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. |
Plants developing in dry conditions are _________________ |
| A. | hydrophytes |
| B. | mesophytes |
| C. | lithophytes |
| D. | xerophytes |
| Answer» E. | |
| 2. |
Survival of the fittest' was proposed in his theory of evolution by _________________ |
| A. | Darwin |
| B. | Lamarck |
| C. | Mendel |
| D. | Hugo de vries |
| Answer» B. Lamarck | |
| 3. |
Plants synthesis protein from _________________ |
| A. | fatty acids |
| B. | sugar |
| C. | amino acids |
| D. | starch |
| Answer» D. starch | |
| 4. |
Poison glands of snakes are homologous to _________________ |
| A. | electric organs of fishes |
| B. | stings of rays |
| C. | sebaceous glands of mammals |
| D. | salivary glands of vertebrates |
| Answer» E. | |
| 5. |
Normal adult human male has _________________ |
| A. | 24 gram of haemoglobin/100 gram of blood |
| B. | 14 gram of haemoglobin/100 gram of blood |
| C. | 18 gram of haemoglobin/100 gram of blood |
| D. | 10 gram of haemoglobin/100 gram of blood |
| Answer» C. 18 gram of haemoglobin/100 gram of blood | |
| 6. |
Photo-oxidation is _________________ |
| A. | photorespiration |
| B. | photolysis |
| C. | light and oxygen induced breakdown |
| D. | All of the above |
| Answer» E. | |
| 7. |
The blood which leaves the liver and moves to the heart has a higher concentration of _________________ |
| A. | Glucose |
| B. | Bile Pigments |
| C. | Bile |
| D. | Urea |
| Answer» C. Bile | |
| 8. |
The children of a colour-blind mother and a normal father will be |
| A. | Colour blind sons and daughters |
| B. | Normal sons and carrier daughters |
| C. | Colour blind sons and carrier daughters |
| D. | Normal daughters and sons |
| Answer» D. Normal daughters and sons | |
| 9. |
Mutation is _________________ |
| A. | a factor responsible for plant growth |
| B. | a change which affects the offspring of F2 generation only |
| C. | a change that is inherited |
| D. | a change which affects the parents |
| Answer» D. a change which affects the parents | |
| 10. |
Nymph is the name of young one of _________________ |
| A. | butterfly |
| B. | beetle |
| C. | housefly |
| D. | cockroach |
| Answer» E. | |
| 11. |
Plants that grow in saline water are called _________________ |
| A. | halophytes |
| B. | hydrophytes |
| C. | mesophytes |
| D. | thallophytes |
| Answer» B. hydrophytes | |
| 12. |
Prothrombin which helps in clotting of blood is released by _________________ |
| A. | blood platelets |
| B. | erythrocytes |
| C. | monocytes |
| D. | lymphocytes |
| Answer» B. erythrocytes | |
| 13. |
The ABO blood groups were discovered by _________________ |
| A. | Watson |
| B. | Karl Landsteiner |
| C. | Gregor Mendel |
| D. | Charles Darwin |
| Answer» C. Gregor Mendel | |
| 14. |
Where are the red blood cells in body ? |
| A. | bone marrow |
| B. | liver |
| C. | lymph nodes |
| D. | heart |
| Answer» B. liver | |
| 15. |
N2 content is kept constant in the biosphere due to _________________ |
| A. | N2 fixation |
| B. | industrial pollution |
| C. | nitrogen cycle |
| D. | absorption of N2 |
| Answer» D. absorption of N2 | |
| 16. |
Placenta is the structure formed _________________ |
| A. | None of these |
| B. | by foetus only |
| C. | by fusion of germ layers |
| D. | by the union of foetal and uterine tissue |
| Answer» E. | |
| 17. |
Radish is a _________________ |
| A. | tuber |
| B. | conn |
| C. | modified root |
| D. | bulb |
| Answer» D. bulb | |
| 18. |
DNA structure was first described by _________________ |
| A. | Catcheside |
| B. | Nirenberg |
| C. | Lederberg |
| D. | Watson and Crick |
| Answer» E. | |
| 19. |
Plants absorb dissolved nitrates from soil and convert them into _________________ |
| A. | free nitrogen |
| B. | urea |
| C. | ammonia |
| D. | proteins |
| Answer» B. urea | |
| 20. |
Which part of the human brain is the centre of memory, learning, thinking and reasoning? |
| A. | Cerebrum |
| B. | Hypophysis |
| C. | Cerebellum |
| D. | Medulla |
| Answer» B. Hypophysis | |
| 21. |
Ramapithecus and Cro-Magnon man are considered _________________ |
| A. | ancestors of modern man |
| B. | ancestors of monkey |
| C. | ancestors of lion |
| D. | None of the above |
| Answer» B. ancestors of monkey | |
| 22. |
Plants absorb most part of water needed by them through their _________________ |
| A. | zone of elongation |
| B. | growing point |
| C. | root hairs |
| D. | embryonic zone |
| Answer» D. embryonic zone | |
| 23. |
Plants hormone that induces cell division is _________________ |
| A. | auxins |
| B. | gibberellins |
| C. | kinins |
| D. | domins |
| Answer» D. domins | |
| 24. |
Identical twins are born, when |
| A. | One sperm fertilize one ovum. Zygote cleaves into two cells that develop independently. |
| B. | Two sperms fertilize one ovum |
| C. | One sperm fertilize one ovum |
| D. | Two sperms fertilize two ova |
| Answer» C. One sperm fertilize one ovum | |
| 25. |
Radioactivity is a phenomenon of the spontaneous emission of _________________ |
| A. | All of the above |
| B. | electrons (beta particles) |
| C. | gamma rays (short wave electromagnetic waves) |
