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MCQOPTIONS
This section includes 14620 Mcqs, each offering curated multiple-choice questions to sharpen your NEET knowledge and support exam preparation. Choose a topic below to get started.
| 11151. |
Assertion : Enzyme substrate complex remains throughout the reaction. Reason : The greater the affinity of the enzyme for a substrate, the higher is the catalytic activity. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» F. | |
| 11152. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : Heterotrichous filaments are more advanced than branched filaments. Reason : Heterotrichous filaments have prostrate and projecting system. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 11153. |
Which of the following features would distinguish a monocot from a dicot plant |
| A. | Aestivation |
| B. | Vernation |
| C. | Phyllotaxy |
| D. | Venation |
| Answer» E. | |
| 11154. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : Bacteria are prokaryotic. Reason : Bacteria do not possess true nucleus and membrane bound cell organelles. [AIIMS 1996] |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 11155. |
Substrate of amylase enzyme is [J & K CET 2005] |
| A. | Protein |
| B. | Fat |
| C. | Starch |
| D. | Sucrose |
| Answer» D. Sucrose | |
| 11156. |
Tortoise are [EAMCET 1977] |
| A. | Viviparous |
| B. | Oviparous |
| C. | Bisexual |
| D. | Parthenogenic |
| Answer» C. Bisexual | |
| 11157. |
Phosphorus cycle is |
| A. | Gaseous cycle |
| B. | Perfect cycle |
| C. | Imperfect cycle |
| D. | Partly gaseous and partly sedimentary |
| Answer» D. Partly gaseous and partly sedimentary | |
| 11158. |
Pear-shaped head, sharply separated from rest of the body and coverd with small scales is a feature of [MP PMT 1989] |
| A. | Pythons |
| B. | Vipers |
| C. | Kraits |
| D. | Cobras |
| Answer» C. Kraits | |
| 11159. |
Solar energy transducer is |
| A. | Agaricus |
| B. | Rhizobium |
| C. | Orobanche |
| D. | Chlorella |
| Answer» E. | |
| 11160. |
Relative to roots, the shoots are massive in plants of [CPMT 1992] |
| A. | Deserts |
| B. | Moist temperate |
| C. | Tundra |
| D. | Moist tropical forests |
| Answer» E. | |
| 11161. |
Sap of which plant is considered as a good substitute for diesel oil |
| A. | Euphorbia sp |
| B. | Copaifera longsdorfii |
| C. | Calotropis procera |
| D. | Manihot glaziovii |
| Answer» C. Calotropis procera | |
| 11162. |
A major component of gobar gas is [CBSE PMT 2004] |
| A. | Ethane |
| B. | Butane |
| C. | Ammonia |
| D. | Methane |
| Answer» E. | |
| 11163. |
Wild life conservation means the protection and preservation of [BHU 2004] |
| A. | Ferocious wild animals only |
| B. | Wild plants only |
| C. | Non-cultivated plants and non-domesticated animals |
| D. | All the above living in natural habitat |
| Answer» E. | |
| 11164. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : Hypnotic drugs induce sleep. Reason : Central nervous system is sensitive to hypnotic drugs. |
| A. | If both assertion and reason are true and the reason is the correct explanation of the assertion. |
| B. | If both assertion and reason are true but reason is not the correct explanation of the assertion. |
| C. | If assertion is true but reason is false. |
| D. | If the assertion and reason both are false. |
| E. | If assertion is false but reason is true. |
| Answer» B. If both assertion and reason are true but reason is not the correct explanation of the assertion. | |
| 11165. |
Cellular structure always disappears during mitosis is [DPMT 1990] |
| A. | Cell wall |
| B. | Cell membrane |
