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Class 9 Biology MCQS
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Biology – 9th Class
High-Scoring MCQs Bank (350 + Questions)
1. Which branch of Biology focuses on the study of the structure and function of cells?
2. The study of the processes of heredity and variation in living organisms is known as:
3. Heart pumps blood, stomach digests food and kidneys excrete wastes. The statement comes from:
4. Which branch of Biology involves the study of the classification of organisms?
5. Study of internal physical structure of organisms is called:
6. The examination of fossils helps scientists to know the:
7. The microscopic study of tissues:
8. Study of diseases, their causes and effects is called:
9. The study of the transmission of characteristics from parents to offspring is called:
10. Meaning of “logos” is:
11. Coral reef support a wide variety of:
12. The branch deal with the study of form and structure of living organisms is called:
13. In which sura Allah say about creation of man?
14. Which step comes between making hypothesis and doing experiments?
15. Which of the following is not a characteristic of the scientific method?
16. Choose the correct sequence of steps of scientific method:
17. Experiments are very important in scientific method because a researcher…
18. Identifying and defining a problem that scientists wants to investigate through scientific inquiry:
19. Tentative answer of scientific problem is called:
20. For biological research, scientific method is called:
21. Number of steps of biological method are:
22. Sense organs are…in numbers:
23. Logical results of hypothesis are called:
24. The most basic step of biological method is:
25. A good hypothesis must be:
26. The scientific method in which biological problems are solved is termed as:
27. Following are the characteristics of a good hypothesis, EXCEPT:
28. Which of the following is essential skill for biologist?
29. What is supported by extensive evidence and have been repeatedly validated by multiple researches and studies:
30. A scientific law is a uniform:
31. When new hypothesis is again proved by experiments, the original hypothesis becomes a:
32. When new hypotheses are again proved by experiments, the original hypothesis becomes a:
33. The international biodiversity day is:
34. Which of the following help to regulate the climate:
35. Out of total kinds of organisms, how many are the kinds of plants?
36. The branch of biology which deals with classification is:
37. How many types of organisms have biologists named and classified?
38. Which of the following taxonomic ranks represents the broadest rank?
39. Who devised the Linnaean system of taxonomic ranks in 1735:
40. Which rank was added to the taxonomic ranks in 1977:
41. The highest taxonomic rank is:
42. The most specific level of classification:
43. The order of fruit fly is:
44. The human belongs to which family:
45. What is the genus of pea:
46. Who is considered the father of modern taxonomy?
47. Which one is the basic unit of classification?
48. Rank that includes related genera:
49. Which characteristics is unique to organisms in the domain Archaea?
50. Which of these statements is NOT related to bacteria?
51. Which of these organisms belongs to the domain Eukarya?
52. Which organism produce oxygen during photosynthesis:
53. Which of the following cells are larger and contain more complex structures?
54. The cells of which domain containing nucleus and other membrane bound organelles:
55. The parasite Entamoeba hystolytica causes:
56. Protozoans are:
57. Which domain include Prokaryotic organism that are thermophilic and halophilic?
58. Cell wall of Bacteria made up of:
59. Which kingdom includes organisms that are primarily unicellular, eukaryotic, and often heterotrophic?
60. Why are fungi included in heterotrophic organisms?
61. Who classified organisms into two groups i.e. plants and animals:
62. Plant like protists are called:
63. The organisms of which kingdom are eukaryotic, heterotrophic organisms:
64. The organisms of which kingdom are autotrophs:
65. Cell wall of Plants made up of:
66. Antibiotic that derived from Fungi is:
67. Cell of Fungi made up of:
68. Sleeping sickness disease is caused by:
69. Viruses consists of:
70. Viroids are acellular particles composed of:
71. Coronavirus identified in late 2019 in:
72. COVID-19 is a pandemic of:
73. Which of the following includes in the symptoms of COVID-19:
74. Which one is acellular?
75. Viruses are assigned to the kingdoms:
76. The common characteristics of viruses, prions and viroids is:
77. Which character of viruses make their resemblance with living organisms?
78. In the scientific name first part refers to:
79. The system of scientific naming of organisms is called:
80. Who was the founder of the scientific naming system of organisms:
81. The scientific name of tiger is:
