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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.
| 4151. |
Osmophilic granules are present in |
| A. | Plasma membrane |
| B. | Cytoplasm |
| C. | Chloroplast |
| D. | Ribosomes |
| Answer» D. Ribosomes | |
| 4152. |
The first event in photosynthesis is [CPMT 1975, 80, 81, 84; AFMC 1984, 86, 88; JIPMER 1987, 2002] |
| A. | Synthesis of ATP |
| B. | Photoexcitation of chlorophyll and ejection of electron |
| C. | Photolysis of water |
| D. | Release of oxygen |
| Answer» C. Photolysis of water | |
| 4153. |
Quantasome are present in [Haryana PMT 2005] |
| A. | Stroma |
| B. | Grana |
| C. | Mitochondria |
| D. | Golgi body |
| Answer» C. Mitochondria | |
| 4154. |
Photosynthetically least efficient radiation is [Manipal 2005] |
| A. | Blue |
| B. | Yellow |
| C. | Green |
| D. | Red |
| Answer» D. Red | |
| 4155. |
Suspension of isolated thylakoids in culture medium containing \[C{{O}_{2}}\] and \[{{H}_{2}}O\] does not produce hexose due to absence of which of the following [DPMT 2004] |
| A. | ATP |
| B. | Enzyme |
| C. | Proteins |
| D. | Hill reagent |
| Answer» C. Proteins | |
| 4156. |
In photosynthesis, plants [CPMT 1988; AFMC 2003; MP PMT 2004] |
| A. | Absorb \[{{O}_{2}}\] and release \[C{{O}_{2}}\] |
| B. | Absorb \[C{{O}_{2}}\]and release \[{{O}_{2}}\] |
| C. | Absorb \[N{{H}_{3}}\]and release \[{{N}_{2}}\] |
| D. | Absorb \[{{N}_{2}}\] and release \[N{{H}_{3}}\] |
| Answer» B. Absorb \[C{{O}_{2}}\]and release \[{{O}_{2}}\] | |
| 4157. |
Emerson effect explain the phenomenon of [Kerala CET 2003; KCET 2003] |
| A. | Transpiration |
| B. | Absorption of water by roots |
| C. | Photosynthesis |
| D. | Respiration |
| Answer» D. Respiration | |
| 4158. |
Match the sites in column I with the processes in column II and choose the correct combination from the options Column I Column II A. Grana of chloroplast 1. Kreb's cycle B. Stroma of chloroplast 2. Light reaction C. Cytoplasm 3. Dark reaction D. Mitochondrial matrix 4. Glycolysis [Kerala PMT 2004] |
| A. | A-4, B-3, C-2, D-1 |
| B. | A-1, B-2, C-4, D-3 |
| C. | A-2, B-1, C-3, D-4 |
| D. | A-3, B-4, C-1, D-2 |
| E. | A-2, B-3, C-4, D-1 |
| Answer» F. | |
| 4159. |
Dimorphic chloroplasts are present in [MHCET 2002] |
| A. | Sugar cane |
| B. | Cotton |
| C. | Pea |
| D. | Mango |
| Answer» B. Cotton | |
| 4160. |
Make suitable pair A. Emerson effect a. \[{{C}_{4}}\]cycle B. Hill reaction b. Photolysis C. Calvin's cycle c. \[{{C}_{3}}\]cycle D. Hatch and Slack cycle d. Photosystem-I and II [RPMT 1997] |
| A. | Aa, Bb, Cc, Dd |
| B. | Aa, Bc, Cd, Da |
| C. | Ac, Bd, Ca, Db |
| D. | Ad, Bb, Cc, Da |
| Answer» E. | |
| 4161. |
Solar energy is converted into ATP in [CPMT 1990] |
| A. | Mitochondria |
| B. | Chloroplasts |
| C. | Ribosomes |
| D. | Peroxisomes |
| Answer» C. Ribosomes | |
| 4162. |
The full expansion of NADP is [RPMT 1997] |
| A. | Nicotinamide adenine diphosphate |
| B. | Nicotinamide adenosine diphosphate |
| C. | Nicotinamide adenine dinucleotide phosphate |
| D. | Nicotinamide adenosine dinucleotide phosphate |
| Answer» D. Nicotinamide adenosine dinucleotide phosphate | |
| 4163. |
The use of solar cooker by man is copying of which one by the following processes |
| A. | Photosynthesis |
| B. | Respiration |
| C. | Guttation |
| D. | Photorespiration |
| Answer» B. Respiration | |
| 4164. |
The most vital process for the existence of life on earth is [KCET 1994] |
| A. | Communication in animals |
| B. | Photosynthesis by plants |
| C. | Reproduction in plants and animals |
| D. | Respiration in animals |
| Answer» C. Reproduction in plants and animals | |
| 4165. |
The gas released in photosynthesis is |
| A. | Pure\[C{{O}_{2}}\] |
| B. | Pure\[{{O}_{2}}\] |
