MCQOPTIONS
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MCQOPTIONS
This section includes 1275 Mcqs, each offering curated multiple-choice questions to sharpen your Biology Mcqs knowledge and support exam preparation. Choose a topic below to get started.
| 1151. |
Which of the following excretory structure is associated with gut of the organism? |
| A. | Protonephridium |
| B. | Metanephridium |
| C. | Malpighian tubules |
| D. | Nephrons |
| Answer» D. Nephrons | |
| 1152. |
Which of the following kidney stones are most common? |
| A. | Calcium oxalate |
| B. | Calcium phosphate |
| C. | Uric acid |
| D. | All of these |
| Answer» B. Calcium phosphate | |
| 1153. |
Which of the following nephrons play important role in production of concentrated urine? |
| A. | Crotical |
| B. | Medullary |
| C. | Juxtramedullary |
| D. | None of these |
| Answer» D. None of these | |
| 1154. |
Which of the following treatment will be administered first in a newly diagnosed renal failure patient? |
| A. | Renal transplant |
| B. | Peritoneal Dialysis |
| C. | Lithotripsy |
| D. | Hemodialysis |
| Answer» E. | |
| 1155. |
On which of the following site the posterior pituitary hormone acts predominantly? |
| A. | Proximal convoluted tubule |
| B. | Descending limb of loop of Henle |
| C. | Ascending limb of loop of Henle |
| D. | Collecting tubules |
| Answer» E. | |
| 1156. |
Blubber a thick layer of fat is present in___________? |
| A. | Fresh water mammals |
| B. | Terrestrial mammals |
| C. | Marine Mammals |
| D. | Flying mammals |
| Answer» D. Flying mammals | |
| 1157. |
Which of the following structure in plant’s body is called excretophores? |
| A. | Stem |
| B. | Leaves |
| C. | Flowers |
| D. | Roots |
| Answer» C. Flowers | |
| 1158. |
Marine fish can keep their internal environment hypertonic with respect to the surrounding salty water by retaining. |
| A. | Excessive urea which will increase their internal solute concentration and prevent body shrinkage in hypertonic environment |
| B. | Trimethyl alanine |
| C. | Ammonia |
| D. | Trimethylamine oxide |
| Answer» E. | |
| 1159. |
Animals that produce metabolic heat at low level and also absorb heat from the surroundings are called__________? |
| A. | Endotherms |
| B. | Ectotherms |
| C. | Heterotherms |
| D. | Homeotherms |
| Answer» D. Homeotherms | |
| 1160. |
In a hot summer after noon, if your body’s Homeostatic machinery keep your internal temperature quite lower than that of external than this is an example of____________? |
| A. | Positive feed back |
| B. | Negative feed back |
| C. | Feed back |
| D. | Osmoregulation |
| Answer» C. Feed back | |
| 1161. |
The characteristic which enable animals to tolerate dehydration is called__________? |
| A. | Osmoconformation |
| B. | Osmoregulaton |
| C. | Anhydrobiosis |
| D. | Anhydrosis |
| Answer» D. Anhydrosis | |
| 1162. |
Terrestrial animals like kangaroo rat survive even without drinking water since__________? |
| A. | They don’t require water for their metabolic process |
| B. | They can retain excessive water in their body during raining season |
| C. | They feed on carbohydrate rich seeds which can provide them with metabolic water |
| D. | They are anhydrobiotic organisms |
| Answer» E. | |
| 1163. |
Rose is an example of____________? |
| A. | Hydrophytes |
| B. | Mesophytes |
| C. | Xerophytes |
| D. | Halophytes |
| Answer» C. Xerophytes | |
| 1164. |
Aquatic animals excrete nitrogenous waste commonly in the form of_____________? |
