Biology MCQs (211–240) with Answers and Reasons are prepared for NEET, CUET, and Board examinations.
This MCQ set focuses on Genetics, Human Physiology, Plant Physiology, Microbiology, and Ecology.
Regular practice helps strengthen NCERT concepts and improves exam accuracy.
211. Who is known as the father of genetics?
Correct Answer: B
Reason: Gregor Mendel proposed the laws of inheritance.
212. Which structure carries genetic information?
Correct Answer: D
Reason: DNA stores and transmits genetic information.
213. Which hormone controls metabolism?
Correct Answer: A
Reason: Thyroxine regulates body metabolism.
214. Which blood vessel carries deoxygenated blood from heart to lungs?
Correct Answer: B
Reason: Pulmonary artery carries deoxygenated blood to lungs.
215. Which plant hormone promotes fruit ripening?
Correct Answer: C
Reason: Ethylene is responsible for fruit ripening.
216. Which vitamin deficiency causes scurvy?
Correct Answer: B
Reason: Vitamin C deficiency leads to scurvy.
217. Which organ is responsible for hearing?
Correct Answer: D
Reason: Ear detects sound waves.
218. Which microorganism converts milk into curd?
Correct Answer: A
Reason: Lactobacillus ferments milk into curd.
219. Which structure connects bones to bones?
Correct Answer: B
Reason: Ligaments connect bones to bones.
220. Which gas is released during respiration?
Correct Answer: B
Reason: Carbon dioxide is produced during respiration.
221. Which part of the plant conducts water?
Correct Answer: A
Reason: Xylem transports water and minerals.
222. Which disease is caused by virus?
Correct Answer: C
Reason: AIDS is caused by HIV virus.
223. Which organ filters blood in humans?
Correct Answer: D
Reason: Kidneys filter waste from blood.
224. Which part of the flower produces pollen?
Correct Answer: A
Reason: Anther produces pollen grains.
225. Which gas is essential for photosynthesis?
Correct Answer: B
Reason: Carbon dioxide is required to synthesize glucose.
226. Which organ controls all activities of the body?
Correct Answer: C
Reason: Brain controls and coordinates body functions.
227. Which plant tissue transports food?
Correct Answer: B
Reason: Phloem transports prepared food.
228. Which vitamin is produced in the skin by sunlight?
Correct Answer: D
Reason: Vitamin D is synthesized in skin under sunlight.
229. Which part of the brain controls involuntary actions?
Correct Answer: B
Reason: Medulla controls involuntary activities.
230. Which organism causes malaria?
Correct Answer: C
Reason: Malaria is caused by Plasmodium parasite.
231. Which cell organelle is called suicidal bag?
Correct Answer: D
Reason: Lysosomes contain digestive enzymes.
232. Which structure helps in respiration in fish?
Correct Answer: A
Reason: Gills extract oxygen from water.
233. Which plant hormone inhibits growth?
Correct Answer: D
Reason: Abscisic acid acts as a growth inhibitor.
234. Which level of organization includes ecosystem?
Correct Answer: C
Reason: Ecosystem belongs to ecological level.
235. Which enzyme digests fats?
Correct Answer: B
Reason: Lipase breaks down fats.
236. Which part of the human eye controls the amount of light entering?
Correct Answer: D
Reason: Iris regulates pupil size.
237. Which blood group is universal recipient?
Correct Answer: C
Reason: Blood group AB can receive blood from all groups.
238. Which organelle modifies and packages proteins?
Correct Answer: B
Reason: Golgi apparatus modifies and packages proteins.
239. Which gas is used in respiration?
Correct Answer: A
Reason: Oxygen is essential for cellular respiration.
240. Which part of the flower receives pollen?
Correct Answer: C
Reason: Stigma receives pollen grains.
Biology MCQs (211–240) FAQs
1. Are these MCQs useful for NEET?
Yes, all questions are NCERT-based and NEET oriented.
2. Do all MCQs include reasons?
Yes, each question includes a clear reason.
3. Which topics are mainly covered?
Genetics, physiology, microbiology, and ecology.
4. Can board students use these MCQs?
Yes, these MCQs are useful for board exams as well.
5. Will the next part follow the same pattern?
Yes, all upcoming Biology MCQ parts will follow this format.
Yes, all questions are NCERT-based and NEET oriented.
2. Do all MCQs include reasons?
Yes, each question includes a clear reason.
3. Which topics are mainly covered?
Genetics, physiology, microbiology, and ecology.
4. Can board students use these MCQs?
Yes, these MCQs are useful for board exams as well.
5. Will the next part follow the same pattern?
Yes, all upcoming Biology MCQ parts will follow this format.
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