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. |
Apical meristems play an important role in |
| A. | secondary growth |
| B. | lateral growth |
| C. | primary growth |
| D. | pre-primary growth |
| Answer» D. pre-primary growth | |
| 2. |
The meristematic cells are located at the |
| A. | stem |
| B. | root |
| C. | flower |
| D. | both a and b |
| Answer» E. | |
| 3. |
The morula stage changes into |
| A. | gastrula |
| B. | neurula |
| C. | both a and b |
| D. | blastula |
| Answer» E. | |
| 4. |
Nucleus in acetabularia lies in the |
| A. | stalk |
| B. | cap |
| C. | base |
| D. | gills |
| Answer» D. gills | |
| 5. |
Final size of a given cell type is attained during |
| A. | maturation |
| B. | elongation |
| C. | cell division |
| D. | differentiation |
| Answer» B. elongation | |
| 6. |
A very high supply of oxygen in plants |
| A. | promotes growth |
| B. | inhibits growth |
| C. | does not influence growth |
| D. | none of the above |
| Answer» C. does not influence growth | |
| 7. |
The third cleavage in the bird's egg is |
| A. | vertical |
| B. | horizontally parallel to the surface |
| C. | horizontal and perpendicular to the surface |
| D. | side ways |
| Answer» C. horizontal and perpendicular to the surface | |
| 8. |
In plants, without the supply of oxygen |
| A. | no metabolic activity is possible |
| B. | no growth takes place |
| C. | growth still occurs |
| D. | both a and b |
| Answer» E. | |
| 9. |
Stage two of differentiation involves |
| A. | recognition of apical meristems |
| B. | formation of embryo |
| C. | recognition of cambium |
| D. | production of leaf primordial |
| Answer» B. formation of embryo | |
| 10. |
Peripheral part of the blastoderm where the cells lie unseparated from the yolk is termed as |
| A. | area opaca |
| B. | area pellucida |
| C. | area translucent |
| D. | zone of junction |
| Answer» B. area pellucida | |
| 11. |
Larval epidermis is produced by |
| A. | clear cytoplasm |
| B. | yellow cytoplasm |
| C. | gray vegetal cytoplasm |
| D. | brown cytoplasm |
| Answer» B. yellow cytoplasm | |
| 12. |
In vascular plants growth occurs through the activity of |
| A. | meristems |
| B. | schlerenchyma |
| C. | collenchyma |
| D. | pith |
| Answer» B. schlerenchyma | |
| 13. |
In bird's egg the process of cell division is confined to the small disc of protoplasm lying on the surface of |
| A. | yolk at animal pole |
| B. | yolk at vegetative pole |
| C. | egg white at animal pole |
| D. | none of the above |
| Answer» B. yolk at vegetative pole | |
| 14. |
In the gray crescent area the cytoplasm contains essential information for |
| A. | growth |
| B. | development |
| C. | reproduction |
| D. | respiration |
| Answer» C. reproduction | |
| 15. |
Muscle cells are produced by |
| A. | clear cytoplasm |
| B. | yellow cytoplasm |
| C. | gray vegetal cytoplasm |
| D. | brown cytoplasm |
| Answer» C. gray vegetal cytoplasm | |
| 16. |
Gray equatorial cytoplasm produces |
| A. | notochord |
| B. | neural tube |
| C. | gut |
| D. | both a and b |
| Answer» E. | |
| 17. |
Growth is mainly divided into |
| A. | three types |
| B. | two types |
| C. | four types |
| D. | five types |
| Answer» C. four types | |
| 18. |
The hypoblast is mainly presumptive |
| A. | ectoderm |
| B. | mesoderm |
| C. | endoderm |
| D. | both a and b |
| Answer» D. both a and b | |
| 19. |
Young tissues or group of cells in plants that retain the potential to divide are called |
| A. | pith |
| B. | meristems |
| C. | cortex |
| D. | intercalary tissue |
| Answer» C. cortex | |
| 20. |
In differentiation process cambium responsible for secondary growth is recognized during |
| A. | stage one |
| B. | stage two |
| C. | stage three |
| D. | stage four |
| Answer» D. stage four | |
| 21. |
The gastrocoele cavity is now termed as |
| A. | primitive pit |
| B. | primitive ridge |
| C. | primitve node |
| D. | primitive gut |
| Answer» E. | |
| 22. |
Negative phsiological changes in our body can be termed as |
| A. | growth |
| B. | aging |
| C. | breakdown |
| D. | death |
| Answer» C. breakdown | |
| 23. |
Intercalary meristems are located at the base of |
| A. | internodes |
| B. | nodes |
| C. | elongation zone |
| D. | flower |
| Answer» B. nodes | |
| 24. |
Cell elongation if favoured by |
| A. | blue light |
| B. | red light |
| C. | white light |
| D. | brown light |
| Answer» C. white light | |
| 25. |
Acetabularia mediterranea has a cap of |
| A. | regular shape |
| B. | circular shape |
| C. | triangular shape |
| D. | cone shape |
| Answer» B. circular shape | |
| 26. |
Apical meristems are found at the tips of |
