Providing structural support


5. Which of the following is not a raw material for photosynthesis?

a) Carbon dioxide

b) Sunlight

c) Water

d) Oxygen


6. The breakdown of glucose in the absence of oxygen is called:

a) Fermentation

b) Photosynthesis

c) Respiration

d) Transpiration


7. Which of the following organisms carries out the process of photosynthesis?

a) Humans

b) Animals

c) Fungi

d) Green plants


8. What is the waste product of respiration in humans?

a) Carbon dioxide

b) Oxygen

c) Water

d) Glucose


9. Which of the following is a respiratory organ in humans?

a) Liver

b) Lungs

c) Kidney

d) Brain



10. Which of the following is an autotrophic mode of nutrition?

a) Ingestion

b) Photosynthesis

c) Absorption

d) Parasitism


11. The exchange of gases in the leaves of a plant occurs through:

a) Stomata

b) Lenticels

c) Root hairs

d) Guard cells


12. The process by which water and minerals are absorbed by the roots of a plant is called:

a) Photosynthesis

b) Transpiration

c) Respiration

d) Osmosis


13. Which of the following substances is transported by the phloem in plants?

a) Water and minerals

b) Oxygen and carbon dioxide

c) Sugars and other organic compounds

d) Amino acids and proteins


14. What is the primary pigment involved in capturing light energy for photosynthesis?

a) Chlorophyll

b) Carotene

c) Xanthophyll

d) Melanin


15. The breakdown of food substances into simpler forms that can be absorbed and used by cells is called:

a) Respiration

b) Digestion

c) Circulation

d) Transpiration


16. The process of intake of food and water by an organism is called:

a) Nutrition

b) Transport

c) Excretion

d) Reproduction


17. Which of the following is not a mode of nutrition in organisms?

a) Autotrophic nutrition

b) Heterotrophic nutrition

c) Parasitic nutrition

d) Cytotrophic nutrition


18. Which of the following is not a function of the human circulatory system?

a) Transporting oxygen and nutrients

b) Removing waste products

c) Controlling body temperature

d) Maintaining body posture


19. The process by which plants lose water in the form of water vapor through their leaves is called:

a) Transpiration

b) Respiration

c) Photosynthesis

d) Evaporation


20. The energy released during respiration is stored in the form of:

a) ATP (Adenosine Triphosphate)