| A. | Ammonia |
| B. | Urea |
| C. | Uric acid |
| D. | Trimethylamine oxide |
| Answer» B. Urea | |
| 1165. |
Which of the following fish drink large amount of sea water and excrete concentrated urine resulting in maximum salt excretion and minimal water loss? |
| A. | Hagfish |
| B. | Fresh water fishes |
| C. | Bony fishes |
| D. | None of these |
| Answer» D. None of these | |
| 1166. |
Normal body temperature in mamals like human beings is____________? |
| A. | 26 – 28°C |
| B. | 36 – 38°C |
| C. | 46 – 48°C |
| D. | 56 – 58°C |
| Answer» C. 46 – 48°C | |
| 1167. |
Which of the following is most toxic? |
| A. | Ammonia |
| B. | Urea |
| C. | Uric acid |
| D. | Trimethylamine oxide |
| Answer» B. Urea | |
| 1168. |
Malphighian tubules absorb waste materials and salts from__________? |
| A. | Blood |
| B. | Lymph |
| C. | Gut |
| D. | Hemolymph |
| Answer» E. | |
| 1169. |
Which of the following animal excrete nitrogenous waste mainly as uric acid? |
| A. | Hydra |
| B. | Planaria |
| C. | Humans |
| D. | Birds |
| Answer» E. | |
| 1170. |
Which of the following openings have cilia? |
| A. | Nephrostome |
| B. | Nephridiopore |
| C. | Both of these |
| D. | None of these |
| Answer» B. Nephridiopore | |
| 1171. |
Which of the following filtrate contains excessive amount of amino acids, glucose, and salts? |
| A. | Glomerular filtrate |
| B. | Filtrate passing through ascending limb |
| C. | Filtrate passing through distal conveluted tubule |
| D. | Filtrate passing through collecting tubules |
| Answer» B. Filtrate passing through ascending limb | |
| 1172. |
The nephridia of earthworm open into the coelom by_________? |
| A. | Nephrostome |
| B. | Nephridiopore |
| C. | Flame cell |
| D. | Anus |
| Answer» B. Nephridiopore | |
| 1173. |
Mammalian kidney, under restricted water supply can conserve water by over ________ % reabsorption of glomerular filtrate |
| A. | 80.50% |
| B. | 90.50% |
| C. | 95.50% |
| D. | 99.50% |
| Answer» E. | |
| 1174. |
In mouth cavity of many molluscs there is a rasping tongue like structure_________provided with many horny teeth. |
| A. | Ligule |
| B. | Radula |
| C. | Mantle |
| D. | Muscle |
| Answer» C. Mantle | |
| 1175. |
Snails belong to__________? |
| A. | Cephalopodsxc |
| B. | Gastropods |
| C. | Bivalves |
| D. | Athropods |
| Answer» C. Bivalves | |
| 1176. |
Diatoms are found in__________? |
| A. | Phytoplanktonic population |
| B. | Freshwater lakes and ponds |
| C. | Marine environment |
| D. | All of the above |
| Answer» E. | |
| 1177. |
Unlike other algae, diatoms do not readily decay due to___________? |
| A. | Nonliving cells |
| B. | Siliceous wall |
| C. | Mucilaginous wall |
| D. | Water proof cell |
| Answer» C. Mucilaginous wall | |
| 1178. |
The wax present on the body of cockroach is secreted: |
| A. | Mucocytes |
| B. | Leucocytes |
| C. | Oenocytes |
| D. | Granulocytes |
| Answer» D. Granulocytes | |
| 1179. |
Diatoms belong to___________? |
| A. | Chrysophyta |
| B. | Bacillariophyceae |
| C. | Xanthophyceae |
| D. | Both A. and B. |
| Answer» E. | |
| 1180. |
Cell wall is extremely well preserved in fossil specimens in__________? |
| A. | Diatoms |
| B. | Dinoflagellates |
| C. | Slime moulds |
| D. | None of these |
| Answer» B. Dinoflagellates | |
| 1181. |
Empty diatom cells are called___________? |
| A. | Raphe |
| B. | Valves |
| C. | Frustule |
| D. | Girdles |
| Answer» D. Girdles | |
| 1182. |
