MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 274 Mcqs, each offering curated multiple-choice questions to sharpen your UPSC IAS Exam knowledge and support exam preparation. Choose a topic below to get started.
| 201. |
The chromosome number in humans is |
| A. | 94 |
| B. | 23 |
| C. | 46 |
| D. | 22 |
| Answer» D. 22 | |
| 202. |
Human cheek cells are commonly stained with |
| A. | methylene blue |
| B. | safranin |
| C. | acetocarmine |
| D. | eosine |
| Answer» B. safranin | |
| 203. |
Silver nitrate solution is used to study |
| A. | endoplasmic reticulum |
| B. | Golgi apparatus |
| C. | nucleus |
| D. | mitochondria |
| Answer» C. nucleus | |
| 204. |
Crossing over occurs during |
| A. | leptotene |
| B. | pachytene |
| C. | diplotene |
| D. | diakinesis |
| Answer» C. diplotene | |
| 205. |
70S type of ribosomes is found in |
| A. | Prokaryotic cells |
| B. | Prokaryotic cells, chloroplasts and mitochondria |
| C. | Mitochondria |
| D. | Nucleus, mitochondria |
| Answer» C. Mitochondria | |
| 206. |
Mitochondria supply most of the necessary biological energy by |
| A. | Breaking down of sugar |
| B. | Oxidizing substrates of TCA cycle |
| C. | Reducing NADP |
| D. | Breaking down of protein |
| Answer» C. Reducing NADP | |
| 207. |
Which of the following is a part of endomembrane system of eukaryotic cell? |
| A. | Peroxisomes |
| B. | Chloroplasts |
| C. | Mitochondria |
| D. | Golgi complexes |
| Answer» E. | |
| 208. |
Chiasmata are first seen in |
| A. | leptotene |
| B. | zygotene |
| C. | pachytene |
| D. | diplotene |
| Answer» E. | |
| 209. |
Terminalization occurs during |
| A. | mitosis |
| B. | diakinesis |
| C. | meiosis II |
| D. | cytokinesis |
| Answer» C. meiosis II | |
| 210. |
Which of the following phase follows S and G2 phases of interphase? |
| A. | Prophase |
| B. | Metaphase |
| C. | Anaphase |
| D. | Telophase |
| Answer» B. Metaphase | |
| 211. |
Which phase of cell cycle is known as quiescent stage? |
| A. | M phase |
| B. | G0 phase |
| C. | G1 phase |
| D. | S phase |
| Answer» C. G1 phase | |
| 212. |
In cell cycle, DNA replication takes place in |
| A. | G1 phase |
| B. | G2 phase |
| C. | Mitotic metaphase |
| D. | S phase |
| Answer» E. | |
| 213. |
Pollination takes place in |
| A. | Gymnosperms |
| B. | Pteridophyta |
| C. | Both [a] & [b] |
| D. | None of these |
| Answer» B. Pteridophyta | |
| 214. |
The generic name of mango is |
| A. | Mangifera indica |
| B. | Helminthosporium oryzae |
| C. | Solarium tuberosum |
| D. | Lycopersicon esculentum |
| Answer» B. Helminthosporium oryzae | |
| 215. |
Which organelle in the cell, other than nucleus, contains DNA? [NDA] |
| A. | Endoplasmic reticulum |
| B. | Golgi apparatus |
| C. | Lysosome |
| D. | Mitochondria |
| Answer» E. | |
| 216. |
Which of the following group is present in animal cells? [NDA] |
| A. | Mitochondria, Cell membrane. Cell wall, Cytoplasm |
| B. | Chloroplasts, Cytoplasm, Vacuole, Nucleus |
| C. | Nucleus, Cell membrane, Mitochondria, Cytoplasm |
| D. | Vacuole, Cell membrane, Nucleus, Mitochondria |
| Answer» D. Vacuole, Cell membrane, Nucleus, Mitochondria | |
| 217. |
Largest group in Animal Kingdom is |
| A. | Mollusca |
| B. | Amphibia |
| C. | Arthropods |
| D. | Reptilia |
| Answer» D. Reptilia | |
| 218. |
Column-I Column-IIA.The name of the genus begins with a letter.P.underlinedB.The name of the species begin with a letter.Q.smallC. When printed the scientific name is in a letter.R.italicsD.When written by hand the scientific name is a letter.S.capitals |