| C. | Mainly\[C{{O}_{2}}\] |
| D. | Mainly\[{{O}_{2}}\] |
| Answer» C. Mainly\[C{{O}_{2}}\] | |
| 4166. |
The detectable end product of photosynthesis is |
| A. | Glucose |
| B. | Fructose 1, 6 diphosphate |
| C. | Ribulose phosphate |
| D. | Starch |
| Answer» E. | |
| 4167. |
Which group is not alike [EAMCET 1980] |
| A. | Enzyme and protein synthesis |
| B. | Osmosis and diffusion |
| C. | Photosynthesis and respiration |
| D. | Growth and movement |
| Answer» D. Growth and movement | |
| 4168. |
What is the common value of PQ (photosynthetic quotient) of a leaf |
| A. | > 1 |
| B. | < 1 |
| C. | One |
| D. | Zero |
| Answer» D. Zero | |
| 4169. |
A granum is made up of |
| A. | Single thylakoid |
| B. | Two thylakoids |
| C. | Many thylakoids arranged one above the other |
| D. | None of the above |
| Answer» D. None of the above | |
| 4170. |
How many molecules of water are needed by a green plant to produce one molecule of hexose/ reduce 6 molecules of CO2 |
| A. | 6 |
| B. | 12 |
| C. | 24 |
| D. | One only |
| Answer» C. 24 | |
| 4171. |
Total amount of the dry weight of photosynthate produced by all type of plants per annum is [AMU 1992] |
| A. | 1.7 million tonnes |
| B. | 17 million tonnes |
| C. | 170 million tonnes |
| D. | 1700 million tonnes |
| Answer» E. | |
| 4172. |
What is the unique process which has supported life on this planet |
| A. | \[{{N}_{2}}-\]fixation |
| B. | Photosynthesis |
| C. | Protein synthesis |
| D. | Respiration |
| Answer» C. Protein synthesis | |
| 4173. |
Aerobic atmosphere is maintained by |
| A. | Prokaryotes |
| B. | Protists |
| C. | Plants |
| D. | Fungi |
| Answer» D. Fungi | |
| 4174. |
Photosynthesis is a process in which [BHU 1995] |
| A. | \[C{{O}_{2}}\]is reduced to carbohydrate |
| B. | NADH is reduced to NAD |
| C. | ATP is generated |
| D. | Oxidative phosphorylation occurs |
| Answer» B. NADH is reduced to NAD | |
| 4175. |
Quantasomes are found in [RPMT 1995] |
| A. | Surface of cristae |
| B. | Surface of plasma membrane |
| C. | Surface of nuclear membrane |
| D. | Surface of thylakoids |
| Answer» E. | |
| 4176. |
Algae float in the water during day time and sink during night time because |
| A. | They become buoyant due to consumption of food materials in respiration |
| B. | They lose weight at night |
| C. | They come up to enjoy sunshine |
| D. | They become buoyant in light due to accumulation of oxygen bubbles released in photosynthesis |
| Answer» E. | |
| 4177. |
Importance of photosynthesis is due to |
| A. | Synthesis of food |
| B. | Purification of atmosphere |
| C. | Provided vast resources of energy |
| D. | All the above |
| Answer» E. | |
| 4178. |
Phylloclade, the modified photosynthetic organ is a |
| A. | Flattened leaf |
| B. | Flattened petiole |
| C. | Flattened stem |
| D. | None of the above |
| Answer» D. None of the above | |
| 4179. |
Intensity of light can be measured by |
| A. | Lux meter |
| B. | Wilmott's bubbler |
| C. | Ganong's potometer |
| D. | Farmer's photometer |
| Answer» B. Wilmott's bubbler | |
| 4180. |
Light energy is converted into chemical energy in the presence of [MP PMT 1994] |
| A. | Pyrenoids |
| B. | Chloroplasts |
| C. | Ribosomes |
| D. | Mesosomes |
| Answer» C. Ribosomes | |
| 4181. |
Which of the following has been used in photosynthetic researches |
| A. | Scenedesmus |
| B. | Chlorella |
| C. | Both [a] and [b] |
| D. | None of the above |
| Answer» D. None of the above | |
| 4182. |
The process of photosynthesis takes place in [CMC Vellore 1984] |
| A. | Roots only |
| B. | Shoot only |
| C. | All the cells of plant |
| D. | Chlorophyll containing cells only |
| Answer» E. | |
| 4183. |
In angiosperms, synthesis of chlorophyll occurs in presence of [CPMT 1984] |
| A. | Phytochrome |
| B. | Light |
