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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.
| 6501. |
Respiratory exchange of gases in hydrophytes occur through |
| A. | Stomata |
| B. | Cuticle |
| C. | Lenticels |
| D. | General surface |
| Answer» E. | |
| 6502. |
Apple and potato obtain\[{{O}_{2}}\]through |
| A. | Stomata |
| B. | Cork |
| C. | Lenticels |
| D. | Epidermis |
| Answer» D. Epidermis | |
| 6503. |
Old trees obtain\[C{{O}_{2}}\]from |
| A. | Stomata |
| B. | Lenticels |
| C. | Leaf scars |
| D. | All the above |
| Answer» E. | |
| 6504. |
Aerobic respiration is called |
| A. | Fermentation |
| B. | Chemosynthesis |
| C. | Bio-oxidation |
| D. | Photorespiration |
| Answer» D. Photorespiration | |
| 6505. |
The energy stored in glucose basically comes from |
| A. | Air |
| B. | Water |
| C. | Sun |
| D. | Respiration |
| Answer» D. Respiration | |
| 6506. |
\[C{{O}_{2}}\] is constantly released in respiration yet its level remains fairly uniform because |
| A. | \[C{{O}_{2}}\]is used as a buffer |
| B. | \[C{{O}_{2}}\]is utilized in photosynthesis |
| C. | \[C{{O}_{2}}\]is converted into carbonate rocks |
| D. | \[C{{O}_{2}}\]undergoes regular photolysis |
| Answer» C. \[C{{O}_{2}}\]is converted into carbonate rocks | |
| 6507. |
Respiration differs from combustion in which of the following |
| A. | Energy is released in respiration |
| B. | Substance is oxidised |
| C. | Enzymes are involved |
| D. | All the above |
| Answer» D. All the above | |
| 6508. |
Which of the following is a more accurate statement about respiration |
| A. | \[{{O}_{2}}\]must always be available for respiration |
| B. | \[{{O}_{2}}\]combines with carbon to form\[C{{O}_{2}}\] |
| C. | \[{{O}_{2}}\]combines with hydrogen to form\[{{H}_{2}}O\] |
| D. | Air is inhaled and exhaled only from stomata |
| Answer» D. Air is inhaled and exhaled only from stomata | |
| 6509. |
The tissue of highest respiratory activity is |
| A. | Meristems |
| B. | Ground tissue |
| C. | Phloem |
| D. | Mechanical tissue |
| Answer» B. Ground tissue | |
| 6510. |
In aerobic respiration |
| A. | Glucose is the only substrate |
| B. | Glucose is a preferred substrate |
| C. | Glucose cannot be used directly |
| D. | Any material which burns in air can be used as substrate |
| Answer» C. Glucose cannot be used directly | |
| 6511. |
The plants similar to animals in their requirement of oxygen for cellular respiration belongs to |
| A. | Red algae |
| B. | Blue-green algae |
| C. | Fungi |
| D. | Lichens |
| Answer» D. Lichens | |
| 6512. |
Pneumatophores are responsible for a kind of respiration mainly present in |
| A. | Hydrophytes |
| B. | Mangroove plants |
| C. | Epiphytes |
| D. | Xerophytes |
| Answer» C. Epiphytes | |
| 6513. |
What is the normal value of extinction point |
| A. | \[20%{{O}_{2}}\] |
| B. | \[2%{{O}_{2}}\] |
| C. | \[10%{{O}_{2}}\] |
| D. | \[30%{{O}_{2}}\] |
| Answer» C. \[10%{{O}_{2}}\] | |
| 6514. |
Match the correct answers with type of respiration and respiratory substrates Respiration Type of substrate Floating respiration (i) Proteins Cytoplasmic respiration (ii) Starch Protoplasmic respiration (iii) Carbohydrates Lactic acid fermentation (iv) Lactose A B C D |
| A. | (iii) (ii) (i) (iv) |
| B. | (ii) (iii) (iv) (i) |
| C. | (i) (ii) (iii) (iv) |
| D. | (ii) (iv) (i) (iii) |
| Answer» B. (ii) (iii) (iv) (i) | |
| 6515. |
Match the name of scientist with his work PPP (Pentose phosphate pathway) (i) Kuhne Demonstration of fermentation (ii) Kreb's TCA cycle pathway (iii) Warburg-Dickens Glycolysis (iv) Embden Mayerh of Parnas A B C D |
| A. | (i) (ii) (iii) (iv) |
| B. | (ii) (iv) (iii) (i) |
| C. | (i) (ii) (iv) (iii) |
| D. | (iii) (i) (ii) (iv) |
| Answer» E. | |
| 6516. |
In plants, respiration takes place |
| A. | Only in leaves during night |
| B. | Only in leaves during day |
