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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.
| 6451. |
Heat energy of plants is measured in [MP PMT 1996] |
| A. | Grams |
| B. | Pounds |
| C. | Decibels |
| D. | Calories |
| Answer» E. | |
| 6452. |
Leaves of annual plants obtain\[{{O}_{2}}\]through [CPMT 1985; DPMT 1977, 84] |
| A. | Cell walls |
| B. | Cuticle and leaf scars |
| C. | Stomata |
| D. | Lenticels |
| Answer» D. Lenticels | |
| 6453. |
When ATP is converted into ADP, it releases [Manipal 1995] |
| A. | Electricity |
| B. | Energy |
| C. | Enzymes |
| D. | Hormones |
| Answer» C. Enzymes | |
| 6454. |
Which of the scientific paper would you assign to plant physiology [CPMT 1985] |
| A. | Evergreen forest of India |
| B. | Embryo culture of plants |
| C. | Respiratory activities in plants |
| D. | Cell and cell division |
| Answer» D. Cell and cell division | |
| 6455. |
Which of the following leaves will show maximum rate of respiration |
| A. | Young leaves |
| B. | Mature leaves |
| C. | Senescent leaves |
| D. | None of the above |
| Answer» B. Mature leaves | |
| 6456. |
Cytochrome is related to [MP PMT 1991] |
| A. | Cellular digestion |
| B. | Protein synthesis |
| C. | Cell division |
| D. | Cellular respiration |
| Answer» E. | |
| 6457. |
Cut surfaces of fruit and vegetables often become dark because [DPMT 1983; CPMT 1983] |
| A. | Dirty knife makes it dark |
| B. | Oxidation of tannic acid in the presence of trace of iron from the knife makes it dark |
| C. | Dust of the air makes it dark |
| D. | None of the above |
| Answer» C. Dust of the air makes it dark | |
| 6458. |
Respiration differs from the process of combustion in the fact that [CPMT 1985] |
| A. | All the energy stored in glucose is released at once due to combustion |
| B. | All energy stored in glucose is gradually released due to combustion |
| C. | Comparatively large quantity of energy is produced due to combustion |
| D. | The carbohydrates act as the combustion substance |
| Answer» C. Comparatively large quantity of energy is produced due to combustion | |
| 6459. |
Respiration is a process in which [CPMT 1983] |
| A. | Energy is used up |
| B. | Energy is stored in the form of ATP |
| C. | Energy is released and stored in the form of ATP |
| D. | Energy is released at all |
| Answer» D. Energy is released at all | |
| 6460. |
If\[C{{O}_{2}}\]is given off in respiration, why does the amount of\[C{{O}_{2}}\]in the atmosphere remains relatively constant [CPMT 1987; BHU 1991] |
| A. | \[C{{O}_{2}}\]forms carbonate rocks |
| B. | \[C{{O}_{2}}\]is buffer |
| C. | \[C{{O}_{2}}\]is converted in photosynthesis to carbohydrates |
| D. | \[C{{O}_{2}}\]splits up during photosynthesis |
| Answer» D. \[C{{O}_{2}}\]splits up during photosynthesis | |
| 6461. |
During 24 hours there is a time when plants neither give\[{{O}_{2}}\]nor\[C{{O}_{2}}\]. This is the time of [BHU 1984, 91] |
| A. | Night |
| B. | Daylight |
| C. | Twilight |
| D. | None of these |
| Answer» D. None of these | |
| 6462. |
Intake of\[C{{O}_{2}}\] and outlet of \[{{O}_{2}}\]is equal in photosynthesis and respiration, then the condition is known as [CPMT 1990] |
| A. | Red drop |
| B. | Solarization |
| C. | Null point |
| D. | Compensation point |
| Answer» E. | |
| 6463. |
Aerobic respiration is more advantageous to a large organism than anaerobic respiration, because aerobic respiration [CPMT 1986] |
| A. | Does not require sunlight |
| B. | Produces oxygen as a waste product |
| C. | Does not require molecular oxygen and hydrogen |
| D. | Releases more energy from an equal amount of nutrients |
| Answer» E. | |
| 6464. |
What is the importance of respiration in plants [CPMT 1984] |
| A. | It provides oxygen to plants |
| B. | It liberates energy |
| C. | It liberates carbon dioxide |
| D. | All the above |
| Answer» C. It liberates carbon dioxide | |
| 6465. |