| C. | Cytochrome |
| D. | None of the above |
| Answer» C. Cytochrome | |
| 4184. |
The ultraviolet radiations from the sun cause reactions that produce [CPMT 1982] |
| A. | Carbon monoxide |
| B. | Carbon dioxide |
| C. | Ozone |
| D. | Fluorides |
| Answer» D. Fluorides | |
| 4185. |
Which of the following is not required in the synthesis of carbohydrates [CPMT 1985] |
| A. | \[C{{O}_{2}}\] |
| B. | Chlorophyll |
| C. | Nitrogen |
| D. | Water |
| Answer» D. Water | |
| 4186. |
For the process of photosynthesis all except one of the following items are essential. Point out the exception [MP PMT 1986] |
| A. | Water, minerals |
| B. | Light, chlorophyll |
| C. | \[C{{O}_{2}}\], optimum temperature |
| D. | Oxygen, sucrose |
| Answer» E. | |
| 4187. |
Approximate amount of water on earth which split by photosynthesis once every 2 million years is |
| A. | 10 million\[k{{m}^{3}}\] |
| B. | 15 million\[k{{m}^{3}}\] |
| C. | 20 million\[k{{m}^{3}}\] |
| D. | 25 million\[k{{m}^{3}}\] |
| Answer» C. 20 million\[k{{m}^{3}}\] | |
| 4188. |
The gas absorbed during photosynthesis is [CPMT 1986] |
| A. | Oxygen |
| B. | Nitrogen |
| C. | Ammonia |
| D. | Carbon dioxide |
| Answer» E. | |
| 4189. |
\[C{{O}_{2}}\]is formed in all of the following except [BHU 1977] |
| A. | Burning of sugar |
| B. | Respiration in plants |
| C. | Photosynthesis by plants |
| D. | On heating of limestone |
| Answer» D. On heating of limestone | |
| 4190. |
Which branch of Botany is concerned with the study of photosynthesis [AMU 1990] |
| A. | Ecology |
| B. | Psycology |
| C. | Plant physiology |
| D. | Embryology |
| Answer» D. Embryology | |
| 4191. |
Besides water and light, which is more essential as a raw material for food formation [BHU 1979] |
| A. | \[{{O}_{2}}\] |
| B. | \[C{{O}_{2}}\] |
| C. | Mineral salts |
| D. | NAD |
| Answer» C. Mineral salts | |
| 4192. |
For photosynthesis (i.e. for the synthesis of organic matter), the green plants need only [AFMC 1987] |
| A. | Light |
| B. | Chlorophyll |
| C. | \[C{{O}_{2}}\]and water |
| D. | All of these |
| Answer» E. | |
| 4193. |
Quantasomes contain [CPMT 1982; MP PMT 1984] |
| A. | 200 chlorophyll molecules |
| B. | 230 chlorophyll molecules |
| C. | 250 chlorophyll molecules |
| D. | 300 chlorophyll molecules |
| Answer» C. 250 chlorophyll molecules | |
| 4194. |
Chloroplast fixes [DPMT 1987] |
| A. | \[{{O}_{2}}\] |
| B. | \[{{H}_{2}}\] |
| C. | \[C{{O}_{2}}\] |
| D. | \[{{N}_{2}}\] |
| Answer» D. \[{{N}_{2}}\] | |
| 4195. |
In photosynthesis, oxygen is liberated due to [DPMT 1983; MP PMT 1999] |
| A. | Reduction of carbon dioxide |
| B. | Hydrolysis of carbohydrate |
| C. | Photolysis of water |
| D. | Breakdown of chlorophyll |
| Answer» D. Breakdown of chlorophyll | |
| 4196. |
Leaves appear green because they [NCERT 1982] |
| A. | Reflect green light |
| B. | Absorb green light |
| C. | Both reflect and absorb green light |
| D. | None of the above |
| Answer» B. Absorb green light | |
| 4197. |
The example of sun-drassers are |
| A. | Mango |
| B. | Saraca indica |
| C. | Ferns |
| D. | Palm |
| Answer» D. Palm | |
| 4198. |
Phenomenon which converts light energy into chemical energy is [AFMC 1985, 2005] |
| A. | Respiration |
| B. | Photosynthesis |
| C. | Transpiration |
| D. | None of these |
| Answer» C. Transpiration | |
| 4199. |
Photosynthetic phosphorylation is |
| A. | Oxidative process |
| B. | Photo process |
| C. | Both [a] and [b] |
| D. | None of the above |
| Answer» C. Both [a] and [b] | |
| 4200. |
Grana refers to [BHU 1984] |
| A. | Stacks of thylakoids in plastids of higher plants |
| B. | A constant in quantum equation |
| C. | Glycolysis of glucose |
| D. | Bye product of photosynthesis |
| Answer» B. A constant in quantum equation | |