MCQOPTIONS
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MCQOPTIONS
This section includes 269 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 201. |
In plant body, the |
| A. | Bast |
| B. | Collenchyma |
| C. | Parenchyma |
| D. | Xylum |
| Answer» E. | |
| 202. |
Plant cell kept in |
| A. | Lysed |
| B. | Turgir |
| C. | Deplasmolysed |
| D. | Plasmolysed |
| Answer» E. | |
| 203. |
Hydrophonics |
| A. | Laboratory |
| B. | Phytotron |
| C. | Liquid culture medium |
| D. | Solid culture medium |
| Answer» D. Solid culture medium | |
| 204. |
Auxin suppresses |
| A. | Lateral axillary buds |
| B. | Apical buds |
| C. | Roots on stem cuttings |
| D. | Parthenocarpy |
| Answer» B. Apical buds | |
| 205. |
Which one yields the |
| A. | krebs cycle |
| B. | Anaerobic respiration |
| C. | Glycolysis |
| D. | Aerobic respiration |
| Answer» E. | |
| 206. |
Ethylene |
| A. | A gaseous metabolites |
| B. | A gaseous enzyme |
| C. | A gaseous hormone |
| D. | A solid hormone |
| Answer» D. A solid hormone | |
| 207. |
Gibberellins |
| A. | Algae |
| B. | Fungi |
| C. | Bacteria |
| D. | Virus |
| Answer» C. Bacteria | |
| 208. |
Dwarfness |
| A. | Cytokinin |
| B. | Gibberellic acid |
| C. | Auxin |
| D. | Antigibberellin |
| Answer» C. Auxin | |
| 209. |
The specific function of |
| A. | Active chlorophyll |
| B. | Split water |
| C. | Reduce carbon dioxide |
| D. | Synthesizes glucose |
| Answer» B. Split water | |
| 210. |
Indole acetic acid |
| A. | Enzyme |
| B. | Fungicides |
| C. | Amino acid |
| D. | Auxin |
| Answer» E. | |
| 211. |
Exchange of substances |
| A. | Active transport |
| B. | Osmosis |
| C. | Diffusion |
| D. | All of the above |
| Answer» E. | |
| 212. |
Prolonged water |
| A. | Stoppage of root respiration |
| B. | Dilution of soil nutrients |
| C. | Dilution of plant cell sap |
| D. | Leaching of nutrient |
| Answer» B. Dilution of soil nutrients | |
| 213. |
Food is |
| A. | Bacterial attack is minimised |
| B. | For easy cooking |
| C. | For easy digestion |
| D. | All the above |
| Answer» B. For easy cooking | |
| 214. |
Leaf of Mimosa droops |
| A. | Water loss from leaflet base |
| B. | Change in water concentration |
| C. | Loss of water from cell to intercellular space in paulvinus and pulvinules |
| D. | All of above |
| Answer» D. All of above | |
| 215. |
Food products |
| A. | Make them tasty |
| B. | Use in off season |
| C. | maintenance of freshness, longevity and teste due |
| D. | Keep them cool |
| Answer» D. Keep them cool | |
| 216. |
Growth rate |
| A. | Sigmoid curve |
| B. | Respiration curve |
| C. | Excretion curve |
| D. | Osmotic curve |
| Answer» B. Respiration curve | |
| 217. |
Root hair absorb |
| A. | Osmotic concentration is same in the two |
| B. | Solute concentration is higher in soil solution |
| C. | Solute concentration is higher in root hair |
| D. | Absorpton is active |
| Answer» D. Absorpton is active | |
| 218. |
Osmosis |
| A. | Flow of solvent (water) through a semipermeable Membrane from less concentrated solution to more concentrated solution |
| B. | Flow of solute from a semipermeable membrane |
| C. | Flow of water without a membrane |
| D. | None of the above |
| Answer» B. Flow of solute from a semipermeable membrane | |
| 219. |
Transpiration |
| A. | Rate of water loss |
| B. | Transpiration is a physiological process while evaporation is physical process |
| C. | Transpiration is physical process while evaporation is a physiological process |
| D. | Frequency of water loss |
| Answer» C. Transpiration is physical process while evaporation is a physiological process | |
| 220. |
Root hairs absorb |
| A. | They respire rapidly |
| B. | Soil solution is isotonic |
| C. | Salt concentration of cell sap is high |
| D. | Salt concentration of soil is high |
| Answer» D. Salt concentration of soil is high | |
| 221. |
Which of the following statements is/are correct regarding |
| A. | It inhibits the following of leaf |
| B. | It destroy weeds |
| C. | It permote apical grouth |
| D. | All of above |
| Answer» E. | |
| 222. |
Which one of the following statements is/are correct about |
| A. | It is a organic compound which control the growth of plant |
| B. | It is a special kind of organic compound found in small amount which control metabolic activity and growth of plant |
| C. | It is different concentration have different effect on different organ |
| D. | All of these |
| Answer» E. | |
| 223. |
Respiration |
| A. | Catabolic process that uses carbon dioxide, produce oxygen and converted released energy to ATP |
| B. | Anabolic process that uses oxygen, and carbon dioxide, to from ATP |