Which of the substrate is used in protoplasmic respiration |
| A. | Fat |
| B. | Carbohydrate |
| C. | Protein |
| D. | All the above |
| Answer» D. All the above | |
| 6466. |
Carbon dioxide liberates during [CPMT 1979] |
| A. | Ascent of sap |
| B. | Transpiration |
| C. | Photosynthesis |
| D. | Respiration |
| Answer» E. | |
| 6467. |
In the process of respiration the potential energy stored in the organic compounds is released in the form of [NCERT 1978; BHU 2001] |
| A. | Kinetic energy |
| B. | Physical energy |
| C. | Chemical energy |
| D. | Radiant energy |
| Answer» B. Physical energy | |
| 6468. |
Which of the following is the source of respiration [CPMT 1979] |
| A. | Stored food |
| B. | RNA |
| C. | DNA |
| D. | ATP |
| Answer» B. RNA | |
| 6469. |
Respiration occurs [BHU 1980; DPMT 1983] |
| A. | Only in non-green cells in light |
| B. | Only in non-green cells both in light and dark |
| C. | In all living cells both in light and dark |
| D. | In all living cells only in light |
| Answer» D. In all living cells only in light | |
| 6470. |
Aerobic respiration of glucose produces energy [MP PMT 1993] |
| A. | 637 kcal |
| B. | 640 kcal |
| C. | 673 kcal |
| D. | 693 kcal |
| Answer» D. 693 kcal | |
| 6471. |
The connecting link among glycolysis, Kreb's cycle and beta-oxidation of fatty acid is [MP PMT 1992] |
| A. | Pyruvic acid |
| B. | Acetyl CoA |
| C. | Acetaldehyde |
| D. | Citric acid |
| Answer» C. Acetaldehyde | |
| 6472. |
TPP means [CPMT 1975] |
| A. | Thiamine pyrophosphate |
| B. | Thymine pyrophosphate |
| C. | Thymine pentaphosphate |
| D. | None of the above |
| Answer» B. Thymine pyrophosphate | |
| 6473. |
The synthesis of ATP in photosynthesis and respiration is essentially an oxidation-reduction process involving removal of energy from [BHU 1994] |
| A. | Oxygen |
| B. | Phytochrome |
| C. | Cytochrome |
| D. | Electrons |
| Answer» E. | |
| 6474. |
The energy yield as a result of total oxidation of one glucose molecule during cellular respiration is to convert [CBSE PMT 1992] |
| A. | 38 molecules of ADP into 38 molecules of ATP |
| B. | 30 molecules of ADP into 30 molecules of ATP |
| C. | 36 molecules of ADP into 36 molecules of ATP |
| D. | 32 molecules of ADP into 32 molecules of ATP |
| Answer» B. 30 molecules of ADP into 30 molecules of ATP | |
| 6475. |
On which substrate enzyme lipase works |
| A. | Fat |
| B. | Protein |
| C. | Carbohydrate |
| D. | All the above |
| Answer» B. Protein | |
| 6476. |
Who among the following can be said to be the ?Father of Indian Physiology? [Bihar MDAT 1991] |
| A. | B.P. Pal |
| B. | K.C. Mehta |
| C. | M.S. Swaminathan |
| D. | J.C. Bose |
| Answer» C. M.S. Swaminathan | |
| 6477. |
Respiration is an [CPMT 1986] |
| A. | Endothermic process |
| B. | Exothermic process |
| C. | Anabolic process |
| D. | Endergonic process |
| Answer» C. Anabolic process | |
| 6478. |
Energy given by one molecule of ATP is [BHU 1986; MP PMT 1989] |
| A. | 7.3 kcal |
| B. | 721 kcal |
| C. | 760 kcal |
| D. | 1000 kcal |
| Answer» B. 721 kcal | |
| 6479. |
Instantaneous source of energy is [AFMC 1985] |
| A. | Glucose |
| B. | Fats |
| C. | Proteins |
| D. | Amino acids |
| Answer» B. Fats | |
| 6480. |
Which cell organelle is required in photorespiration [CPMT 1990; DPMT 1991; BHU 1994, 2000, 01; MP PMT 1984, 2000, 01; AIIMS 2001, 02; Kerala PMT 2002] |
| A. | Chloroplast |
| B. | Mitochondria |
| C. | Peroxisome |
| D. | All the above |
| Answer» E. | |
| 6481. |
To a living organism which of the following has the greater amount of available energy per molecule [MP PMT 1987] |
| A. | ATP |
| B. | ADP |
| C. | \[C{{O}_{2}}\] |
| D. | \[{{H}_{2}}O\] |
| Answer» B. ADP | |
| 6482. |
If carbon dioxide contents of the atmosphere is as high as 300 ppm [MP PMT 1989] |
| A. | All plants will be killed |
| B. | The plants would not grow properly |
| C. | Plants would grow for some times and then die |