| C. | Nucleolus |
| D. | All the above |
| Answer» D. All the above | |
| 11166. |
Utility of fungi for steroid conversion was demonstrated by [EAMCET 1988] |
| A. | Pasteur and Jaubert |
| B. | Kohler and Milstein |
| C. | Murray and Peterson |
| D. | Waksman and Woodruff |
| Answer» D. Waksman and Woodruff | |
| 11167. |
A frog has [MP PMT 1990] |
| A. | Hands but no fingers |
| B. | Ears but no pinnae |
| C. | Eyes but no lids |
| D. | Jaws but no teeth |
| Answer» C. Eyes but no lids | |
| 11168. |
Overgrazing causes [AIIMS 1985] |
| A. | Negative pollution |
| B. | Positive pollution |
| C. | Soil erosion |
| D. | Reduction in crop yield |
| Answer» B. Positive pollution | |
| 11169. |
Aquatic fern which is an excellent biofertilizer [CBSE PMT 1999, 2000,01] |
| A. | Salvinia |
| B. | Azolla |
| C. | Marsilea |
| D. | Pteridium |
| Answer» C. Marsilea | |
| 11170. |
Assertion : Sexual reproduction in protozoan is not a frequent occurrence. Reason : Sexual reproduction has no significance. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» D. If both the assertion and reason are false | |
| 11171. |
Assertion : Columnar epithelium lining the intestinal mucosa appears to have a brush like appearance. Reason : A large number of microvilli are present on brush bordered columnar epithelium. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 11172. |
Which of the following is bacterial disease [CPMT 1975, 81; MP PMT 1984, 86, 89, 90] |
| A. | Measels |
| B. | Small pox |
| C. | Rabies |
| D. | Tuberculosis |
| Answer» E. | |
| 11173. |
Which is correct for the structure of cell wall of bacteria and fungi [MHCET 2003] |
| A. | Both are made up of cellulose |
| B. | Both have mucopeptide |
| C. | Both are made up of N-acetylglucosamine |
| D. | None of these |
| Answer» D. None of these | |
| 11174. |
Which one is a bio fertilizer [BVP 2001] |
| A. | VAM |
| B. | Sporeine |
| C. | Devine |
| D. | Agent Orange |
| Answer» B. Sporeine | |
| 11175. |
Assertion : Ramenta are scales which cover young rhizome and leaves of Dryopteris. Reason : Pteridium lacks rementa. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» C. If the assertion is true but the reason is false | |
| 11176. |
Read the assertion and reason carefully: Assertion : Stem develops from hypocotyl of embryo. Reason : Internodes bear axillary buds. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» E. If the assertion is false but reason is true | |
| 11177. |
In meiosis the daughter cells are not similar to that of parent because of [AFMC 2005] |
| A. | Crossing over |
| B. | Synapsis |
| C. | Both (a) and (b) |
| D. | None of these |
| Answer» B. Synapsis | |
| 11178. |
Plague is a bacterial disease caused by [AFMC 1996] |
| A. | Posteurella pestis |
| B. | Clostridium |
| C. | Mycobacterium |
| D. | Vibrio |
| Answer» B. Clostridium | |
| 11179. |
Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : Genital herpes cannot be cured. Reason : Genital herpes can be inhibited by Acyclovir. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» C. If the assertion is true but the reason is false | |
| 11180. |
Forests should be conserved as they provide [Pb. PMT 2000] |
| A. | Food |
| B. | Medicine |
| C. | Wood |
| D. | All of these |
| Answer» E. | |
| 11181. |
In man, the composition of female destined zygote is [CPMT 1984; DPMT 1985; CMC Vellore 1993] |
| A. | 22 + X |
| B. | 44 + XX |
| C. | 22 + Y |
| D. | 44 + XY |
| Answer» C. 22 + Y | |
| 11182. |
Yeast is an important source of [MP PMT 1999] |
| A. | Vitamin C |
| B. | Riboflavin |
| C. | Sugars |
| D. | Proteins |
