MCQOPTIONS
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MCQOPTIONS
This section includes 29 Mcqs, each offering curated multiple-choice questions to sharpen your Life Sciences knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In the given item consist of two statements, one labelled as 'Assertion (A)' and the other labelled as 'Reason (R)'. Assertion (A): The sons of a colour blind woman are always colour blind but not the daughters. Reason (R): Colour blindness is a sex-linked character and such characters are transferred from mother to son only. Select your answers to these items using the codes given below. Codes: |
| A. | Both A and R are true and R is the correct explanation of A |
| B. | Both A and R are true but R is not a correct explanation of A |
| C. | A is true but R is false |
| D. | A is false but R is true |
| Answer» C. A is true but R is false | |
| 2. |
In the given item consist of two statements, one labelled as 'Assertion (A)' and the other labelled as 'Reason (R)'. Assertion (A): Saturated fats are more reactive as compared to unsaturated fats. Reason (R): Molecules of unsaturated fats have double bonds. Select your answers to these items using the codes given below. Codes: |
| A. | Both A and R are true and R is the correct explanation of A |
| B. | Both A and R are true but R is not a correct explanation of A |
| C. | A is true but R is false |
| D. | A is false but R is true |
| Answer» E. | |
| 3. |
In the given item consist of two statements, one labelled as 'Assertion (A)' and the other labelled as 'Reason (R)'. Assertion (A): Persons with AB blood group can accept blood from any blood group. Reason (R): They are universal acceptor Select your answers to these items using the codes given below. Codes: |
| A. | Both A and R are true and R is the correct explanation of A |
| B. | Both A and R are true but R is not a correct explanation of A |
| C. | A is true but R is false |
| D. | A is false but R is true |
| Answer» B. Both A and R are true but R is not a correct explanation of A | |
| 4. |
Which of the following statement is related with the 'Sulphur shower'? |
| A. | Discharge of large quantities of Crocus (yellow kesar) pollen grains into the air. |
| B. | Discharge of large quantities of pinus pollen grains into the air forming yellowish clouds. |
| C. | Release of a large amount of sulphur particles into the air from factories processing sulphur. |
| D. | Release of a large amount of sulphur particles into the air near sulphur mines. |
| Answer» C. Release of a large amount of sulphur particles into the air from factories processing sulphur. | |
| 5. |
How many bones comprise the adult human skeleton? |
| A. | 204 bones |
| B. | 206 bones |
| C. | 208 bones |
| D. | 214 bones |
| Answer» C. 208 bones | |
| 6. |
In how many times human will lose their consciousness if blood will stop flowing to the brain? |
| A. | 2 sec |
| B. | 5 sec |
| C. | 15 to 20 sec |
| D. | 5 min |
| Answer» C. 15 to 20 sec | |
| 7. |
What happen when the exposure to carbon monoxide (from coal gas) is extremely dangerous and can kill a patient? |
| A. | The compound carboxy-haemoglobin (COHb) it forms with haemoglobin can gradually clot the blood resulting in circulatory failure. |
| B. | COHb reduces the ability of blood to transport oxygen by rupturing a vast majority of erythrocytes. |
| C. | COHb is stable compound and thus deprives blood of its ability to transport oxygen. |
| D. | COHb greatly modifies the structure of haemoglobin thus making it lose its affinity for oxygen. |
| Answer» D. COHb greatly modifies the structure of haemoglobin thus making it lose its affinity for oxygen. | |
| 8. |
Which of the following disease occur when the replacement of breast feeding by less nutritive food, low in proteins and calories, infants below the age of one year? |
| A. | Kwashiorkor |
| B. | Marasmus |
| C. | Rickets |
| D. | Pellagra |
| Answer» C. Rickets | |
| 9. |
What part of the Quinine plant is commonly used drug for Malaria? |
