MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Different growth phases results in a |
| A. | 'S' shaped curve on graph |
| B. | Straight curve on graph |
| C. | Zig-zag curve on graph |
| D. | Spiral curve on graph |
| Answer» B. Straight curve on graph | |
| 2. |
The type of growth of bands in conifers is [DPMT 1991] |
| A. | Lateral |
| B. | Delinquent |
| C. | Caudex |
| D. | Excurrent |
| Answer» C. Caudex | |
| 3. |
Degrowth is seen during |
| A. | Regeneration |
| B. | Autotomy |
| C. | Metamorphosis |
| D. | All the above |
| Answer» D. All the above | |
| 4. |
Which one of the following is the motivative force for growth [NCERT 1979] |
| A. | Turgor pressure |
| B. | Root pressure |
| C. | Atmospheric pressure |
| D. | Osmotic pressure |
| Answer» B. Root pressure | |
| 5. |
Mitotic division in chondriocytes, osteocytes and mesenchyme cells in an adult is the example of |
| A. | Multiplicative growth |
| B. | Auxetic growth |
| C. | Accretionary growth |
| D. | Deaccelerating growth |
| Answer» D. Deaccelerating growth | |
| 6. |
What is the role of light in plants [JIPMER 1988] |
| A. | It is necessary for photosynthesis |
| B. | It controls growth and movement |
| C. | It controls the distribution of hormones |
| D. | All the above |
| Answer» E. | |
| 7. |
Growth controlling factors are |
| A. | Constitutional factors |
| B. | Temperature |
| C. | Nutritional factor |
| D. | All the above |
| Answer» E. | |
| 8. |
The portion of sigmoid growth curve where it represents almost a horizontal line indicates that growth rate |
| A. | Slows down (lag phase) |
| B. | Increases very fast (Exponential phase) |
| C. | Again slows down (Senescent phase) |
| D. | Reduces and becomes constant (Steady phase) |
| Answer» E. | |
| 9. |
Several horticultural techniques are followed for the production of 'bonsai' plants. One of them is drastic pruning of root system. Which of the following physiological factor is involved in that method [CBSE PMT 1990] |
| A. | Inadequacy of mineral nutrients |
| B. | Deficiency of auxins |
| C. | Impairment of water absorption |
| D. | Deficiency of cytokinins |
| Answer» D. Deficiency of cytokinins | |
| 10. |
Absolute increase is |
| A. | Increase taken as a difference between the final and initial length of an organism for any period of time |
| B. | Increase taken as a difference between the final and initial age of an organism for any period of time |
| C. | Increase taken as a difference between the final and initial size or weight of an organism for any period of time |
| D. | Total increase in number of a population |
| Answer» D. Total increase in number of a population | |
| 11. |
The instrument by which the rate of growth of stem is accurately measured is [CPMT 1985] |
| A. | Hydrometer |
| B. | Auxanometer |
| C. | Osmometer |
| D. | Potometer |
| Answer» C. Osmometer | |
| 12. |
The nearest approach to pure exponential growth is found in |
| A. | Rod shaped bacteria |
| B. | Multicellular organisms |
| C. | Larvae of insects in which complete metamorphosis takes place |
| D. | All the above |
| Answer» D. All the above | |
| 13. |
Growth curve shows |
| A. | Increase in the length of the animal with age |
| B. | Increase in the mass of the animal with time |
| C. | Increase in the number of cells with age |
| D. | Increase in the mass of the animal with temperature |
| Answer» C. Increase in the number of cells with age | |
| 14. |
Which of the following is used to measure the growth in elongation |
| A. | Potometer |
| B. | Porometer |
| C. | Horizontal microscope |
| D. | Clinostate |
| Answer» D. Clinostate | |
| 15. |