| A. | A-Q; B-R; C-S; D-P |
| B. | A-P; B-Q; C-R; D-S |
| C. | A-S; B-R; C-Q; D-P |
| D. | A-S; B-Q; C-R; D-P |
| Answer» E. | |
| 219. |
Venus fly trap is a |
| A. | Bryophyta |
| B. | Pteridophyta |
| C. | Gymnosperm |
| D. | Angiosperm |
| Answer» E. | |
| 220. |
What part of the cell serves as the intracellular highway? |
| A. | Endoplasmic reticulum |
| B. | Golgi apparatus |
| C. | Cell membrane |
| D. | Mitochondria |
| Answer» B. Golgi apparatus | |
| 221. |
Which one among the following statements is correct? [CDS] |
| A. | Prokaryotic cells possess nucleus. |
| B. | Cell membrane is present both in plant and animal cells. |
| C. | Mitochondria and chloroplasts are not found in eukaryotic cells. |
| D. | Ribosomes are present in eukaryotic cells only. |
| Answer» C. Mitochondria and chloroplasts are not found in eukaryotic cells. | |
| 222. |
Which of the following parts are found in both plant and animal cells? [CDS] |
| A. | Cell membrane, Chloroplast, Vacuole |
| B. | Cell wall, Nucleus, Vacuole |
| C. | Cell membrane, Cytoplasm, Nucleus |
| D. | Cell wall, Chloroplast, Cytoplasm |
| Answer» D. Cell wall, Chloroplast, Cytoplasm | |
| 223. |
The other name of stamens is |
| A. | Gynoecium |
| B. | Calyx |
| C. | Androecium |
| D. | Corolla |
| Answer» D. Corolla | |
| 224. |
All the following are male reproductive parts except:- |
| A. | Prostrate gland |
| B. | Penis |
| C. | Testes |
| D. | Vagina |
| Answer» E. | |
| 225. |
External fertilization takes place in |
| A. | Crocodiles |
| B. | Frogs |
| C. | Tortoise |
| D. | Amoeba |
| Answer» C. Tortoise | |
| 226. |
Which one of the following genetic diseases is sex- linked? [IAS Prelim] |
| A. | Royal haemophilia |
| B. | Tay-Sachs disease |
| C. | Cystic fibrosis |
| D. | Hypertension |
| Answer» D. Hypertension | |
| 227. |
Which one of the following is monogamous? [IAS Prelim] |
| A. | Wolf |
| B. | Walrus |
| C. | Seal |
| D. | Deer |
| Answer» E. | |
| 228. |
In a bisexual flower, if androecium and gynoecium mature at different times, the phenomenon is known as [IAS Prelim] |
| A. | dichogamy |
| B. | herkogamy |
| C. | heterogamy |
| D. | monogamy |
| Answer» B. herkogamy | |
| 229. |
Assertion [A]: Amoeba reproduces by fission. Reason (R): All unicellular organisms reproduce by asexual methods. [IAS Prelim] |
| A. | Both A and R are individually true and R is the correct explanation of A |
| B. | Both A and Rare individually true but R is not the correct explanation of A |
| C. | A is true but R is false |
| D. | A is false but R is true |
| Answer» B. Both A and Rare individually true but R is not the correct explanation of A | |
| 230. |
The most important component of the oral contraceptive pills is |
| A. | progesterone |
| B. | growth hormone |
| C. | thyroxine |
| D. | luteinizing hormone |
| Answer» B. growth hormone | |
| 231. |
IUDs stands for |
| A. | Intra Uterine Devices |
| B. | Internal Uterine Devices |
| C. | Inseminated Uterine Devices |
| D. | Injected Uterine Devices |
| Answer» B. Internal Uterine Devices | |
| 232. |
'Saheli' a new oral contraceptive developed by |
| A. | All Indian Institute of Medical Science |
| B. | Central Drug Research Institute |
| C. | Health Care Pvt. Ltd. |
| D. | Bharat Immunologicals & Biologicals corp. Ltd. |
| Answer» C. Health Care Pvt. Ltd. | |
| 233. |
Cross pollination brings about .............. recombination in new plants. |
| A. | Genetic |
| B. | Chromosomes |
| C. | Genes |
| D. | Chromatids |
| Answer» B. Chromosomes | |