b) Glucose

c) Oxygen

d) Carbon dioxide


21. Which of the following is a vestigial organ in humans?

a) Liver

b) Gallbladder

c) Spleen

d) Lungs


22. The process by which living organisms take in oxygen and release carbon dioxide is called:

a) Respiration

b) Digestion

c) Photosynthesis

d) Excretion


23. The waste product of photosynthesis is:

a) Glucose

b) Oxygen

c) Carbon dioxide

d) Water


24. In which part of the digestive system are most of the nutrients absorbed into the bloodstream?

a) Stomach

b) Large intestine

c) Small intestine

d) Esophagus



25. The process of breakdown of complex food substances into simpler forms in the alimentary canal is called:

a) Respiration

b) Transpiration

c) Absorption

d) Digestion


26. The process of the breakdown of glucose into energy and carbon dioxide is known as:

a) Respiration

b) Fermentation

c) Digestion

d) Photosynthesis


27. Which of the following is an example of a parasitic mode of nutrition?

a) Herbivory

b) Carnivory

c) Symbiosis

d) Tapeworm feeding on its host


28. The excretory unit of the human kidney is called:

a) Nephron

b) Alveolus

c) Neuron

d) Bronchus


29. The human respiratory system carries out:

a) Photosynthesis

b) Respiration

c) Digestion

d) Transpiration


30. What is the primary role of the alveoli in the respiratory system?

a) Transporting oxygen

b) Exchanging gases between blood and air

c) Filtration of impurities

d) Producing mucus


31. Which of the following is a waste product of the human circulatory system?

a) Glucose

b) Oxygen

c) Carbon dioxide

d) Water


32. Which of the following is a heterotrophic mode of nutrition?

a) Photosynthesis

b) Autotrophy

c) Parasitism

d) Absorption


33. The process by which excess water and waste products are eliminated from the body is called:

a) Transpiration

b) Respiration

c) Excretion

d) Digestion


34. The part of the digestive system responsible for grinding and breaking down food with the help of teeth is the:

a) Stomach

b) Esophagus

c) Small intestine

d) Mouth


35. The movement of food through the alimentary canal by sequential waves of muscle contraction is called:

a) Peristalsis

b) Digestion

c) Absorption

d) Fermentation


36. Which of the following is a plant hormone responsible for the bending of plant parts toward light?

a) Cytokinin

b) Gibberellin

c) Ethylene

d) Auxin


37. The part of the plant responsible for transpiration and gaseous exchange is the:

a) Root hairs

b) Xylem

c) Phloem

d) Stomata


38. The process by which plants make food using sunlight, carbon dioxide, and water is called:

a) Respiration

b) Digestion

c) Photosynthesis

d) Circulation


39. The enzyme responsible for breaking down starch into maltose during digestion is:

a) Pepsin

b) Trypsin



c) Amylase

d) Lipase


40. The fluid present in the cell that contains various organelles is called:

a) Cytoplasm

b) Nucleus

c) Cell membrane

d) Mitochondria


41. The process by which excess water and waste products are removed from the body in the form of urine is called:

a) Transpiration

b) Excretion

c) Digestion

d) Respiration


42. The part of the plant responsible for the transport of water and minerals from the roots to other parts of the plant is the:

a) Leaves

b) Flowers

c) Stems

d) Xylem


43. The breakdown of food substances into simpler forms in the presence of oxygen is called:

a) Respiration

b) Fermentation

c) Transpiration

d) Photosynthesis



44. The process by which water and nutrients are carried from the roots to the leaves of a plant is called:

a) Transpiration

b) Photosynthesis

c) Respiration

d) Digestion


45. The process of the intake of food and its utilization by the body for energy, growth, and repair is known as:

a) Digestion

b) Absorption

c) Nutrition

d) Assimilation


46. Which of the following is not a component of the human circulatory system?

a) Heart

b) Blood vessels

c) Lungs

d) Blood


47. The process by which nutrients are taken up by cells and utilized for various metabolic activities is called:

a) Digestion

b) Assimilation

c) Excretion

d) Respiration


48. The hormone responsible for the growth of the plant stem and controlling apical dominance is:

a) Auxin

b) Gibberellin

c) Cytokinin

d) Abscisic acid


49. The process of gaseous exchange in the human body occurs in the:

a) Alveoli of the lungs

b) Stomach

c) Kidneys

d) Liver


50. The part of the digestive system where most of the absorption of digested food occurs is the:

a) Esophagus

b) Stomach

c) Small intestine

d) Large intestine


Answers:

1. a) Releasing energy from food

2. c) Photosynthesis

3. b) Leaves

4. c) Regulating water loss and gas exchange

5. d) Oxygen

6. a) Fermentation

7. d) Green plants

8. a) Carbon dioxide

9. b) Lungs

10. b) Photosynthesis

11. a) Stomata

12. c) Respiration

13. c) Sugars and other organic compounds

14. a) Chlorophyll

15. b) Digestion

16. a) Nutrition

17. d) Cytotrophic nutrition

18. d) Maintaining body posture

19. a) Transpiration

20. a) ATP (Adenosine Triphosphate)

21. b) Gallbladder

22. a) Respiration

23. c) Carbon dioxide

24. c) Small intestine

25. d) Digestion

26. a) Respiration

27. d) Tapeworm feeding on its host

28. a) Nephron

29. b) Respiration

30. b) Exchanging gases between blood and air

31. c) Carbon dioxide

32. c) Parasitism

33. c) Excretion

34. d) Mouth

35. a) Peristalsis

36. d) Auxin

37. d) Stomata

38. c) Photosynthesis

39. c) Amylase

40. a) Cytoplasm



41. b) Excretion

42. d) Xylem

43. a) Respiration

44. a) Transpiration

45. c) Nutrition

46. c) Lungs

47. b) Assimilation

48. a) Auxin

49. a) Alveoli of the lungs

50. c) Small intestine


I hope you find these questions helpful for your preparation. Good luck with your studies!

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