| C. | Anabolic process that uses oxygen, produces carbon dioxide and converts released energy int ATP |
| D. | Catabolic process that uses oxygen, reduces carbon dioxide and releases energy is the form ATP |
| Answer» E. | |
| 224. |
A cell placed in |
| A. | Cytoplasm will decompose |
| B. | Mineral salt will break the cell wall |
| C. | Salt water enters the cell |
| D. | Water comes out from cell by exosmosis |
| Answer» E. | |
| 225. |
Osmosis |
| A. | Diffusion of suspended particle from higher to lower concentration |
| B. | Diffusion of suspended particle from lower to higher concentration |
| C. | Diffusion of water from more to less concentrated side |
| D. | Diffusion of water from less to more concentrated side |
| Answer» E. | |
| 226. |
Chlorophyll |
| A. | On the surface of chloroplast |
| B. | Dispersed throughout chloroplast |
| C. | In the stroma of chloroplast |
| D. | In the grana of chloroplast |
| Answer» E. | |
| 227. |
Consider the following plants |
| A. | 1 and 2 |
| B. | 2, 3 and 4 |
| C. | 1, 3 and 4 |
| D. | 1, 2, 3 and 4 |
| Answer» D. 1, 2, 3 and 4 | |
| 228. |
Assertion (A) : Cellulose |
| A. | Both A and R are true and R is the correct |
| B. | Both A and R are true but R is not a 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 R are true but R is not a correct explanation of A | |
| 229. |
Most of |
| A. | Blue and red region of light |
| B. | In the green and yellow region of light |
| C. | In the blue and orange region of light |
| D. | In the violet and orange region of light |
| Answer» B. In the green and yellow region of light | |
| 230. |
Mitochondria |
| A. | Glycogen |
| B. | Glucose |
| C. | ATP |
| D. | Fats |
| Answer» D. Fats | |
| 231. |
Resins placed in |
| A. | Plasmolysis |
| B. | Adsorption |
| C. | Diffusion |
| D. | Endosmosis |
| Answer» E. | |
| 232. |
Krebs cycle |
| A. | Aerobic |
| B. | Anaerobic |
| C. | Anabolic |
| D. | None of the above |
| Answer» B. Anaerobic | |
| 233. |
An instrument for measuring the |
| A. | Porometer |
| B. | Hygroment |
| C. | Potometer |
| D. | Psychrometer |
| Answer» D. Psychrometer | |
| 234. |
Absorption of water |
| A. | Root cap |
| B. | Cell elongation |
| C. | Root hairs |
| D. | Cell division |
| Answer» D. Cell division | |
| 235. |
Seeds swell |
| A. | Diffusion |
| B. | Osmosis |
| C. | Imbibition |
| D. | Plasmolysis |
| Answer» D. Plasmolysis | |
| 236. |
Thigmotropism |
| A. | Lamina |
| B. | Tendrils |
| C. | Root apex |
| D. | Thorn |
| Answer» C. Root apex | |
| 237. |
During rainy seasons doors made up of |
| A. | Diffusion |
| B. | Osmosis |
| C. | Imbibition |
| D. | Plasmolysis |
| Answer» D. Plasmolysis | |
| 238. |
End product of |
| A. | Sugar and oxygen |
| B. | Carbon dioxide, water and energy |
| C. | Water and energy |
| D. | Carbon dioxide and energy |
| Answer» C. Water and energy | |
| 239. |
Hormone |
| A. | IAA |
| B. | NAA |
| C. | Cytokinin / Zeatin |
| D. | Gibberellin |
| Answer» D. Gibberellin | |
| 240. |
Movement in plant induced by |
| A. | Tactic movement |
| B. | Nastic movement |
| C. | Autonomic movement |
| D. | Paratonic movement |
| Answer» E. | |
| 241. |
Movements of leaves of the sensitive plant |
| A. | Thermonnasty |
| B. | Seismonasly |
| C. | Photonasty |
| D. | Nyctynasty |
| Answer» C. Photonasty | |
| 242. |
For the growth in lenght of plant which of the following is not essential |
| A. | Sodium |
| B. | Calcium |
| C. | Nitrogen |
| D. | Phosphorus |
| Answer» B. Calcium | |
| 243. |
Parthenocarpy fruit |
| A. | Zeafin |
| B. | ABA |
| C. | Auxins |
| D. | Kinetin |
| Answer» D. Kinetin | |
| 244. |
Indol acetic acid |
| A. | Enzyme |
| B. | Fungicide |
| C. | Amino acid |
| D. | Auxin |
| Answer» E. | |
| 245. |
Highest concentration |
| A. | In growing tips |
| B. | In leaves |
| C. | At the base of plant organs |
| D. | In xylem and phloem |
| Answer» B. In leaves | |
| 246. |
Gibberellin |
| A. | Yellowing of leaves |
| B. | Promotion of rooting |
| C. | Elongation of genetically dwarf plants |
| D. | Dwarfing of genetically tall plants |
| Answer» D. Dwarfing of genetically tall plants | |
| 247. |
Naturally accurring |
| A. | IAA |
| B. | Ethyle |
| C. | 2, 4-D |
| D. | Benzal dehyole |
| Answer» B. Ethyle | |
| 248. |
Translocation of food |
| A. | Sieve tube / phloen cell |
| B. | Tracheids |
| C. | Xylem vessels |
| D. | Letex duct |
| Answer» B. Tracheids | |
| 249. |
IAA |
| A. | Corn germ oil |
| B. | Gibberella |
| C. | Human urine |
| D. | Rhizopus |
| Answer» D. Rhizopus | |
| 250. |
Nastic movements |
| A. | Movement of variation |
| B. | Non directional |
| C. | Directional |
| D. | Stimulated by chemicals |
| Answer» C. Directional | |