NCERT Class 10 Science Life Processes Answers

Multiple Choice Questions
1. (c) 2. (b) 3. (a) 4. (d)
5. (b) 6. (b) 7. (b) 8. (d)
9. (d) 10. (d) 11. (b) 12. (d)
13. (d) 14. (d) 15. (d) 16. (b)
17. (c) 18. (a) 19. (b) 20. (d)
21. (d) 22. (d) 23. (a) 24. (a)
25. (c) 26. (c) 27. (c) 28. (c)
29. (c) 30. (b) 31. (c) 32. (c)
33. (d) 34. (c) 35. (a)

Short Answer Questions

36. (a) Photosynthesis

(b) Autotrophs

(c) Chloroplast

(d) Guard Cells

(e) Heterotrophs

(f) Pepsin

37. During day time, as the rate of photosynthesis is more than the rate of respiration, the net result is evolution of oxygen. At night there is no photosynthesis, so they give out carbon dioxide due to respiration.

38. The swelling of guard cells due to absorption of water causes opening of stomatal pores while shrinking of guard cells closes the pores. Opening and closing of stomata occurs due to turgor changes in guard cells. When guard cells are turgid, stomatal pore is open while in flaccid conditions, the stomatal aperture closes.

39. Plant kept in continuous light will live longer, because it will be able to produce oxygen required for its respiration by the process of photosynthesis.

Please refer to attached file for NCERT Class 10 Science Life Processes Answers