| D. | protons (alpha particles) |
| Answer» B. electrons (beta particles) | |
| 26. |
Neurospora is used as genetic material because _________________ |
| A. | is a diploid fungus |
| B. | the product of single meiosis can be easily analysed |
| C. | meiotic products are linearly arranged in the form of ordered tetrads |
| D. | it has short life cycle of 10 days |
| Answer» E. | |
| 27. |
The kinds of ribonucleic acid present in any plant cell will be |
| A. | 5 |
| B. | 4 |
| C. | 3 |
| D. | 2 |
| Answer» E. | |
| 28. |
Plants are killed in winter by frost _________________ |
| A. | because of desiccation and mechanical damage to the tissues |
| B. | because no photosynthesis takes place at such low temperature |
| C. | because respiration ceases at such low temperature |
| D. | because there is no transpiration |
| Answer» B. because no photosynthesis takes place at such low temperature | |
| 29. |
Pigmentation of skin is due to _________________ |
| A. | melanocytes |
| B. | monocytes |
| C. | leucocytes |
| D. | lymphocytes |
| Answer» B. monocytes | |
| 30. |
Outer covering of virus made up of protein is _________________ |
| A. | viriod |
| B. | coat |
| C. | virion |
| D. | capsid |
| Answer» E. | |
| 31. |
Our major foods, fibres, spices, fruits and beverage crops are _________________ |
| A. | bryophytes |
| B. | gymnosperms plants |
| C. | pteridophytes |
| D. | flowering plants |
| Answer» E. | |
| 32. |
Rain water helps to increase the _________________ to some extent. |
| A. | phosphorous contents |
| B. | nitrogen contents |
| C. | calcium contents |
| D. | potash contents |
| Answer» D. potash contents | |
| 33. |
Movement of cell against concentration gradient is called _________________ |
| A. | osmosis |
| B. | active transport |
| C. | diffusion |
| D. | passive transport |
| Answer» C. diffusion | |
| 34. |
Radical vascular bundles are those in which _________________ |
| A. | xylem is surrounded by phloem |
| B. | phloem is surrounded by xylem |
| C. | xylem and phloem occur on the same radius |
| D. | xylem and phloem occur on the different radii |
| Answer» E. | |
| 35. |
Plants that grow under average temperature and moisture are called _________________ |
| A. | halophytes |
| B. | hydrophytes |
| C. | mesophytes |
| D. | xerophytes |
| Answer» D. xerophytes | |
| 36. |
Ptyalin is an enzyme produced in the _________________ |
| A. | pancreas |
| B. | pituitary glands |
| C. | thyroid glands |
| D. | salivary glands |
| Answer» E. | |
| 37. |
When was First human heart transplant operation conducted by Dr. Christian Bernard on Louis Washkansky, was conducted ? |
| A. | 1967 |
| B. | 1968 |
| C. | 1958 |
| D. | 1922 |
| Answer» B. 1968 | |
| 38. |
Plant bends towards the source of light on account of the movement of curvature known as _________________ |
| A. | phototropism |
| B. | thigmotropism |
| C. | chemotropism |
| D. | geotropism |
| Answer» B. thigmotropism | |
| 39. |
Plants growing on sand are called as _________________ |
| A. | chasmophytes |
| B. | oxylophytes |
| C. | lithophytes |
| D. | psammophytes |
| Answer» E. | |
| 40. |
Most highly intelligent mammals are _________________ |
| A. | kangaroos |
| B. | dolphins |
| C. | elephants |
| D. | whales |
| Answer» C. elephants | |
| 41. |
Monotremes are unique mammals because they _________________ |
| A. | lay eggs |
| B. | give birth to live young |
| C. | secret milk in a pouch |
| D. | posses hair |
| Answer» B. give birth to live young | |
| 42. |
Ozone hole refers to _________________ |
| A. | increase in the thickness of ozone layer in troposphere |
| B. | decrease in the ozone layer in troposphere |
| C. | decrease in thickness of ozone layer in stratosphere |
| D. | hole in ozone layer |
| Answer» D. hole in ozone layer | |
| 43. |
Number of chromosomes in Down's syndrome is _________________ |
| A. | 46 |
| B. | 47 |
| C. | 48 |
| D. | 49 |
| Answer» C. 48 | |
| 44. |
Plant have _________________ while animals lack it. |
| A. | fat |
| B. | cellulose |
| C. | protein |
| D. | starch |
| Answer» C. protein | |
| 45. |
Pulses are a good source of _________________ |
| A. | vitamins |
| B. | fats |
| C. | proteins |
| D. | carbohydrates |
| Answer» D. carbohydrates | |
| 46. |
Our skin, when exposed to excess sunlight, becomes dark. This is because our skin pigments called _________________ |
| A. | Xanthophyll |
| B. | melanin |
| C. | carotene |
| D. | flavoxanthin |
| Answer» C. carotene | |
| 47. |
Movements due to light are shown by _________________ |
| A. | all the plants |
| B. | lower plants |
| C. | all land plants |
| D. | flowering plants |
| Answer» E. | |
| 48. |
Norepinephrine increases _________________ |
| A. | respiration |
| B. | urine production |
| C. | saliva production |
| D. | blood pressure |
| Answer» E. | |
| 49. |
Gene mutation takes place in? |
| A. | Ribosome |
| B. | Chloroplast |
| C. | Mitochondrion |
| D. | Deoxyribonucleric acid |
| Answer» D. Deoxyribonucleric acid | |
| 50. |
Pollination by wind is called _________________ |
| A. | entomophily |
| B. | hydrophily |
| C. | zoophily |
| D. | anemophily |
| Answer» E. | |