| D. | The plants would thrive well |
| Answer» E. | |
| 6483. |
The net gain of energy from one gram molecule of glucose during aerobic respiration is [MP PMT 1987; CPMT 1990, 96; CBSE PMT 1999; BHU 2000; KCET 2001] |
| A. | 2 ATP |
| B. | 36 ATP |
| C. | 38 ATP |
| D. | 15 ATP |
| Answer» D. 15 ATP | |
| 6484. |
Evolution of\[C{{O}_{2}}\]is more than intake of oxygen when [MP PMT 1987; DPMT 1990] |
| A. | Sucrose is respired |
| B. | Glucose is respired |
| C. | Organic acids are respired |
| D. | Fats are respired |
| Answer» D. Fats are respired | |
| 6485. |
Respiration is a |
| A. | Photochemical oxidation |
| B. | Oxidation reaction |
| C. | Photophosphorylation |
| D. | None of the above |
| Answer» C. Photophosphorylation | |
| 6486. |
Common immediate source of energy in cellular activity or Energy currency of the cell is [DPMT 1983; AFMC 1982; BHU 1982, 84; CPMT 1978, 89, 94; JIPMER 1990; MP PMT 2002] |
| A. | DNA |
| B. | ATP |
| C. | RNA |
| D. | NAD |
| Answer» C. RNA | |
| 6487. |
Energy obtained by cell from catabolism is stored immediately in the form of [CPMT 1984] |
| A. | ATP |
| B. | DNA |
| C. | Glucose |
| D. | Pyruvic acid |
| Answer» B. DNA | |
| 6488. |
The end products of respiration in plants are [AFMC 1976; CPMT 1972] |
| A. | \[C{{O}_{2}},\,\,{{H}_{2}}O\]and energy |
| B. | Starch and\[{{O}_{2}}\] |
| C. | Sugar and\[{{O}_{2}}\] |
| D. | \[{{H}_{2}}O\]and energy |
| Answer» B. Starch and\[{{O}_{2}}\] | |
| 6489. |
After respiration, the conversion of energy is mainly in the form of [AFMC 1976; CPMT 1979] |
| A. | ADP |
| B. | ATP |
| C. | AMP |
| D. | Glucose |
| Answer» C. AMP | |
| 6490. |
Both respiration and photosynthesis require the following [CPMT 1981, 84, 88, 89; DPMT 1990; MP PMT 1984, 89, 93, 2003] |
| A. | Sunlight |
| B. | Chlorophyll |
| C. | Glucose |
| D. | Cytochrome |
| Answer» E. | |
| 6491. |
If a starved plant is provided with glucose, the rate of respiration would |
| A. | Decrease |
| B. | Increase |
| C. | Become constant |
| D. | First rise and then fall |
| Answer» C. Become constant | |
| 6492. |
Oxidative phosphorylation is related to the formation of |
| A. | ATP by chloroplast via photosynthesis |
| B. | ATP by chondriosome via photolysis |
| C. | ATP by cytoplasm via glycolysis |
| D. | ATP by chondriosome via respiration |
| Answer» E. | |
| 6493. |
Which of the following process is immediately affected by the loss of ATP |
| A. | Diffusion |
| B. | Osmosis |
| C. | Uptake |
| D. | Kreb's cycle |
| Answer» D. Kreb's cycle | |
| 6494. |
In a mango tree, metabolic energy is most extensively used in |
| A. | Cambium |
| B. | Crok |
| C. | Xylem |
| D. | Root parenchyma |
| Answer» B. Crok | |
| 6495. |
\[{{C}_{2}}\]cycle is studied in |
| A. | \[{{C}_{4}}\]plants |
| B. | Those showing photorespiration |
| C. | Both [a] and [b] |
| D. | None of the above |
| Answer» C. Both [a] and [b] | |
| 6496. |
When 100% carbon is oxidized to\[C{{O}_{2}}\], the efficiency of such a respiration is |
| A. | 40% |
| B. | 0.6 |
| C. | 90% |
| D. | 1 |
| Answer» B. 0.6 | |
| 6497. |
Protein is used as respiratory substrate only when |
| A. | Carbohydrates are absent |
| B. | Fats are absent |
| C. | Both exhausted |
| D. | Fats and carbohydrates are abundant |
| Answer» D. Fats and carbohydrates are abundant | |
| 6498. |
Compensation point is developed in |
| A. | Day light |
| B. | Twilight |
| C. | Night time |
| D. | Noon hours |
| Answer» C. Night time | |
| 6499. |
Respiratory exchange in seeds occur through |
| A. | Testa |
| B. | Stomata |
| C. | Micropyle |
| D. | Hilum |
| Answer» D. Hilum | |
| 6500. |
Roots of a plant when kept in a phenolphthalein containing weak alkaline solution, decolorises it. This is due to |
| A. | Absorption of phenolphthalein |
| B. | Absorption of alkali |
| C. | Respiration of roots |
| D. | Utilization of\[{{O}_{2}}\] |
| Answer» D. Utilization of\[{{O}_{2}}\] | |