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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.
| 6901. |
Between the ages of 1 and 2 years, a baby boy's weight increases from 10 to 12 kg and in the same period of time the weight of a teenage boy goes up from 50 to 55 kg. The percentage growth rate of [MP PMT 1994] |
| A. | The teenager is higher than that of the baby boy by 5 to 5.5% |
| B. | The baby boy is higher than that of the teenager |
| C. | The teenager is same as that of the baby boy |
| D. | [a] and [b] both |
| Answer» C. The teenager is same as that of the baby boy | |
| 6902. |
Where would you look for active cell division in plant [MP PMT 1986] |
| A. | In the pith cells |
| B. | In the cells of cortex |
| C. | In the internodal region |
| D. | At the tip of root and shoot |
| Answer» E. | |
| 6903. |
To remove seed dormancy by mechanical removing of seed coat is called [DPMT 2003] |
| A. | Stratification |
| B. | Scarification |
| C. | Vernalization |
| D. | Photoperiodism |
| Answer» C. Vernalization | |
| 6904. |
Highest growth found in [Pb. PMT 1999; RPMT 1999] |
| A. | Static phase |
| B. | Exponential phase |
| C. | Descending phase |
| D. | Lag phase |
| Answer» C. Descending phase | |
| 6905. |
The growth in plants is [MP PMT 1999] |
| A. | Limited |
| B. | Unlimited |
| C. | Unlocalised |
| D. | None of these |
| Answer» C. Unlocalised | |
| 6906. |
Growth is maximum in the zone of [AFMC 1994] |
| A. | Cell division |
| B. | Cell elongation |
| C. | Cell maturation |
| D. | All of these |
| Answer» C. Cell maturation | |
| 6907. |
Which one of these is body building material [MP PMT 1994] |
| A. | Protein |
| B. | Sugar |
| C. | Mineral salts |
| D. | Fat |
| Answer» B. Sugar | |
| 6908. |
The growth involves [MP PMT 1988] |
| A. | Cell division |
| B. | Cell enlargement |
| C. | Cell maturation |
| D. | All the above |
| Answer» E. | |
| 6909. |
Which of the following remains unchanged at the end of growth |
| A. | Hormones |
| B. | Enzymes |
| C. | Vitamins |
| D. | Nucleotides |
| Answer» C. Vitamins | |
| 6910. |
The excess amount of\[C{{O}_{2}}\] |
| A. | Retards growth |
| B. | Accelerates growth |
| C. | Affects the growth slowly |
| D. | Does not affect growth |
| Answer» C. Affects the growth slowly | |
| 6911. |
Low C/N ratio favours |
| A. | Flowering |
| B. | Vigorous vegetative growth |
| C. | Senescence |
| D. | More flowering and poor vegetative growth |
| Answer» C. Senescence | |
| 6912. |
The plants are killed in water by frost due to |
| A. | Dessication and mechanical damage |
| B. | Stop of photosynthesis |
| C. | Stop of respiration |
| D. | Stop of transpiration |
| Answer» B. Stop of photosynthesis | |
| 6913. |
When tropical plants are shifted to temperate climate, they do not grow. This is due to |
| A. | Dessication |
| B. | Freezing injury |
| C. | Chilling injury |
| D. | Poor illumination |
| Answer» D. Poor illumination | |
| 6914. |
Most dominant direct factor which influences the growth of plants is |
| A. | Light |
| B. | Temperature |
| C. | Soil |
| D. | Wind |
| Answer» C. Soil | |
| 6915. |
Seeds of parasitic plants like Orobanche germinate in the presence of |
| A. | Auxin produced by the roots of the host |
| B. | \[G{{A}_{3}}\]produced by the roots of the parasite |
| C. | Exudates of the host plant |
| D. | Exudates of the parasite |
| Answer» D. Exudates of the parasite | |
| 6916. |
Energy for the early growth of a developing bean embryo comes from |
| A. | Sunlight |
| B. | Water in the soil |
| C. | Food in the soil |
| D. | Leaves in the seed |
| Answer» E. | |
| 6917. |
Deeply sown seeds do not germinate and do not come up over due to the deficiency of |
| A. | Light |
| B. | Water |
| C. | Oxygen |
| D. | Nutrients |
| Answer» D. Nutrients | |
| 6918. |
T-cells are found in |
| A. | Thymus |
| B. | Thyroid |
| C. | Pulmones |
| D. | Kidneys |
| Answer» B. Thyroid | |
| 6919. |
Evergreen trees remain green throughout the year on account of [AFMC 1981; JIPMER 1984; MP PMT 1988] |
| A. | Absence of leaf fall |
| B. | Leaves falling in small numbers at intervals |
| C. | Supply of the moisture throughout the year |
| D. | Cold climate |
| Answer» C. Supply of the moisture throughout the year | |
| 6920. |
Which of the following seeds would germinate |
| A. | Mature seeds over wet cotton |
| B. | Soaked seeds over dry cotton |
| C. | Dry seeds over dry cotton |
| D. | Seeds soaked in 5% picric acid |
| Answer» B. Soaked seeds over dry cotton | |
| 6921. |
Which of the following plays a prominent role in leaf growth |
| A. | Carbonate |
| B. | Nitrate |
| C. | Sulphate |
| D. | Phosphate |
| Answer» C. Sulphate | |
| 6922. |
The sequence of steps in the history of an organism is called |
| A. | Growth |
| B. | Development |
| C. | Differentiation |
| D. | Life history |
| Answer» C. Differentiation | |
| 6923. |
In an experiment freshly hatched larvae of an insect (Khapra beetle) were reared on a basal diet without increasing amounts of cholesterol. Results obtained are shown in the graph given in the table [AIIMS 2005] |
| A. | Cholesterol is an essential dietary requirement of khapra beetle |
| B. | Growth of khapra beetle is directly proportional to cholesterol concentration. |
| C. | Cholesterol concentration of \[2\,\mu g/g\] diet is the optimum level |
| D. | Growth of khapra beetle is inhibited when cholesterol concentration exceeds \[5\,\mu g/g\] diet. |
| Answer» B. Growth of khapra beetle is directly proportional to cholesterol concentration. | |
| 6924. |
Pennatal growth in higher vertebrate is [AMU 2005] |
| A. | Auxetic |
| B. | Accretionary |
| C. | Multipilicative |
| D. | None of these |
| Answer» E. | |
| 6925. |
In vascular plants, light promotes [EAMCET 1984] |
| A. | Growth |
| B. | Development |
| C. | Differentiation |
| D. | De-differentiation |
| Answer» D. De-differentiation | |
| 6926. |
Damage to thymus in a child may lead to [CBSE PMT 2005] |
| A. | A reduction in haemoglobin content of blood |
| B. | A reduction in stem cell production |
| C. | Loss of antibody mediated immunity |
| D. | Loss cell mediated immunity |
| Answer» E. | |
| 6927. |
Most important division for the growth of a plant is |
| A. | Mitosis |
| B. | Meiosis |
| C. | Amitosis and fission |
| D. | All the above |
| Answer» B. Meiosis | |
| 6928. |
Growth is an irreversible process seen at all organizational levels. It consists of [MP PMT 2002] |
| A. | Organ growth |
| B. | Subcellular growth |
| C. | Cell growth |
| D. | All of them |
| Answer» E. | |
| 6929. |
Which of the following instrument can be used to record plant growth by seconds i.e. in fraction of a minute [RPMT 1991] |
| A. | Arc auxanometer |
| B. | Arc indicator |
| C. | Space marker disc |
| D. | Crescograph |
| Answer» E. | |
| 6930. |
At cellular level, GH affects growth by controlling the production of [MP PMT 1997] |
| A. | rRNA |
| B. | tRNA |
| C. | mRNA |
| D. | None of the above |
| Answer» D. None of the above | |
| 6931. |
In a vascular plant, the exponential phase represents the phase of |
| A. | Cell division |
| B. | Cell elongation |
| C. | Cell maturation |
| D. | Cell differentiation |
| Answer» C. Cell maturation | |
| 6932. |
When volume of body increases due to increase in the volume of cells, not in the number of cells, then it is called ?auxetic growth'. Such growth is found in [MP PMT 1996] |
| A. | Lizards |
| B. | Men |
| C. | Frogs |
| D. | Nematodes |
| Answer» E. | |
| 6933. |
After achieving its maximum, the growth decreases slowly during the phase of |
| A. | Cell maturation |
| B. | Cell division |
| C. | Cell differentiation |
| D. | Cell enlargement |