| C. | In all living cells |
| D. | None of the above |
| Answer» D. None of the above | |
| 6517. |
Match the given below organelles with their function Kreb's cycle (i) Stalked particles of mitochondria Photorespiration (ii) Cytoplasm Oxidative phosphorylation (iii) Peroxisomes Glycolysis (iv) Inner surface of membrane of mitochondria A B C D |
| A. | (ii) (iii) (iv) (i) |
| B. | (i) (ii) (iii) (iv) |
| C. | (iv) (iii) (i) (ii) |
| D. | (iii) (ii) (iv) (i) |
| Answer» D. (iii) (ii) (iv) (i) | |
| 6518. |
The process of phosphorylation takes place in |
| A. | Glycolysis |
| B. | Kreb's cycle |
| C. | HMP pathway |
| D. | All the above |
| Answer» E. | |
| 6519. |
During respiration, there is |
| A. | Loss of weight |
| B. | Gain in weight |
| C. | The weight remain constant |
| D. | Not applicable |
| Answer» B. Gain in weight | |
| 6520. |
Which of the following is reverse of photosynthesis |
| A. | Respiration |
| B. | Protein synthesis |
| C. | Fat synthesis |
| D. | All the above |
| Answer» B. Protein synthesis | |
| 6521. |
During aerobic respiration, the main thing required is |
| A. | Nitrogen |
| B. | \[{{O}_{2}}\] |
| C. | \[{{O}_{2}}\]and some microbes |
| D. | None of the above |
| Answer» C. \[{{O}_{2}}\]and some microbes | |
| 6522. |
When a man enters a seed godown, the feeling is that of |
| A. | Freshness |
| B. | Suffocation |
| C. | Freshness in the beginning and suffocation afterwards |
| D. | Suffocation in the beginning and freshness afterwards |
| Answer» C. Freshness in the beginning and suffocation afterwards | |
| 6523. |
The organelle associated with aerobic respiration is [J&K CET 2005] |
| A. | Chloroplast |
| B. | Centriole |
| C. | Nucleus |
| D. | Mitochondrion |
| Answer» E. | |
| 6524. |
Respiration initiated in chloroplasts and occurs in light is called [J&K CET 2005] |
| A. | Aerobic respiration |
| B. | Anaerobic respiration |
| C. | Photorespiration |
| D. | Fermentation |
| Answer» D. Fermentation | |
| 6525. |
Which is common in respiration and photosynthesis [Haryana PMT 2005] |
| A. | Oxidation |
| B. | Phytochrome |
| C. | Cytochrome |
| D. | Photosystem |
| Answer» D. Photosystem | |
| 6526. |
Richest energy compound in [Bihar 2005] |
| A. | Creatinine phosphate |
| B. | ATP |
| C. | Carbohydrate |
| D. | Fat |
| Answer» E. | |
| 6527. |
In both aerobic and anaerobic respiration which same product is formed |
| A. | Lactic acid |
| B. | Pyruvic acid |
| C. | Citric acid |
| D. | Organic acid |
| Answer» C. Citric acid | |
| 6528. |
Chemiosmotic theory of ATP synthests in the chloroplasts and mitochondria is based on [CBSE PMT 2005] |
| A. | Proton gradient |
| B. | Accumulation of K ions |
| C. | Accumulation of Na ions |
| D. | Membrane potential |
| Answer» B. Accumulation of K ions | |
| 6529. |
ATP stands to [MP PMT 2004, 05] |
| A. | Adenosine triphosphate |
| B. | Adenine diphosphate |
| C. | Adenosine tetraphosphate |
| D. | Adenine triphosphate |
| Answer» B. Adenine diphosphate | |
| 6530. |
A single ATP produce [MP PMT 2005] |
| A. | 8 kcal |
| B. | 10 kcal |
| C. | 12 kcal |
| D. | 100 kcal |
| Answer» D. 100 kcal | |
| 6531. |
In carbon dioxide reduction ATP is [MP PMT 2005] |
| A. | Used |
| B. | Unused |
| C. | May be used or not used |
| D. | None |
| Answer» B. Unused | |
| 6532. |
In submerged hydrophytes entry of \[C{{O}_{2}}\] is through [DPMT 2004] |
| A. | Epidermis as dissolved \[C{{O}_{2}}\] |
| B. | Epidermis as carbonates only |
| C. | Epidermis as bicarbonates only |
| D. | Both [b] and [c] |
| Answer» E. | |
| 6533. |
Which of the following is involved in the catalysis of link reaction during aerobic respiration [DPMT 2004] |
| A. | \[Vitamin\text{ }A\] |
| B. | \[Vitamin\text{ }{{B}_{1}}\] |
| C. | \[Vitamin\text{ }{{B}_{6}}\] |
| D. | \[Vitamin\text{ }K\] |
| Answer» C. \[Vitamin\text{ }{{B}_{6}}\] | |