| A. | Leaves |
| B. | Fruits |
| C. | Root |
| D. | Stem bark |
| Answer» E. | |
| 10. |
Which of the following blood group is considered as Universal Donor? |
| A. | a |
| B. | ab |
| C. | b |
| D. | o |
| Answer» E. | |
| 11. |
. What proportion of children is likely to be colour blindness when their parent (mother has normal vision & father has colour-blindness)? |
| A. | 0 per cent |
| B. | 25 per cent |
| C. | 50 per cent |
| D. | 100 per cent |
| Answer» B. 25 per cent | |
| 12. |
Which of the following is the universal recipient blood group? |
| A. | a |
| B. | b |
| C. | ab |
| D. | 0 |
| Answer» D. 0 | |
| 13. |
Where does fertilization occurs in the female? |
| A. | Fallopian tube |
| B. | Uterus |
| C. | Cervix |
| D. | Vagina |
| Answer» B. Uterus | |
| 14. |
Which of the following led to the expulsion of milk from the breast during suckling? |
| A. | Prolactin |
| B. | Oxytocin |
| C. | Vasopressin |
| D. | Estrogen and Progesterone |
| Answer» C. Vasopressin | |
| 15. |
Which of the following pigment causes eye colour of person (brown eyes, blue eyes or black eyes)? |
| A. | Cornea |
| B. | Choroid |
| C. | Iris |
| D. | Vitreous body |
| Answer» D. Vitreous body | |
| 16. |
Which of the following is the volume of the urine produced in an adult human every 24 hours? |
| A. | 1 litre |
| B. | 1.5 litres |
| C. | 3.0 litres |
| D. | 5.0 litres |
| Answer» C. 3.0 litres | |
| 17. |
What is the averages rate of the heart beats (per minute) in an adult? |
| A. | 60 |
| B. | 62 |
| C. | 84 |
| D. | 96 |
| Answer» C. 84 | |
| 18. |
Why it is not advisable to sleep under a tree at night? |
| A. | Release of less oxygen |
| B. | Release of more oxygen |
| C. | Release of carbon dioxide |
| D. | Release of carbon monoxide |
| Answer» D. Release of carbon monoxide | |
| 19. |
Who said this statement? "I flatter myself having discovered the method that nature employs to purify air. It is vegetation." |
| A. | Antonine Laurent Lavoisier |
| B. | Joseph Priestley |
| C. | Louis Pasteur |
| D. | William Harvey |
| Answer» C. Louis Pasteur | |
| 20. |
Which of the following teeth of child (3-4 Years) is not a part of the milk teeth? |
| A. | Incisors |
| B. | Canines |
| C. | Molars |
| D. | Premolars |
| Answer» D. Premolars | |
| 21. |
Who among the following discovered the anti-rabies vaccine? |
| A. | Edward Jenner |
| B. | James Lind |
| C. | Louis Pasteur |
| D. | Robert Koch |
| Answer» D. Robert Koch | |
| 22. |
If a person can see an object clearly when it is placed at about 25cm away from him, he is suffering from: |
| A. | Myopia |
| B. | Hyper- myopia |
| C. | Astigmatism |
| D. | None of the above |
| Answer» E. | |
| 23. |
Excess of amino acids is broken down to form urea in: |
| A. | Kidney |
| B. | Liver |
| C. | Spleen |
| D. | Rectum |
| Answer» B. Liver | |
| 24. |
Chromosome complement in Turner's syndrome is |
| A. | 47; XXY |
| B. | 45; XO |
| C. | 46; XX |
| D. | 47; XYY |
| Answer» C. 46; XX | |
| 25. |
Which of the following are known as the suicide bags of cells? |
| A. | Ribosomes |
| B. | Golgi bodies |
| C. | Lysosomes |
| D. | Nucleoli |
| Answer» D. Nucleoli | |
| 26. |
Which one of the following plant nutrients is not supplemented in the soil for growing legumes? |
| A. | Nitrogen |
| B. | Potassium |
| C. | Phosphorus |
| D. | None of these |
| Answer» C. Phosphorus | |
| 27. |
In the human body, the blood enters the aorta of the circulatory system from the: |
| A. | Left atrium |
| B. | Left ventricle |
| C. | Right atrium |
| D. | Right ventricle |
| Answer» C. Right atrium | |
| 28. |
Which one of the following systems of the body is primarily attacked by the HIV? |
| A. | Cardiovascular |
| B. | Immune |
| C. | Respiratory |
| D. | Reproductive |
| Answer» C. Respiratory | |
| 29. |
Which of the following is a sexually transmitted disease? |
| A. | Leukaemia |
| B. | Hepatitis |
| C. | Colour Blindness |
| D. | All of the above |
| Answer» D. All of the above | |