| 234. |
Vegetative propagation refers to formation of new plants from |
| A. | stem, roots and flowers |
| B. | stem, roots and leaves |
| C. | stem, flowers and fruits |
| D. | stem, leaves and flowers |
| Answer» C. stem, flowers and fruits | |
| 235. |
Fertilization takes place in the |
| A. | ovary sacs |
| B. | fallopian tube |
| C. | urethra |
| D. | vagina |
| Answer» C. urethra | |
| 236. |
Menstruation takes place as |
| A. | The egg is fertilized and is nourished. |
| B. | The egg is released from the ovaries and comes to the uterus. |
| C. | The egg released is not fertilized, the lining becomes thick and breaks down. |
| D. | None of the above. |
| Answer» D. None of the above. | |
| 237. |
The number of chromosomes in a female fertilized egg cell is |
| A. | 44 |
| B. | 21 |
| C. | 23 |
| D. | 46 |
| Answer» E. | |
| 238. |
When a seed matures into a seedling under favourable conditions it is called |
| A. | Fertilization |
| B. | Reproduction |
| C. | Pollination |
| D. | Germination |
| Answer» E. | |
| 239. |
In sweet potato vegetative propagation takes place by |
| A. | Root |
| B. | Stem |
| C. | Leaves |
| D. | All of them |
| Answer» B. Stem | |
| 240. |
The anther contains |
| A. | Sepals. |
| B. | Ovules. |
| C. | Carpel. |
| D. | Pollen grains. |
| Answer» E. | |
| 241. |
Contraception (to avoid pregnancy) can be attained by. |
| A. | use of condoms |
| B. | oral pills |
| C. | copper-T |
| D. | all of these above |
| Answer» E. | |
| 242. |
Pick out the mismatched pair in the following pairs:- A. Sperms \[\to \]testes B. Eggs \[\to \] ovaries C. Pollen \[\to \] anther D. Ovule \[\to \] somatic cell |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» E. | |
| 243. |
Nervous tissue is not found in |
| A. | brain |
| B. | spinal cord |
| C. | tendons |
| D. | nerves |
| Answer» D. nerves | |
| 244. |
Which tissue does lack blood supply and heals slowly? |
| A. | nervous |
| B. | muscle |
| C. | cartilage |
| D. | bone |
| Answer» D. bone | |
| 245. |
Cavity or lumen is narrow in |
| A. | Sclerenchyma |
| B. | Parenchyma |
| C. | Collenchyma |
| D. | Tracheids |
| Answer» B. Parenchyma | |
| 246. |
Which one among the following is the hardest part of our body? [NDA] |
| A. | Skull bones of head |
| B. | Thumb nails |
| C. | Enamel of teeth |
| D. | Spinal vertebra |
| Answer» D. Spinal vertebra | |
| 247. |
Which one among the following statements is correct? [NDA] |
| A. | All arteries carry oxygenated blood |
| B. | All veins carry oxygenated blood |
| C. | Except the pulmonary artery, all other arteries carry oxygenated blood |
| D. | Except the pulmonary vein, all other veins carry oxygenated blood |
| Answer» D. Except the pulmonary vein, all other veins carry oxygenated blood | |
| 248. |
Which one among the following statements about stomach is not correct? [NDA] |
| A. | Stomach acts as a temporary reservoir |
| B. | Stomach mixes food with gastric juice |
| C. | Stomach secretes lipase and amylase in gastric juice |
| D. | Rate of stomach emptying depends on the type of food |
| Answer» E. | |
| 249. |
The involvement of which one of the following is essential in the control of blood sugar? [NDA] |
| A. | Adrenal |
| B. | Pancreas |
| C. | Parathyroid |
| D. | Spleen |
| Answer» D. Spleen | |
| 250. |
List-IList-II [IAS Prelim]A.Fruit1.OvuleB.Seed2.LeafC.Wood3.StemD.Starch4.Ovary |
| A. | A-2; B-1; C-3; D- 4 |
| B. | A-4; B-1; C-3; D-2 |
| C. | A-2; B-3; C-1; D-4 |
| D. | A-4; B-3; C-1; D-2 |
| Answer» C. A-2; B-3; C-1; D-4 | |