MCQOPTIONS
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MCQOPTIONS
This section includes 5751 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
Which of the following did not help Darwin formulate his theory of evolution? |
| A. | Beleif that the earth was several thousand years old |
| B. | All of the above did help darwin |
| C. | Closely related species on oceanic islands |
| D. | Evidence of artificial selection in domestic animals |
| Answer» B. All of the above did help darwin | |
| 252. |
One of the important consequences of geographical isolation is: |
| A. | Preventing speciation |
| B. | Speciation through reproductive isolation |
| C. | Random creation of new species |
| D. | No change in the isolated fauna |
| Answer» C. Random creation of new species | |
| 253. |
Diversification in plant life appeared: |
| A. | Due to long periods of evolutionary changes |
| B. | Due to abrupt mutations |
| C. | Suddenly on earth |
| D. | By seed dispersal |
| Answer» B. Due to abrupt mutations | |
| 254. |
Which of the following pairs are analogous structures |
| A. | The front leg of a frog and a bat wing |
| B. | The wing of a bird and a butterfly wing |
| C. | The front leg of a horse and a human arm |
| D. | The front flipper of a porpoise and a human arm |
| Answer» C. The front leg of a horse and a human arm | |
| 255. |
Which one of the following sequences was proposed by Darwin and Wallace for organic evolution? |
| A. | Non-random evolution |
| B. | Natural selection |
| C. | Adaptive radiation |
| D. | Convergent evolution |
| Answer» E. | |
| 256. |
Where did Darwin observe closely related species of finches and closely related species of tortorises? |
| A. | England |
| B. | Australia |
| C. | The galapagos islands |
| D. | The cape verde island |
| Answer» D. The cape verde island | |
| 257. |
Which one of the following is modified stem- |
| A. | Carrot |
| B. | Sweat potato |
| C. | Coconut |
| D. | Potato |
| Answer» E. | |
| 258. |
Milk is poor source of- |
| A. | Iron |
| B. | Calcium |
| C. | Copper |
| D. | Sodium |
| Answer» B. Calcium | |
| 259. |
Normal human blood is : |
| A. | Acidic |
| B. | Alkaline |
| C. | Neutral |
| D. | None of these |
| Answer» C. Neutral | |
| 260. |
In cactus, the spiners are the modified- |
| A. | Stem |
| B. | Stipules |
| C. | Leaves |
| D. | Buds |
| Answer» D. Buds | |
| 261. |
Plants that grow in saline water are known as : |
| A. | Halophytes |
| B. | Hydrophytes |
| C. | Mesophytes |
| D. | Thallophytes |
| Answer» B. Hydrophytes | |
| 262. |
Major 'Basmati rice is produce in state- |
| A. | Kerala |
| B. | Andhra pradesh |
| C. | Karnataka |
| D. | Uttar pradesh |
| Answer» C. Karnataka | |
| 263. |
Photosynthesis takes place faster in ? |
| A. | Red light |
| B. | Yellow light |
| C. | White light |
| D. | Darkness |
| Answer» D. Darkness | |
| 264. |
A plant bud is- |
| A. | An embryonic shoot |
| B. | An embryonic leaf |
| C. | An embryonic stem |
| D. | A seed |
| Answer» B. An embryonic leaf | |
| 265. |
The deficiency of which of the following leads to dental caries ? |
| A. | Copper |
| B. | Iron |
| C. | Zinc |
| D. | Fluorine |
| Answer» E. | |
| 266. |
Carotene in Indian cow's milk causes ? |
| A. | White colour |
| B. | Yellow colour |
| C. | Deep yellow colour |
| D. | Creamish white colour |
| Answer» C. Deep yellow colour | |
| 267. |
Which one of the following is an enzyme ? |
| A. | Trypsin |
| B. | Insulin |
| C. | Somatotropin |
| D. | Glucagon |
| Answer» B. Insulin | |
| 268. |
Biofuel is obtained from the seed of - |
| A. | Jamun |
| B. | Jacaranda |
| C. | Jatropa |
| D. | Juniper |
| Answer» D. Juniper | |
| 269. |
Which of the following is a skin disease ? |
| A. | Scurvy |
| B. | Pellagra |
| C. | Rickets |
| D. | Anaemia |
| Answer» C. Rickets | |
| 270. |
Reproductive part of flower is- |
| A. | Androcieum and gynecium |
| B. | Sepal and petal |
| C. | Petal and androcium |
| D. | Sepal and gynecium |
| Answer» B. Sepal and petal | |
| 271. |
What is study of heart ? |
| A. | Dermatology |
| B. | Ecology |
| C. | Demography |
| D. | Cardiology |
| Answer» E. | |
| 272. |
A 'flower bud' which is uses as a spice is obtained from- |
| A. | Cinnamon |
| B. | Cardamon |
| C. | Clove |
| D. | Coriander |
| Answer» D. Coriander | |
| 273. |
Turpentine is got from- |
| A. | Angiosperm wod |
| B. | Angiosperm fruit |
| C. | Gymnosperm wood |
| D. | Pines cones |
| Answer» D. Pines cones | |
| 274. |
Which is responsible for the process of cell division ? |
| A. | Mitosis |
| B. | Fusion |
| C. | Fission |
| D. | Heterosis |
| Answer» B. Fusion | |
| 275. |
Cactus is reffered to as- |