| Answer» C. Sugars | |
| 11183. |
Chloramphenicol and erythromycin (broad spectrum antibiotics) are produced by [AFMC 1986] |
| A. | Streptomyces |
| B. | Nitrobacter |
| C. | Rhizobium |
| D. | Penicillium |
| Answer» B. Nitrobacter | |
| 11184. |
Green manuring enhances crop yield by [RPMT 1986] |
| A. | 5 -10% |
| B. | 15 -25% |
| C. | 30 -50% |
| D. | 60 -70% |
| Answer» D. 60 -70% | |
| 11185. |
Zoological name of common Indian Krait is [Orissa JEE 2005] |
| A. | Bungarus coeruleus |
| B. | Ophiopagus hannah |
| C. | Viper russeli |
| D. | Naja naja |
| Answer» B. Ophiopagus hannah | |
| 11186. |
Intracellular compartments are not found in cells of [MP PMT 1997] |
| A. | Lower plants |
| B. | Prokaryotes |
| C. | Higher plants |
| D. | Eukaryotes |
| Answer» C. Higher plants | |
| 11187. |
Which of the following animals is an example of class mammalia [MP PMT 1998] |
| A. | Manis |
| B. | Planorbis |
| C. | Hydrophis |
| D. | Psittacula |
| Answer» B. Planorbis | |
| 11188. |
Curding of milk takes place by [CPMT 1991] |
| A. | Streptococcus lactis |
| B. | Streptococcus thermophillus |
| C. | Lactobacillus lactis |
| D. | All the above |
| Answer» E. | |
| 11189. |
Assertion : During protein synthesis, ribosomes form polysomes. Reason : Different ribosomes of a polysome utilize a single strand of mRNA. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 11190. |
A well known bird sanctuary of our country is situated at [MP PMT 1996] |
| A. | Bandipur |
| B. | Kaziranga |
| C. | Palamu |
| D. | Bharatpur |
| Answer» E. | |
| 11191. |
Assertion : DNA found in mitochondria and chloroplast are called prochromosome. Reason : They are similar to prokaryotic chromosome. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 11192. |
Read the assertion and reason carefully: Assertion : In syngenesious stamen, the filaments are fused and the anther are free. Reason : In synandrous stamen, both filaments and anthers are fused. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» F. | |
| 11193. |
Biome represents |
| A. | All the organisms of earth |
| B. | Flora of a land |
| C. | Flora and fauna of a land |
| D. | A major ecosystem delimited by climate or geography |
| Answer» E. | |
| 11194. |
Which of the following pesticides is an acetylcholinesterase inhibitor [CBSE PMT 1998; MP PMT 2003] |
| A. | Aldrin |
| B. | Y-BHC |
| C. | Endosulfan |
| D. | Malathion |
| Answer» E. | |
| 11195. |
The part of earth and atmosphere supporting life is [AMU 1991; CPMT 1994, 98; Pb. PMT 1999; BHU 2000; MP PMT 2001] |
| A. | Biosphere |
| B. | Biome |
| C. | Ecotone |
| D. | Biota |
| Answer» B. Biome | |
| 11196. |
Balbiani rings are found in [KCET 2004] |
| A. | All chromosomes |
| B. | Lampbrush chromosome |
| C. | Dicot stems |
| D. | Polytene chromosome |
| Answer» E. | |
| 11197. |
Which of the following is a nitrogen fixer [HP PMT 2005] |
| A. | Ulothrix |
| B. | Anabaena |
| C. | Ulva |
| D. | Hydrodictyon |
| Answer» C. Ulva | |
| 11198. |
Read the assertion and reason carefully: Assertion : Deep feeder tap root system is called cymose tap root system. Reason : Deep feeder root system is found in trees. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» F. | |
| 11199. |
Assertion : F.hepatica undergoes both aerobic and anaerobic respiration. Reason : Fasciola respire only in absence of oxygen. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» D. If both the assertion and reason are false | |
| 11200. |
Assertion : Pila has dual mode of respiration. Reason : Pila leads an amphibious life. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |