MCQOPTIONS
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MCQOPTIONS
This section includes 1212 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
Which of the following is not present in mitochondria? |
| A. | Enzymes |
| B. | Co-enzymes |
| C. | Ribosomes |
| D. | Thylakoids |
| Answer» E. | |
| 152. |
Which of the following is not nocturnal? |
| A. | Bedbug |
| B. | Mosquito |
| C. | Butterfly |
| D. | Cockroach |
| Answer» D. Cockroach | |
| 153. |
Which of the following is most toxic? |
| A. | Ammonia |
| B. | Urea |
| C. | Uric acid |
| D. | Trimethylamine oxide |
| Answer» B. Urea | |
| 154. |
Which of the following is most constant abiotic component of ecosystem___________? |
| A. | Air |
| B. | Water |
| C. | Land |
| D. | Gravity |
| Answer» E. | |
| 155. |
Which of the following is largest part of brain? |
| A. | Cerebrum |
| B. | Cerebellum |
| C. | Medulla oblongata |
| D. | Thalamus |
| Answer» B. Cerebellum | |
| 156. |
Which of the following is incorrect for the lysogenic cycle in life cycle of bacteriophage_____________? |
| A. | Phage when gets incorporated with the bacterial chromosome is called prophage |
| B. | The bacterium continues to live and reproduce normally |
| C. | Lysogenic bacteria may get infected by the related phage |
| D. | The cycle may convert into lytic type resulting from environmental exposure |
| Answer» D. The cycle may convert into lytic type resulting from environmental exposure | |
| 157. |
which of the following is called protein synthesizing machine? |
| A. | mitochondria |
| B. | nucleus |
| C. | chromosomes |
| D. | ribosomes |
| Answer» E. | |
| 158. |
Which of the following is called black bread mold? |
| A. | Pilobolus |
| B. | Penicillium |
| C. | Neurospora |
| D. | Rhizopus |
| Answer» E. | |
| 159. |
Which of the following is antagonist to Auxin in terms of promotion of stem growth______________? |
| A. | Gibberellins |
| B. | Cytokinins |
| C. | Abscisic Acid |
| D. | none of these |
| Answer» D. none of these | |
| 160. |
Which of the following is an RNA virus: |
| A. | Influenza virus |
| B. | Herpes virus |
| C. | HBV |
| D. | Pox virus |
| Answer» B. Herpes virus | |
| 161. |
Which of the following is an example of the living member of Psilopsida________________? |
| A. | Rhynia |
| B. | Psilophyton |
| C. | Psilotum |
| D. | Cooksonia |
| Answer» D. Cooksonia | |
| 162. |
Which of the following is an example of “molecule”? |
| A. | Chloroplast |
| B. | A Nerve Cell |
| C. | DNA |
| D. | Hydrogen |
| Answer» D. Hydrogen | |
| 163. |
Which of the following is an autosomal disorder______________? |
| A. | Down’s syndrome |
| B. | Klinifelter’s syndrome |
| C. | Turner’s syndrome |
| D. | Jacob’s syndrome |
| Answer» B. Klinifelter’s syndrome | |
| 164. |
Which of the following is a uni-nucleated cell? |
| A. | A smooth muscle cell. |
| B. | A cardiac muscle cell. |
| C. | A skeletal muscle cell. |
| D. | All of these |
| Answer» B. A cardiac muscle cell. | |
| 165. |
Which of the following is a sentimentally arranged excretory system? |
| A. | Protonephridium |
| B. | Metanephridium |
| C. | Malpighian tubules |
| D. | Nephrons |
| Answer» C. Malpighian tubules | |
| 166. |
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 | |
| 167. |
Which of the following is a compensation point: |
| A. | Leaves respire and utilize O2 and release CO2. |
| B. | Photosynthesis and respiration occur at same rate. So there is not net exchange of gases between atmosphere and plants. |
| C. | Rate of photosynthesis increases, so do the O2 production, with a net release of oxygen coupled with the uptake of CO2. |
| D. | Rate of respiration becomes more than rate of photosynthesis. |
| Answer» C. Rate of photosynthesis increases, so do the O2 production, with a net release of oxygen coupled with the uptake of CO2. | |
| 168. |
Which of the following is a chemical link between catabolism and anabolism? |
| A. | AMP |
| B. | ADP |
| C. | ATP |
| D. | All of these |
| Answer» D. All of these | |
| 169. |
Which of the following ions are involved in the initiation of nerve impulse_______________? |
| A. | Na+ |
| B. | K+ |
| C. | Fe |
| D. | none of these |
| Answer» B. K+ | |
| 170. |
Which of the following impart a red colour to Rose petals? |
| A. | Chloroplast |
| B. | Chlorophyll |
| C. | Chromoplast |
| D. | Leucoplast |
| Answer» D. Leucoplast | |
| 171. |
Which of the following hormone is predominantly responsible for bone weakening in older women? |
| A. | Progesterone |
| B. | Oestrogen |
| C. | Parathyroid hormone |
| D. | Calcitonin |
| Answer» C. Parathyroid hormone | |
| 172. |
Which of the following hormone is polypeptide in nature____________? |
| A. | Insulin |
| B. | Thyroxine |
| C. | ADH |
| D. | Cortisone |
| Answer» D. Cortisone | |
| 173. |
which of the following hepatitis is more contagious ? |
| A. | HAV |
| B. | HBV |
| C. | HCV |
| D. | HDV |
| Answer» D. HDV | |
| 174. |
Which of the following help cyanobacteria to locomote? |
| A. | Flagella |
| B. | Gas vesicles |
| C. | Both of these |
| D. | None of these |
| Answer» C. Both of these | |
| 175. |
Which of the following have thickest walls? |
| A. | Arteries |
| B. | Veins |
| C. | Capillaries |
| D. | None of these |
| Answer» B. Veins | |
| 176. |
Which of the following has no central nervous system? |
| A. | Hydra |
| B. | Man |
| C. | Planaria |
| D. | Cockroach |
| Answer» B. Man | |
| 177. |
Which of the following group of tracheophyta has expanded or scale like leaves which are alwaysed arranges in whorls? |
| A. | Psilopsida |
| B. | Lycopsida |
| C. | Sphenopsida |
| D. | Prteropsida |
| Answer» D. Prteropsida | |
| 178. |
Which of the following group represent pathological fungi______________? |
| A. | Mushrooms morels and truffles |
| B. | Rusts smuts and molds |
| C. | Penicillium |
| D. | All of these |
| Answer» C. Penicillium | |
| 179. |
which of the following gives to rise two daughter cell during cell division? |
| A. | meiosis |
| B. | mitosis |
| C. | both a & b |
| D. | none of these |
| Answer» C. both a & b | |
| 180. |
which of the following gas discovered by Scheele? |
| A. | chlorine |
| B. | hydrogen |
| C. | oxygen |
| D. | carbon dioxide |
| Answer» B. hydrogen | |
| 181. |
Which of the following fishes contained lungs? |
| A. | Lamprey |
| B. | Perch |
| C. | Plaice |
| D. | Dipnoi |
| Answer» E. | |
| 182. |
Which of the following fishes excrete large volume of diluted urine? |
| A. | Bony Marine fishes |
| B. | Fresh water fishes |
| C. | Both depending upon the surrounding water |
| D. | None of these |
| Answer» C. Both depending upon the surrounding water | |
| 183. |
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 | |
| 184. |
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 | |
| 185. |
Which of the following feature is not related to neuron? |
| A. | Conduction |
| B. | Regeneration |
| C. | Reflex |
| D. | Movement |
| Answer» C. Reflex | |
| 186. |
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 | |
| 187. |
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 | |
| 188. |
Which of the following does not show quaternary structure____________? |
| A. | Haemoglobin |
| B. | Pepsin |
| C. | Fibrin |
| D. | Insulin |
| Answer» D. Insulin | |
| 189. |
Which of the following disease results in Paralysis due to viral attack on C.N.S: |
| A. | Measles |
| B. | Herpes simplex |
| C. | Hepatitis |
| D. | Polio |
| Answer» E. | |
| 190. |
Which of the following cytoskeletal fiber contain tubulin protein? |
| A. | One which help in assembly of spindles during mitosis. |
| B. | One involved in internal cell motion. |
| C. | One involved in maintenance of cell shape. |
| D. | Both b and c |
| Answer» B. One involved in internal cell motion. | |
| 191. |
Which of the following cytoplasmic extensions carry the message toward the cell body___________? |
| A. | Dendrites |
| B. | Axon |
| C. | Both of these |
| D. | none of these |
| Answer» B. Axon | |
| 192. |
Which of the following contains genes for drug and disease resistance in bacteria? |
| A. | Necleotide |
| B. | Plasmid |
| C. | Mesosome |
| D. | Ribosome |
| Answer» C. Mesosome | |
| 193. |
Which of the following constituent is/are maximum in the filtrate that leaves proximal convoluted tubules? |
| A. | Glucose |
| B. | Amino acids |
| C. | Nitrogenous waste |
| D. | All of these |
| Answer» D. All of these | |
| 194. |
which of the following consists of the dead cells? |
| A. | Parenchyma |
| B. | collenchyma |
| C. | sclerenchyma |
| D. | none of these |
| Answer» D. none of these | |
| 195. |
Which of the following combination is an example of self replicating organelles? |
| A. | Mitochondria Ribosomes |
| B. | Mitochondria Nucleus |
| C. | Mitochondria Chloroplast |
| D. | Mitochondria Vacuole |
| Answer» D. Mitochondria Vacuole | |
| 196. |
Which of the following cells are involved in soft callus formation? |
| A. | Fibroblast and osteoblast |
| B. | Osteoblast and osteoclast |
| C. | Osteoclast and osteocyte |
| D. | Onteocyte and osteoblast |
| Answer» B. Osteoblast and osteoclast | |
| 197. |
Which of the following category is most general with its members lest resembling with each other than the other categries_____________? |
| A. | Species |
| B. | Genus |
| C. | Family |
| D. | Order |
| Answer» E. | |
| 198. |
Which of the following carbohydrate is tasteless___________? |
| A. | Monosaccharide |
| B. | Oligosaccharide |
| C. | Polysaccharide |
| D. | None of these |
| Answer» D. None of these | |
| 199. |
Which of the following carbohydrate can not be hydrolysed__________________? |
| A. | Monosaccharide |
| B. | Oligosaccharide |
| C. | Polysaccharide |
| D. | None of these |
| Answer» B. Oligosaccharide | |
| 200. |
Which of the following bones are present in pectoral girdle? |
| A. | Clavicle |
| B. | Scapula |
| C. | Both of these |
| D. | None of these |
| Answer» D. None of these | |