| A. | Hydrophyte |
| B. | Mesophyte |
| C. | Xerophyte |
| D. | Epiphyte |
| Answer» D. Epiphyte | |
| 276. |
Which of the following is not a root? |
| A. | Potato |
| B. | Carrot |
| C. | Sweet potato |
| D. | Radish |
| Answer» B. Carrot | |
| 277. |
What would happen if human blood becomes acidic ? |
| A. | Oxygen-carrying capacity of haemoglobin is decrease |
| B. | Oxygen-carrying capacity of haemoglobin is increase |
| C. | Will be unpredictable |
| D. | Will be same |
| Answer» B. Oxygen-carrying capacity of haemoglobin is increase | |
| 278. |
Largest flower found in the world is- |
| A. | Raflesia |
| B. | Victoria |
| C. | Drosora |
| D. | Amerbel |
| Answer» B. Victoria | |
| 279. |
In a bisexual flower if androcium and gynoecium mature at different time the phenomenon is known as- |
| A. | Dichogamy |
| B. | Herpogamy |
| C. | Haterogamy monogamy |
| D. | None of these |
| Answer» B. Herpogamy | |
| 280. |
Phloem tissue is found in ? |
| A. | Insects |
| B. | Mammals |
| C. | Plants |
| D. | None of these |
| Answer» D. None of these | |
| 281. |
India is a largest producer and exporter of- |
| A. | Tea |
| B. | Coffee |
| C. | Wheat |
| D. | Rice |
| Answer» B. Coffee | |
| 282. |
The leaves used as wrappers for bides are obtained from which one of the following? |
| A. | Shikakai |
| B. | Rudraksha |
| C. | Tendu |
| D. | Lemon grass |
| Answer» D. Lemon grass | |
| 283. |
Which plant is called Herbnal-Indian Doctor? |
| A. | Neem |
| B. | Amla |
| C. | Mango |
| D. | Tulsi |
| Answer» E. | |
| 284. |
Agar-agar is prepared from- |
| A. | Algae |
| B. | Lichens |
| C. | Fungi |
| D. | Bryophyte |
| Answer» B. Lichens | |
| 285. |
Breeding and management of bees is known as : |
| A. | Apicultural |
| B. | Sericulture |
| C. | Pisciculture |
| D. | Silviculture |
| Answer» B. Sericulture | |
| 286. |
In India, cluster bean(Guar) is traditionally used as a vegetable or animal feed, but recently the cultivation of this has assumed significance. Which of the following statements is correct in this co |
| A. | The oil extracted from seeds is used in the manufacture |
| B. | The gum made from its seeds is used in the extraction of shale gas |
| C. | The leaf extract of this plant has the properties of antihistamines |
| D. | It is a source of high quality biodisel |
| Answer» C. The leaf extract of this plant has the properties of antihistamines | |
| 287. |
The richest source of vitamin D is |
| A. | Cheese |
| B. | Milk |
| C. | Cod liver oil |
| D. | Spinach |
| Answer» D. Spinach | |
| 288. |
Placenta is the structure formed : |
| A. | By the union of foetal and uterine tissue |
| B. | By uterine only |
| C. | By fusion of germ layers |
| D. | By foetus only |
| Answer» B. By uterine only | |
| 289. |
Who is known as father of Genetics ? |
| A. | Henry |
| B. | Morgan |
| C. | F.b. morrison |
| D. | G.j mandel |
| Answer» E. | |
| 290. |
Spice saffron is obtained from which part of plant- |
| A. | Leaf |
| B. | Patal |
| C. | Sepal |
| D. | Stigma |
| Answer» E. | |
| 291. |
Most highly intelligent mammals are : |
| A. | Whales |
| B. | Dolphins |
| C. | Elephants |
| D. | Kangaroos |
| Answer» C. Elephants | |
| 292. |
Which of the following tests helps in diagnosis of cancer ? |
| A. | Biopsy test |
| B. | Urine test |
| C. | Blood test |
| D. | Neuro test |
| Answer» B. Urine test | |
| 293. |
A clone is a group of individuals obtained through- |
| A. | Self pollination |
| B. | Micropropagation |
| C. | Hybridisation |
| D. | Cross pollination |
| Answer» C. Hybridisation | |
| 294. |
What is Anthology ? |
| A. | Study of male reproductive organ. |
| B. | Study of bryophytes |
| C. | Study of flowers and flowering plants |
| D. | Study of blood vascular system. |
| Answer» D. Study of blood vascular system. | |
| 295. |
IR-20 is a high yielding variety of- |
| A. | Cotton |
| B. | Rice |
| C. | Wheat |
| D. | Sugarcane |
| Answer» C. Wheat | |
| 296. |
The compound used in anti-malarial drug is |
| A. | Neoprene |
| B. | Isoprene |
| C. | Aspirin |
| D. | Chloroquin |
| Answer» E. | |
| 297. |
Diabetes is caused by lack of |
| A. | Calcium |
| B. | Vitamin |
| C. | Insulin |
| D. | Sugars |
| Answer» D. Sugars | |
| 298. |
In a human body, the basic building block are |
| A. | Cells |
| B. | Bones |
| C. | Nerves |
| D. | Muscles |
| Answer» B. Bones | |
| 299. |
Plants receive their nutrients mainly from ? |
| A. | Chlorophyll |
| B. | Atmosphere |
| C. | Light |
| D. | Soil |
| Answer» E. | |
| 300. |
Oxygen in our blood is transported by |
| A. | Haemoglobin |
| B. | Collagen |
| C. | Keratin |
| D. | Myoglobin |
| Answer» B. Collagen | |