| Answer» B. Cell division | |
| 6934. |
Growth curve indicates |
| A. | Growth rate |
| B. | A growth parameter at various intervals |
| C. | Absolute growth |
| D. | Absolute increase |
| Answer» C. Absolute growth | |
| 6935. |
Which two factors primarily affect the developmental phase of growth of plants [MP PMT 1989] |
| A. | Light and temperature |
| B. | Rainfall and temperature |
| C. | Light and wind |
| D. | Temperature and relative humidity |
| Answer» B. Rainfall and temperature | |
| 6936. |
During regeneration, in destructive metabolism respiratory quotient (R.Q.) in the tissue |
| A. | Increases |
| B. | Decreases |
| C. | Remains same |
| D. | First increases then decreases |
| Answer» C. Remains same | |
| 6937. |
The S-shaped growth curve and 'grand period of growth' may change with |
| A. | Sudden fluctuation in light intensity |
| B. | Change in temperature |
| C. | Fluctuation in humidity |
| D. | It remains unaffected |
| Answer» E. | |
| 6938. |
If one kidney of a man is lost, the other kidney enlarges to take over the function of the missing kidney and is called |
| A. | Restorative regeneration |
| B. | Reparative regeneration |
| C. | Autotomy |
| D. | Compensatory hypertrophy |
| Answer» E. | |
| 6939. |
The usual shape of growth curve is [MP PMT 1998] |
| A. | Linear |
| B. | Inverted bell-shaped |
| C. | Sigmoidal |
| D. | Zig-zag |
| Answer» D. Zig-zag | |
| 6940. |
Juvenile stage extends from |
| A. | Birth to 10 months of age |
| B. | 10 months to 4 or 5 years of age |
| C. | 4 or 5 years to about 14 years of age |
| D. | 14 years to 20 or 22 years of age |
| Answer» D. 14 years to 20 or 22 years of age | |
| 6941. |
Growth abnormalities such as gigantism and dwarfism are due to |
| A. | Hormonal factors |
| B. | Genetic factors |
| C. | Deficiency of food |
| D. | [a] and [b] both |
| Answer» E. | |
| 6942. |
Which of the following is the primary motive force responsible for growth |
| A. | Root pressure |
| B. | Turgor pressue |
| C. | Osmotic pressure |
| D. | DPD |
| Answer» C. Osmotic pressure | |
| 6943. |
Thymosine hormone secreted from the thymus gland |
| A. | In the early stages it enhances in later stages it decreases growth |
| B. | Enhances growth |
| C. | Decreases growth |
| D. | Does not show any effect |
| Answer» C. Decreases growth | |
| 6944. |
How growth takes place in an organism |
| A. | By change of size |
| B. | By chemical reaction in cell |
| C. | By biochemical conversion of food into living matter |
| D. | By multiplication of cells or tissues |
| Answer» D. By multiplication of cells or tissues | |
| 6945. |
Growth curve of higher animals is |
| A. | J-shaped |
| B. | R-shaped |
| C. | I-shaped |
| D. | S-shaped |
| Answer» E. | |
| 6946. |
Growth is defined as a change which is |
| A. | Reversible at constant pH |
| B. | Irreversible at constant pH |
| C. | Reversible at constant turgidity |
| D. | Irreversible at constant turgidity |
| Answer» E. | |
| 6947. |
The turnover time for intestinal cells is |
| A. | 1-2 days |
| B. | 2- 3 days |
| C. | 3-5 days |
| D. | 1- 2 weeks |
| Answer» C. 3-5 days | |
| 6948. |
The correct sequence of cellular growth stages is |
| A. | Division ® differentiation ® elongation |
| B. | Division ® elongation ® differentiation |
| C. | Differentiation ® division ® elongation |
| D. | Elongation ® differentiation ® division |
| Answer» C. Differentiation ® division ® elongation | |
| 6949. |
Replacement of cells of skin takes place in |
| A. | 1-2 days |
| B. | 2- 8 days |
| C. | 1- 2 weeks |
| D. | 2- 3 weeks |
| Answer» D. 2- 3 weeks | |
| 6950. |
Nucleoprotein ratio increases during |
| A. | Phase of wound healing |
| B. | Dedifferentiation |
| C. | Phase of blastema formation |
| D. | Phase of redifferentiation |
| Answer» C. Phase of blastema formation | |