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.
| 251. |
The principle pathway of |
| A. | Sieve cell |
| B. | Sieve tube elements |
| C. | Xylem vessel system |
| D. | Xylem and phloem |
| Answer» D. Xylem and phloem | |
| 252. |
Chemicals having |
| A. | Enzyems |
| B. | Phyto hormones |
| C. | Catalytic agents |
| D. | Manure |
| Answer» C. Catalytic agents | |
| 253. |
process |
| A. | Carboghdrolysis |
| B. | Metabolic synthesis |
| C. | Photsynthesis |
| D. | Photosyntization |
| Answer» D. Photosyntization | |
| 254. |
Auxin |
| A. | Growth catylser |
| B. | Growth destroyer |
| C. | Growth hormone |
| D. | Growth inhibitor |
| Answer» D. Growth inhibitor | |
| 255. |
Leaf fall |
| A. | Abcisic acid |
| B. | Auxins |
| C. | Florigen |
| D. | Cyfokinins |
| Answer» E. | |
| 256. |
Different |
| A. | Auxins |
| B. | Sugar |
| C. | Enzymes |
| D. | Kinins |
| Answer» D. Kinins | |
| 257. |
Growth in plant |
| A. | Whole life |
| B. | For definite period |
| C. | Growth does hot takes place in plant |
| D. | None of these |
| Answer» B. For definite period | |
| 258. |
Pyruvic acid |
| A. | Calvin cycle |
| B. | Glycolysis |
| C. | Kreb cycle |
| D. | Pentose |
| Answer» C. Kreb cycle | |
| 259. |
In plant |
| A. | Photosynthesis |
| B. | Transpiration |
| C. | Respiration |
| D. | Water absorption |
| Answer» D. Water absorption | |
| 260. |
Two main |
| A. | Transpiration and Respiration |
| B. | Respiration and digestion |
| C. | Photosynthesis and respiration |
| D. | Photosynthesis and transpiration |
| Answer» E. | |
| 261. |
Maximum transpiration |
| A. | Algal cells |
| B. | Xerophytic plants |
| C. | Hydrophytic plants |
| D. | Mesophytic plants |
| Answer» E. | |
| 262. |
Growth movement |
| A. | Geotropism |
| B. | Phototropism |
| C. | Hydrotropism |
| D. | Thigmotropism |
| Answer» C. Hydrotropism | |
| 263. |
Leaves |
| A. | Absorb green light |
| B. | Do not absorb but reflect green light |
| C. | Utilise green light |
| D. | Absorb and reflect green light |
| Answer» C. Utilise green light | |
| 264. |
Condition in which rate of transpiration increases is |
| A. | Low velocity of wind |
| B. | Low humidity and high temperature |
| C. | High humidity |
| D. | Excess amount of water in soil |
| Answer» C. High humidity | |
| 265. |
Fermentation |
| A. | Anearobic respiration |
| B. | Incomplete oxidation of carbohydrate |
| C. | Complete oxidation of carbohydrate |
| D. | None of these |
| Answer» C. Complete oxidation of carbohydrate | |
| 266. |
If the stem grows toward |
| A. | negative phototrophic movement |
| B. | Phototrophic movement |
| C. | Positive phototrophic movement |
| D. | None of these |
| Answer» D. None of these | |
| 267. |
First step of photosynthesis |
| A. | Activation of chlorophyll by sunlight |
| B. | Oxygen comes out from water |
| C. | Formation of carbohydrate |
| D. | Fixation of carbon dioxide |
| Answer» B. Oxygen comes out from water | |
| 268. |
The leaves of |
| A. | Plant have nervous system |
| B. | The leaf are very tender |
| C. | The leaf tissue are injured |
| D. | The turgor pressure of leaf base changes |
| Answer» E. | |
| 269. |
Fruit ripening |
| A. | Warm surroundings |
| B. | Increased nitrogen supply |
| C. | Reduced water supply |
| D. | Ethylene rich atmosphere |
| Answer» E. | |