Biology MCQs (31–60) with Answers and Reasons continue the practice set to revise important topics like Biomolecules, Human Physiology, Plant Anatomy, and Genetics basics.
This MCQ set is helpful for NEET Biology revision and also supports quick practice for school exams and other objective-based tests.
Regular MCQ practice improves concept retention, reduces silly mistakes, and strengthens frequently asked Biology fundamentals.
Regular MCQ practice improves concept retention, reduces silly mistakes, and strengthens frequently asked Biology fundamentals.
31. The site of aerobic respiration in a cell is:
Correct Answer: C
Reason: Mitochondria are the main site of aerobic respiration and ATP production.
32. The plant hormone responsible for cell elongation is:
Correct Answer: A
Reason: Auxin promotes cell elongation and helps in plant growth responses.
33. The largest gland in the human body is:
Correct Answer: B
Reason: Liver is the largest gland and performs many metabolic functions.
34. The “suicide bags” of the cell are:
Correct Answer: D
Reason: Lysosomes contain digestive enzymes and can digest damaged cell parts.
35. The blood vessels that carry blood away from the heart are:
Correct Answer: A
Reason: Arteries carry blood from heart to different body organs.
36. The pigment responsible for oxygen transport in blood is present in:
Correct Answer: C
Reason: Hemoglobin is present in RBCs and carries oxygen.
37. The basic building blocks of proteins are:
Correct Answer: B
Reason: Proteins are polymers made up of amino acids.
38. The structure responsible for exchange of gases in lungs is:
Correct Answer: D
Reason: Alveoli have large surface area and thin walls for gas exchange.
39. Which organ produces insulin?
Correct Answer: A
Reason: Insulin is secreted by beta cells of pancreas to regulate blood glucose.
40. The female reproductive cell is called:
Correct Answer: B
Reason: Ovum is the female gamete produced in ovaries.
41. The male reproductive cell is called:
Correct Answer: A
Reason: Sperm is the male gamete produced in testes.
42. The process of formation of gametes is called:
Correct Answer: C
Reason: Meiosis reduces chromosome number and forms haploid gametes.
43. The structural unit of DNA is:
Correct Answer: B
Reason: DNA is made up of repeating units called nucleotides.
44. The plant tissue responsible for growth in length is:
Correct Answer: A
Reason: Apical meristem increases the length of roots and shoots.
45. Which blood cells help in clotting?
Correct Answer: D
Reason: Platelets form blood clots and help stop bleeding.
46. The control center of a cell is:
Correct Answer: B
Reason: Nucleus controls cell activities and stores genetic information.
47. The transport of water through xylem is mainly due to:
Correct Answer: A
Reason: Evaporation from leaves creates suction that pulls water upward.
48. The organ that produces bile is:
Correct Answer: B
Reason: Liver produces bile which helps in digestion of fats.
49. The enzyme that digests starch in saliva is:
Correct Answer: D
Reason: Salivary amylase breaks down starch into simpler sugars.
50. The blood vessels that carry blood towards the heart are:
Correct Answer: B
Reason: Veins carry blood back to the heart and often have valves.
51. Which part of the eye controls the amount of light entering?
Correct Answer: C
Reason: Iris controls pupil size and regulates light entry.
52. The part of brain that controls balance is:
Correct Answer: B
Reason: Cerebellum coordinates body movements and maintains balance.
53. The structural unit of a muscle is:
Correct Answer: D
Reason: Muscles are made up of muscle fibres that contract to produce movement.
54. The process of removal of wastes from body is:
Correct Answer: A
Reason: Excretion removes metabolic wastes like urea and salts from the body.
55. The water loss from leaves through stomata is:
Correct Answer: B
Reason: Transpiration is water vapour loss mainly through stomata in leaves.
56. The smallest unit of an ecosystem is:
Correct Answer: C
Reason: An organism is the basic living unit; populations and communities are groups of organisms.
57. The process by which plants make food is:
Correct Answer: A
Reason: Photosynthesis produces glucose using sunlight, CO2 and water.
58. The main nitrogenous waste in humans is:
Correct Answer: B
Reason: Humans excrete urea as the main nitrogenous waste via kidneys.
59. The blood group known as universal recipient is:
Correct Answer: C
Reason: AB group can receive blood from all ABO groups with matching Rh factor.
60. The blood group known as universal donor is:
Correct Answer: D
Reason: Blood group O (especially O negative) can donate to all ABO groups.
Biology MCQs (31–60) FAQs
1. Which topics are included in Biology MCQs (31–60)?
This set includes cell organelles, plant hormones, human organs, enzymes, blood circulation, and basic ecology terms.
2. Are these Biology MCQs enough for NEET preparation?
These MCQs are useful for quick revision, but students should also practice chapter-wise NEET level questions daily.
3. Do these MCQs include correct answers with reasons?
Yes, each MCQ shows the correct answer and a short “Reason” for easy understanding.
4. What is the best way to use these MCQs for revision?
Attempt each question, check the reason, and revise the related NCERT concept immediately.
5. Which Biology topics should be revised after this part?
Revise human digestion, respiration, circulation, plant transport, and basic biomolecules for better accuracy.
This set includes cell organelles, plant hormones, human organs, enzymes, blood circulation, and basic ecology terms.
2. Are these Biology MCQs enough for NEET preparation?
These MCQs are useful for quick revision, but students should also practice chapter-wise NEET level questions daily.
3. Do these MCQs include correct answers with reasons?
Yes, each MCQ shows the correct answer and a short “Reason” for easy understanding.
4. What is the best way to use these MCQs for revision?
Attempt each question, check the reason, and revise the related NCERT concept immediately.
5. Which Biology topics should be revised after this part?
Revise human digestion, respiration, circulation, plant transport, and basic biomolecules for better accuracy.
.png)
Post a Comment