| 6534. |
The process by which there is inhibition of aerobic respiration by atmospheric\[{{O}_{2}}\]is [DPMT 2004] |
| A. | Pasteur's effect |
| B. | Calvin's effect |
| C. | Darwin's effect |
| D. | None of these |
| Answer» B. Calvin's effect | |
| 6535. |
Ganong's respiroscope is used to demonstrate... [KCET 2004] |
| A. | Production of carbon dioxide during aerobic respiration |
| B. | Production of heat during aerobic respiration |
| C. | Evolution of oxygen during photosynthesis |
| D. | Evolution of carbon dioxide during fermentation |
| Answer» B. Production of heat during aerobic respiration | |
| 6536. |
ATP was discovered by [KCET 2004] |
| A. | Blackman |
| B. | Bowman |
| C. | Lipmann |
| D. | Karl Lohman |
| Answer» E. | |
| 6537. |
Mechanism of ATP production in aerobic respiration was given by [AFMC 2004] |
| A. | Kreb's |
| B. | Calvin |
| C. | Hatch and Slack |
| D. | Pasteur |
| Answer» E. | |
| 6538. |
Pseudomonas saccharophila shows which of the following pathway |
| A. | Glycolysis |
| B. | Kreb's cycle |
| C. | Entner-Doeudoroff pathway |
| D. | None of the above |
| Answer» D. None of the above | |
| 6539. |
Cell respiration is carried out by [Orissa JEE 2004; Pb. PMT 2004] |
| A. | Ribosome |
| B. | Mitochondria |
| C. | Chloroplast |
| D. | Golgi bodies |
| Answer» C. Chloroplast | |
| 6540. |
ATP is synthesized in which part of mitochondria [BHU 2003] |
| A. | \[{{F}_{1}}\] |
| B. | \[{{F}_{0}}\] |
| C. | Cristae |
| D. | Inner membrane of mitochondria |
| Answer» B. \[{{F}_{0}}\] | |
| 6541. |
Which of the following forms the connecting link between glycolysis and Kreb's cycle [Kerala CET 2003; Wardha 2005] |
| A. | Glucose |
| B. | Ethyl alcohol |
| C. | Lactic acid |
| D. | Pyruvic acid |
| Answer» E. | |
| 6542. |
An ATP molecule is structurally most similar to a molecule of [Kerala CET 2003] |
| A. | RNA molecule |
| B. | DNA molecule |
| C. | Amino acid |
| D. | Fatty acid |
| Answer» B. DNA molecule | |
| 6543. |
Degradation of sugar and fat to Acetyl CoA will not take place if the following organelle is not present in a eukaryotic cell [AIEEE 2003] |
| A. | Golgi apparatus |
| B. | Mitochondrion |
| C. | Ribosome |
| D. | Nucleus |
| Answer» C. Ribosome | |
| 6544. |
Salt respiration is also called as [J&K CET 2002] |
| A. | Anion respiration |
| B. | Cation respiration |
| C. | Photorespiration |
| D. | None of the above |
| Answer» B. Cation respiration | |
| 6545. |
The aerobic respiration yields [MHCET 2002] |
| A. | \[8NAD{{H}_{2}},\text{ }2FAD{{H}_{2}},\text{ }2ATP\] |
| B. | \[10NAD{{H}_{2}},\text{ }2FAD{{H}_{2}},\text{ }38ATP\] |
| C. | \[12NAD{{H}_{2}},\text{ }30ATP,\text{ }{{H}_{2}}O\] |
| D. | \[10NAD{{H}_{2}},\text{ }2FAD{{H}_{2}},\text{ }2GTP,\text{ }2ATP\] |
| Answer» E. | |
| 6546. |
Chemiosmotic mechanism of ATP synthesis was proposed by [MHCET 2001] |
| A. | Warberg |
| B. | Dickens |
| C. | Kreb's |
| D. | P. Mitchell |
| Answer» E. | |
| 6547. |
The high-energy bonds of ATP are between [AIIMS 2001] |
| A. | C-C |
| B. | C-O |
| C. | C-N |
| D. | O-P |
| Answer» E. | |
| 6548. |
Energy accumulate in ATP in [CPMT 1982] |
| A. | Disulphide bond |
| B. | Hydrogen bonds |
| C. | High energy phosphate bond |
| D. | Ester bond |
| Answer» D. Ester bond | |
| 6549. |
Monocot root differs from dicot root in having [DPMT 1978] |
| A. | Open vascular bundles |
| B. | Scattered vascular bundles |
| C. | Well-developed pith |
| D. | Radially arranged vascular bundles |
| Answer» D. Radially arranged vascular bundles | |
| 6550. |
The correct situation of mesophyll in isobilateral grass leaf is shown by [CPMT 1990] |
| A. | Palisade towards adaxial surface |
| B. | Palisade towards abaxial surface |
| C. | Undifferentiated mesophyll |
| D. | Palisade along both the surface |
| Answer» D. Palisade along both the surface | |