| A. | root |
| B. | shoot |
| C. | both root and shoot |
| D. | none of the above |
| Answer» D. none of the above | |
| 27. |
When the folding of neural plate is clearly visible the embryo is termed as |
| A. | neurula |
| B. | gastrula |
| C. | blastula |
| D. | none of the above |
| Answer» B. gastrula | |
| 28. |
In chick the shell of egg is secreted as the egg passes through the |
| A. | uterus |
| B. | ureter |
| C. | oviduct |
| D. | ovary |
| Answer» B. ureter | |
| 29. |
Changes is intracellular substances during aging includes |
| A. | increased cross linkages of collagen |
| B. | loss of elasticity in elastic tissues |
| C. | loss of resilience in connective tissue |
| D. | all of the above |
| Answer» E. | |
| 30. |
Xylem, phloem, leaves, shoots and roots are completely formed in |
| A. | stage one of differentiation |
| B. | stage two of differentiation |
| C. | stage three of differentiation |
| D. | stage five of differentiation |
| Answer» E. | |
| 31. |
The movement and re-arrangement of cells takes place in |
| A. | gastrulation |
| B. | neurulation |
| C. | blastulation |
| D. | both a and b |
| Answer» B. neurulation | |
| 32. |
The stage of development in which body organs are formed, cells interact and differentiate is called |
| A. | gastrulation |
| B. | fertilization |
| C. | organogenesis |
| D. | growth |
| Answer» D. growth | |
| 33. |
The cells that elongate length wise more than in other direction are |
| A. | pith |
| B. | cortex |
| C. | fibers and tracheids |
| D. | cambium |
| Answer» D. cambium | |
| 34. |
Primitive ridges are thickened margins of |
| A. | primitive streak |
| B. | neural plate |
| C. | primitive groove |
| D. | neural tube |
| Answer» D. neural tube | |
| 35. |
The phenomena that some cells evoke a specific developmental response in other cells is |
| A. | embryonic influence |
| B. | embryonic induction |
| C. | embryonic stimulation |
| D. | embryonic dominance |
| Answer» C. embryonic stimulation | |
| 36. |
Production of leaves and flowers is due to |
| A. | lateral meristems |
| B. | intercalary meristems |
| C. | apical meristems |
| D. | cortex |
| Answer» C. apical meristems | |
| 37. |
The cell divisions are enhanced by the effect of |
| A. | red light |
| B. | blue light |
| C. | white light |
| D. | yellow light |
| Answer» C. white light | |
| 38. |
Degeneration of cartilage gives rise to |
| A. | arthritis |
| B. | epilepsy |
| C. | parkinson's disease |
| D. | goiter |
| Answer» B. epilepsy | |
| 39. |
The process of formation of central nervous system is called |
| A. | gastrulation |
| B. | centralization |
| C. | neurulation |
| D. | blastulation |
| Answer» D. blastulation | |
| 40. |
At the cephalic end of primitive streak closely packed cells form a local thickening known as |
| A. | nodes of ranvier |
| B. | spemann's node |
| C. | albert's node |
| D. | hensen's node |
| Answer» E. | |
| 41. |
Cell elongation is retarded by |
| A. | ultraviolet rays |
| B. | blue light |
| C. | red light |
| D. | both a and b |
| Answer» E. | |
| 42. |
The cell had no nucleus was termed as |
| A. | nucleated cell |
| B. | de-nucleated cell |
| C. | degenerated cell |
| D. | anucleate cell |
| Answer» E. | |
| 43. |
Spemann performed experiments on zygote of |
| A. | hydra |
| B. | salamander |
| C. | sea urchin |
| D. | turtle |
| Answer» C. sea urchin | |
| 44. |
The rate of growth stops and plants die at a temperature of |
| A. | 20-30 |
| B. | 01-10-2020 12:00:00 AM |
| C. | 35-40 |
| D. | 05-10-2015 12:00:00 AM |
| Answer» D. 05-10-2015 12:00:00 AM | |
| 45. |
Hans Driesch in his experiment took egg of |
| A. | salamander |
| B. | sear urchin |
| C. | earthworm |
| D. | turtle |
| Answer» C. earthworm | |
| 46. |
For maximum growth the optimum temperature is |
| A. | 25-30 |
| B. | 01-10-2020 12:00:00 AM |
| C. | 01-10-2015 12:00:00 AM |
| D. | 01-10-1950 12:00:00 AM |
| Answer» B. 01-10-2020 12:00:00 AM | |
| 47. |
Secondary tissue is added by the |
| A. | intercalary meristem |
| B. | vascular cambium |
| C. | apical meristems |
| D. | both a and b |
| Answer» E. | |
| 48. |
Fertlization in chick normally takes place just as the ovum is entering the |
| A. | uterus |
| B. | ureter |
| C. | oviduct |
| D. | ovary |
| Answer» D. ovary | |
| 49. |
From th rhizoid of acetabularia a stalk arises having a |
| A. | triangular cap |
| B. | umbrella shaped cap |
| C. | oval cap |
| D. | no cap |
| Answer» C. oval cap | |
| 50. |
An external factor influencing growth is |
| A. | temperature |
| B. | light |
| C. | oxygen |
| D. | all of the above |
| Answer» E. | |