The chloroplasts of diatoms and chrysophycean algae do not possess____________? |
| A. | Chloryphyllpigments |
| B. | Enzymes for photolysis |
| C. | Defined grana and stroma |
| D. | Carotenes with chlorophylls |
| Answer» D. Carotenes with chlorophylls | |
| 1183. |
Diatom frustule/ shell is made of_____________? |
| A. | Silica |
| B. | Calcium carbonate |
| C. | Manesium carbonate |
| D. | Both B. and C. |
| Answer» B. Calcium carbonate | |
| 1184. |
Which one of these is a set of useful insects? |
| A. | Sandfly , butterfly, hoeybee |
| B. | Sikmoth, honeybee, locust |
| C. | Honeybee, silkmoth, tsetse fly |
| D. | Honeybee , lac insect, cochineal insect |
| Answer» E. | |
| 1185. |
Which one of these is an insect? |
| A. | Mite |
| B. | Spider |
| C. | Moth |
| D. | Scorpion |
| Answer» D. Scorpion | |
| 1186. |
A moth is closely related to_________? |
| A. | Wasp |
| B. | Beetle |
| C. | Cricket |
| D. | Butterfly |
| Answer» E. | |
| 1187. |
Which of the following organ is responsible for blood filtration: |
| A. | Liver |
| B. | Kidney |
| C. | Lungs |
| D. | Heart |
| Answer» C. Lungs | |
| 1188. |
The utilization of the products of digestion is called___________? |
| A. | ingestion |
| B. | absorption |
| C. | assimilation |
| D. | both a and b |
| Answer» D. both a and b | |
| 1189. |
Humans can hear in the range of ______ to _______Hertz (Hz).? |
| A. | 10 Hz to 10,000 Hz. |
| B. | 20 Hz to 20,000 Hz. |
| C. | 30 Hz to 30,000 Hz. |
| D. | 40 Hz to 40,000 Hz. |
| Answer» C. 30 Hz to 30,000 Hz. | |
| 1190. |
Simple tissues and complex tissues are two groups of_________tissues. |
| A. | Meristematic |
| B. | Permanent |
| C. | Epidermal |
| D. | Supporting |
| Answer» C. Epidermal | |
| 1191. |
Which of the following is a selectively permeable membrane? |
| A. | cell wall |
| B. | cytoplasm |
| C. | cell membrane |
| D. | none of these |
| Answer» D. none of these | |
| 1192. |
Which of the following endoplasmic reticulum has no ribosome on its surface? |
| A. | smooth |
| B. | rough |
| C. | both |
| D. | all of above |
| Answer» B. rough | |
| 1193. |
Xylem and phloem are conducting tissues found in ……….? |
| A. | animals |
| B. | plants |
| C. | micro orgamnisms |
| D. | all the above |
| Answer» C. micro orgamnisms | |
| 1194. |
which of the following consists of the dead cells? |
| A. | Parenchyma |
| B. | collenchyma |
| C. | sclerenchyma |
| D. | none of these |
| Answer» D. none of these | |
| 1195. |
Human brain contains__________neurons. |
| A. | 10,000,00 |
| B. | 100,000,000 |
| C. | 100,000,000,000 |
| D. | 1000 |
| Answer» D. 1000 | |
| 1196. |
Which of the following are connective tissues? |
| A. | cartilage |
| B. | bone |
| C. | blood |
| D. | all the above |
| Answer» E. | |
| 1197. |
Which one of these structures involved in replication of bacterial dna? |
| A. | chromosomes |
| B. | pilli |
| C. | plasmid |
| D. | mesosome |
| Answer» E. | |
| 1198. |
Who discovered the peptic ulcer causing bacteria H.PYLORI? |
| A. | Robert Hook |
| B. | James parkinson |
| C. | Dr Barry Marshall and dr Robin Warren |
| D. | None of these |
| Answer» D. None of these | |
| 1199. |
Adult human brain is about_________% of the total body weight. |
| A. | 2% |
| B. | 3% |
| C. | 7% |
| D. | 8% |
| Answer» B. 3% | |
| 1200. |
The plants which produce embryo but lack vascular tissues and seeds are placed in_________? |
| A. | bryophytes |
| B. | pteridophytes |
| C. | tracheophytes |
| D. | all of these |
| Answer» B. pteridophytes | |