Auxetic growth was defined by |
| A. | Huxley in 1932 |
| B. | Needham in 1942 |
| C. | Trambley in 1740 |
| D. | H.V. Wilson in 1907 |
| Answer» C. Trambley in 1740 | |
| 16. |
'Traumatin' is present in |
| A. | Old leaves |
| B. | Cork |
| C. | Wood |
| D. | Injured portion |
| Answer» E. | |
| 17. |
A new born sheep grows ....... times faster than a new born human being |
| A. | 10 |
| B. | 24 |
| C. | 18 |
| D. | 28 |
| Answer» D. 28 | |
| 18. |
By arc auxanometer, we measure the growth in |
| A. | Elongation |
| B. | Thickness |
| C. | Both [a] and [b] |
| D. | None of the above |
| Answer» B. Thickness | |
| 19. |
Multiplicative growth is found in |
| A. | Old age |
| B. | Adulthood |
| C. | Embryo |
| D. | Childhood |
| Answer» D. Childhood | |
| 20. |
The rate of growth is highest in |
| A. | Lag phase |
| B. | Log phase |
| C. | Steady state |
| D. | None of the above |
| Answer» C. Steady state | |
| 21. |
In animals, growth rate is |
| A. | Uniform |
| B. | Linear |
| C. | Differential |
| D. | Slow |
| Answer» D. Slow | |
| 22. |
Absolute increase is the term which means |
| A. | Total growth in life time |
| B. | Total growth in one year |
| C. | Growth of a specific body organ |
| D. | Difference between initial weight and final weight of the body during specific time interval irrespective of other factors |
| Answer» E. | |
| 23. |
The effect of oxygen supply on growth is |
| A. | Positive |
| B. | Negative |
| C. | In some plants it is positive while in others it is negative |
| D. | None of the above |
| Answer» B. Negative | |
| 24. |
Growth curve in animals is |
| A. | Delta curve |
| B. | Alpha curve |
| C. | Beta curve |
| D. | Sigmoid curve |
| Answer» E. | |
| 25. |
Auxanometer is meant for [BHU 1987; CPMT 1975, 81, 95, 2002; Kerala CET 2003; AMU 2005] |
| A. | Respiratory activity |
| B. | Photosynthetic activity |
| C. | Growth activity |
| D. | The amount of auxins |
| Answer» D. The amount of auxins | |
| 26. |
Substances synthesised during growth are |
| A. | Protoplasmic |
| B. | Apoplasmic |
| C. | Protoplasmic and apoplasmatic |
| D. | Nucleic acids |
| Answer» D. Nucleic acids | |
| 27. |
Grand period of growth is called |
| A. | Early period |
| B. | Middle period |
| C. | Total growth period |
| D. | Decreasing growth rate |
| Answer» D. Decreasing growth rate | |
| 28. |
Growth in the first 10-13 years of age is controlled by |
| A. | Somatotrophic hormone |
| B. | Thyroxine |
| C. | Thymosin |
| D. | Gonadotrophic hormone |
| Answer» D. Gonadotrophic hormone | |
| 29. |
In lag phase, growth is |
| A. | Slowest |
| B. | Fastest |
| C. | Intermediate |
| D. | No growth at all |
| Answer» B. Fastest | |
| 30. |
Accretionary growth is due to |
| A. | Reserve cells |
| B. | Meristematic cells |
| C. | Embryonic cells |
| D. | Differentiated cells |
| Answer» B. Meristematic cells | |
| 31. |
In which of the stage, the enzymatic actions start in plant |
| A. | Germination |
| B. | At the time of photosynthesis |
| C. | At the time of flower establishment |
| D. | At the time of fertilization |
| Answer» B. At the time of photosynthesis | |
| 32. |
Cell growth occurs during |
| A. | Interphase |
| B. | Mitotic phase |
| C. | Postmitotic phase |
| D. | Interphase and postmitotic phase |
| Answer» E. | |
| 33. |
The developing embryo shows |
| A. | No growth |
| B. | Auxetic growth |
| C. | Accretionary growth |
| D. | Multiplicative growth |
| Answer» E. | |
| 34. |
The process of growth is determined by |
| A. | Increase in size |
| B. | Increase in size and dry weight |
| C. | Increase weight only |
| D. | Increase in dry weight |