82. Scientific name of tomato is:
83. At the time of printing of a scientific name it should be typed in:
84. Binomial nomenclature was introduced by:
85. Scientific name of onion is:
86. The scientific name of human being:
87. What are the two parts of binomial nomenclature?
88. Which one is the basic unit of life:
89. The building blocks of living organisms are:
90. Which of the following organelles have double membrane:
91. Waste material began to accumulate in plants cell due to the absence of:
92. The process of cellular respiration occurs in:
93. The smooth endoplasmic reticulum (SER) is primarily involved in the synthesis of:
94. Ribosomes are composed of:
95. Which cell organelle is involved in packaging and modifying protein?
96. Which cell organelle is responsible for breaking down waste materials?
97. Which of the following cell structures is involved in maintaining cell shape?
98. Which specialized region of the nucleus is responsible for ribosome assembly?
99. What is the main function of the nuclear pores?
100. Which of the following cellular structures is found in animal cells and helps in cell division?
101. Cell was discovered by Robert Hooke in:
102. Nucleus in cell was discovered by:
103. It provides shape, strength, protection and support:
104. Cellulose in cell wall is arranged in a:
105. Fungus cell wall contains:
106. The channels in cell wall that allows exchange of molecules:
107. According to fluid mosaic model lipids make a bilayer in which molecules are submerged:
108. All cells have thin and elastic structure around the cytoplasm:
109. Ribosomes are the sites of:
110. Detoxification of lipids and chemicals is the function of:
111. Flattened sacs in the cytoplasm is called:
112. The liquid part of the cytoplasm without organelles is called:
113. In 1906, Golgi was awarded noble prize for:
114. Secretions of Golgi vesicles and modification of molecules:
115. Cytoplasm is a complex of:
116. The jelly like material inside nuclear envelope is:
117. DNA is also called:
118. The inner membrane of mitochondrion form folds called:
119. Mitochondria is referred as:
120. The pigment found in chloroplasts is:
121. A sac like structure which make granum is called:
122. The site of enzyme synthesis in cell is:
123. Phospholipids for cell membrane formation are synthesized in:
124. The chloroplast functions in:
125. The membranous structure in the chloroplast is:
126. Single membrane bounded organelles with digestive enzymes:
127. Inside the nucleus, granular material is called:
128. Which of following organisms is a prokaryote?
129. Cilia flagella are connected with:
130. Plants cell wall composed of number of layers:
131. Nucleolus is bounded by:
132. Chromatin is composed of:
133. When was Golgi apparatus discovered?
134. Golgi was awarded Nobel prize in:
135. In a multicellular plant, which cell type produces glucose?
136. Primary pigment responsible for capturing sunlight:
137. Stem cells present in bone marrow differentiate into:
138. In which phase of cell cycle, maximum growth occurs?
139. In which phase of cell cycle, chromosomes duplicate?
140. Which phase of cell cycle is also called growth phase?
141. Total no of chromosomes during S phase:
142. In G0 phase the stoppage in division may be:
143. Interphase lasts for about of the total time:
144. At which stage of mitosis do chromosomes line up in the center?
145. Nuclear membrane reforming around two sets of chromosomes:
146. How does the centrosome contribute to mitosis?
147. Centrosomes make mitotic spindle in:
148. Mitosis occurs in which cells of eukaryotes:
149. Who discovered the events of mitosis:
150. Which of the following is false about prophase:
151. Unfolding of chromosomes (to chromatin) occurs in:
152. Hydra reproduces asexually by means of:
153. Chromosome number in a zygote relative to parent:
154. During cell division spindle fibers attach to:
155. What is the primary purpose of mitosis?
156. Our body consist of about cells:
157. Which event is unique to meiosis but not mitosis?
158. Why is meiosis-II necessary after meiosis-I?
159. Meiosis was discovered in 1876 by:
160. X-shaped structure formed during meiosis:
161. The number of chromosomes is maintained by:
162. Genetically different zygote is formed as a result of:
163. The longest phase of meiosis is:
164. The primary purpose of meiosis is:
165. Meiosis was discovered in:
166. Crossing over take place in:
167. Gametes are produce by:
168. What is the smallest unit of matter?
169. What is the subcellular level called?
170. What is a group of similar cells called?
171. What is an example of an organ in animals?
172. What is the primary function of the ribosomes?
173. The most complex level of organization is:
174. The smallest unit with characteristics of life is:
175. The tissue which covers body surface and lines cavities:
176. “The whole is greater than the sum of its parts” said by:
177. Interaction of various organ system brings:
178. Which structure is at a different level from others?
179. Biological organization means:
180. In a leaf, which tissue is responsible for photosynthesis?
181. Primary function of the xylem tissue in a leaf:
182. Responsible for the transport of food in plant body:
183. Primary function of the flower in a plant:
184. What is the primary function of roots in plants?
185. What is the primary site of photosynthesis in plants?
186. What is the function of the phloem in leaves?
187. Which part plays a crucial role in plant’s sexual reproduction:
188. Stomata are tiny pores that regulates:
189. The tissue contain cells rich in chloroplasts are:
190. Root system involves in:
191. Which structure is not an organ?
192. Which tissue transport water in plants?
193. Epithelial tissue in stomach wall produces:
194. Which organ pumps blood throughout the body:
195. Which organ is the control center of the body?
196. Which organ breaks down food using enzymes?
197. Which of the following is NOT a function of the liver?
198. Kidneys filter waste products from:
199. Epithelial tissue secretes:
200. What is the main function of the nervous system?
201. What is the normal body temperature?
202. What hormone regulates blood sugar levels?
203. Role of the endocrine system in homeostasis?
204. During hard exercise, the rate of respiration:
205. Biomolecule carrying genetic information?
206. What is the main function of carbohydrates?
207. Percentage of lipids in dry mass of protoplasm?
208. Where is DNA located in eukaryotic cells?
209. Complex molecules formed from smaller ones:
210. Difference between mono and polysaccharides?
211. What is true about cellulose?
212. What does “carbohydrate” mean?
213. General formula for carbohydrates?
214. Polysaccharide found in cell walls of plants?
215. Monosaccharide which is essential part of DNA?
216. Most abundant carbohydrate is:
217. Meaning of saccharides is:
218. Protein involved in oxygen transport?
219. Component of amino acid determining properties?
220. Proteins involved in defence against pathogens?
221. Which of the following is NOT a function of proteins?
222. What is the building block of proteins?
223. What is the main component of cell membranes?
224. Which amino acid has the simplest R group?
225. Total number of amino acids in the body?
226. Which of the following are the units of most lipids?
227. What are lipids composed of?
228. What is the function of lipids in the body?
229. What is the main source of lipids in plants?
230. Energy obtained from one gram of fat?
231. Lipids are insoluble in:
232. Which components make up a nucleotide?
233. Base found in RNA but not in DNA?
234. What are nucleic acids composed of?
235. Sugar present in DNA?
236. What is the function of DNA?
237. What is the function of ribosomes?
238. RNA transfers specific amino acids to ribosomes?
239. Statement regarding genes which is FALSE?
240. This is a heredity material:
241. Carries genetic info from DNA to ribosomes?
242. Watson and Cricks proposed DNA model in?
243. When did Watson and Crick get the Nobel Prize?
244. Process of copying DNA sequence into mRNA?
245. Process of forming proteins from mRNA sequence?
246. Where does protein synthesis occur in a cell?
247. Biochemical reactions to maintain life?
248. Reactions in which larger molecules are synthesized?
249. Which best defines an enzyme?
250. Prosthetic groups are:
251. Where do intracellular enzymes operate?
252. Which is true about enzyme?
253. What is true about cofactors?
254. Region on enzyme recognizing substrate:
255. Enzymes convert the substrate into:
256. True according to induced fit model?
257. Model proposed by Emil Fischer in 1894?
258. Model proposed by Daniel Koshland in 1958?
259. Emil Fischer proposed the model in:
260. Enzymes are sensitive to which factor?
261. Where does trypsin function in the body?
262. Change in pH can alter active site by:
263. Pepsin enzyme works in:
264. Pepsin produced in:
265. How does competitive inhibitor affect enzyme?
266. Bind to enzymes and decrease activity:
267. Inhibitors resemble the enzyme’s substrate?
268. Inhibitor that binds to the active site?
269. These are antibiotics:
270. From ATP, which bonds are broken for energy?
271. The major energy currency of all cells is:
272. Study of energy transformations in living things:
273. Ribose is:
274. Which sugar is included in ATP?
275. The number of ATP sub-units is:
276. Nitrogenous base in ATP molecule:
277. Calories released per mole when P-bond breaks?
278. Acquisition of electrons is called:
279. Light reactions of photosynthesis occur in:
280. Wavelengths absorbed to maximum by chlorophyll?
281. Where do dark reactions occur?
282. Molecule donating electrons in light reactions?
283. Mechanism of ATP synthesis is:
284. Identify raw materials of photosynthesis:
285. Dark reactions were discovered by:
286. Substances that absorb visible light:
287. Percentage of light absorbed by plant leaf?
288. When yeast ferments glucose, products are:
289. Aerobic process producing most ATP?
290. Common byproduct of anaerobic respiration in animals?
291. Glycolysis is the breakdown of:
292. In aerobic respiration pyruvic acid changes to:
293. Alcoholic fermentation occurs in:
294. Tired because skeletal muscles accumulate:
295. Where does the Krebs cycle occur?
296. Main purpose of fermentation?
297. Soy sauce is made by:
298. Breakdown of glucose in first step of respiration:
299. Plant nutrient required in large amount?
300. Element required for chlorophyll formation?
301. Process where plants get their food:
302. Which is an example of macro nutrients:
303. Macro nutrient regulating stomata:
304. Which element is a micronutrient for plants?
305. Primary function of root hairs is:
306. Water moves from soil to root cells by:
307. Responsible for the transport of food:
308. Xylem and Phloem collectively called:
309. Zone of cells inside root epidermis:
310. Transpiration is regulated by:
311. Ion playing role in opening of Stomata?
312. Loss of water in form of vapours:
313. Roles of stomata in plants:
314. When Stomata remain open?
315. Stomata are present:
316. Uptake of water/minerals takes place through:
317. Continuous water column created in xylem due to:
318. Most plants transport food in form of:
319. True according to pressure flow mechanism?
320. Two-way passage of food:
321. Pressure flow mechanism is about:
322. Xylem transport of water and salts is:
323. Mechanism explaining transport of food:
324. During daytime, all plant cells are carrying out:
325. During daytime, green parts of plants are carrying out:
326. Take in oxygen, release carbon dioxide:
327. Wood stem surface cover with:
328. How many types of transpiration?
329. Rubber plants excrete:
330. Waste product of plant at night?
331. Succulent organs are present in:
332. Which is an example of Hydrophytes:
333. Which is NOT an example of Mesophytes:
334. Submerged in fresh water:
335. Example of Xerophytes is:
336. Reproduced by binary fission:
337. Primary method of reproduction in yeast?
338. Spore formation in fungi:
339. Propagation through runners:
340. Propagates through tubers?
341. Aboveground horizontal stem (leaves/roots at nodes):
342. Does NOT help vegetative propagation?
343. Essential for continuation of species:
344. Amoeba reproduces asexually by:
345. Method where buds are formed:
346. Sugarcane reproduces using:
347. Spores are produced in:
348. Horizontal underground stem:
349. Rhizopus reproduces asexually by:
350. Formed inside bacterial cells:
351. Structure of Rhizopus in reproduction:
352. Artificial vegetative propagation:
353. Used to increase crop production:
354. Almond, Plum and cherries:
355. Responsible for producing pollen:
356. Forms female gametophyte:
357. Male gametophyte is:
358. Which structure is triploid (3n)?
359. Embryo sac is formed inside:
360. Double fertilization involves:
361. Which generation producing spores:
362. Unit of corolla:
363. Female reproductive organ:
364. Transfer of pollen:
365. Zygote develops into:
366. Zygote in flowering plants develops into:
367. Which flower structure Produce pollen?
368. Second whorl of flower:
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Important MCQs of Class 9
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