| Answer» C. Increase weight only | |
| 35. |
The rate of growth of any organism follows [MP PMT 1984] |
| A. | Hyperbola curve |
| B. | J-shaped curve |
| C. | Sigmoid curve |
| D. | Parabola curve |
| Answer» D. Parabola curve | |
| 36. |
Postembryonic growth is |
| A. | Accretionary |
| B. | Auxetic |
| C. | Multiplicative |
| D. | All the above |
| Answer» B. Auxetic | |
| 37. |
Etiolation in plants is caused when they [CPMT 1984; AIIMS 1985; Bihar MDAT 1995] |
| A. | Are grown in dark |
| B. | Have mineral deficiency |
| C. | Are grown in intense light |
| D. | Are grown in blue light |
| Answer» B. Have mineral deficiency | |
| 38. |
Compensatory hypertrophy is referred to the phenomenon when |
| A. | An organ redevelops |
| B. | A small piece of body produces complete animal |
| C. | One of the paired organs is lost, and the other begins to grow in size |
| D. | An organ is automatically shed |
| Answer» D. An organ is automatically shed | |
| 39. |
Morphallaxis is |
| A. | Reconstruction of the whole body |
| B. | Growth of lost limb |
| C. | Healing of injury |
| D. | Regeneration with the help of blastema |
| Answer» B. Growth of lost limb | |
| 40. |
During seed germination [CPMT 1984] |
| A. | Heat is liberated |
| B. | Starch is synthesized |
| C. | Fat is synthesized |
| D. | Light is absorbed |
| Answer» B. Starch is synthesized | |
| 41. |
Growth is |
| A. | Increase in size |
| B. | Increase in weight |
| C. | Synthesis of new protoplasm |
| D. | All the above |
| Answer» E. | |
| 42. |
The \[{{G}_{2}}\] phase of the cell cycle is signified by the synthesis of [AIIMS 1991] |
| A. | mRNA only |
| B. | rRNA only |
| C. | rRNA and mRNA |
| D. | DNA |
| Answer» D. DNA | |
| 43. |
DCMU is a herbicide which kills the plant by [BHU 1980, 82, 89] |
| A. | Checking respiration |
| B. | Destroying chloroplast |
| C. | Inhibiting carbon dioxide fixation as it is strong inhibitor of pigment system-II |
| D. | Inhibiting photolysis of water as it is a strong inhibitor of pigment system-I |
| Answer» D. Inhibiting photolysis of water as it is a strong inhibitor of pigment system-I | |
| 44. |
Maximum growth in roots occurs |
| A. | At apex |
| B. | In presence of light |
| C. | Behind the apex |
| D. | In presence of soil |
| Answer» D. In presence of soil | |
| 45. |
The standard of living is very badly affected by |
| A. | Pollution |
| B. | Housing problem |
| C. | Population growth rate |
| D. | a and b both |
| Answer» D. a and b both | |
| 46. |
Main factor in increasing the population is |
| A. | More reproductive capacity |
| B. | Early marriage |
| C. | Higher natality and lower mortality |
| D. | Suitable and favourable environment |
| Answer» D. Suitable and favourable environment | |
| 47. |
The capacity of an environment to pull on a limited number of individuals is known as |
| A. | Bearing capacity |
| B. | Limited capacity |
| C. | Environmental resistance |
| D. | Carrying capacity |
| Answer» E. | |
| 48. |
Population growth curve in most animals, except humans is [MH CET 2004] |
| A. | S-shaped |
| B. | J-shaped |
| C. | J-shaped with tail |
| D. | S-shaped with tail |
| Answer» B. J-shaped | |
| 49. |
Zero growth means : [MH CET 2004] |
| A. | Natality balances mortality |
| B. | Natality is more than mortality |
| C. | Natality is less than mortality |
| D. | Natality is zero |
| Answer» B. Natality is more than mortality | |
| 50. |
Population termed r-strategists [MH CET 2003] |
| A. | Have J-shaped growth curves |
| B. | Have type III survivorship curves |
| C. | Are usually pioneer species |
| D. | All of these |
| Answer» B. Have type III survivorship curves | |