Year :
1993
Title :
Biology
Exam :
JAMB Exam
Paper 1 | Objectives
41 - 50 of 50 Questions
| # | Question | Ans |
|---|---|---|
| 41. |
Carbon monoxide poisons tissue by A. constricting the blood vessels B. killing the cells C. combining with haemoglobin D. rupturing the blood vessels |
C |
| 42. |
Which of the following is an example of discontinuous variation observed in man? A. Skin colours B. Tongue rolling C. Body weight D. Height |
B |
| 43. |
During blood transfusion, agglutination may occur when A. contrasting antigens reacts with contrasting antibodies B. similar antigens react with similar antibodies C. two different antigens react with each other D. two different antibodies react with each other Detailed SolutionAgglutination is the process that occurs if an antigen is mixed with its corresponding antibody called isoagglutinin. |
|
| 44. |
 In the illustration above, the genotypes of the offsprings are A. 1 heterozygous smooth : 2 homozygous smooth : 1 wrinkled B. 1 homozygous smooth : 2 heterozygous smooth : 1 wrinkled C. 2 homozygous smooth : 2 wrinkled D. 3 heterozygous smooth : 2 wrinkled Detailed Solution
SS : Ss : sS : ss and from the question, we see the genotypic composition is; 1 homozygous smooth : 2 heterozygous smooth : 1 wrinkled |
|
| 45. |
Cold blooded animals are referred to as A. poikilothermic B. homothermic C. polythermic D. homeostatic |
A |
| 46. |
Which of the following organisms has lost the pentadactyl limb structure? A. Bat B. Fish C. Frog D. Pigeon Detailed SolutionPentadactyl limb structure is found in amphibians, humans, birds and reptiles. However, fishes have lost their pentadactyl limb structure. |
|
| 47. |
 Which of the following is the correct order of the developmental stages? A. 1->2->3->4->5 B. 5->1->3->2->4 C. 2->1->3->4->5 D. 5->3->2->1->4 |
D |
| 48. |
 Stage 3 breathes A. with the lungs B. with the external gills C. with the internal gills D. through the skin |
D |
| 49. |
 Blood is pumped into the right ventricle by the contraction of the auricle wall through A. 1 B. 3 C. 5 D. 6 |
B |
| 50. |
 After circulation in the lungs, the blood returns to the left auricle through A. 1 B. 4 C. 5 D. 6 |
D |
| 41. |
Carbon monoxide poisons tissue by A. constricting the blood vessels B. killing the cells C. combining with haemoglobin D. rupturing the blood vessels |
C |
| 42. |
Which of the following is an example of discontinuous variation observed in man? A. Skin colours B. Tongue rolling C. Body weight D. Height |
B |
| 43. |
During blood transfusion, agglutination may occur when A. contrasting antigens reacts with contrasting antibodies B. similar antigens react with similar antibodies C. two different antigens react with each other D. two different antibodies react with each other Detailed SolutionAgglutination is the process that occurs if an antigen is mixed with its corresponding antibody called isoagglutinin. |
|
| 44. |
In the illustration above, the genotypes of the offsprings are A. 1 heterozygous smooth : 2 homozygous smooth : 1 wrinkled B. 1 homozygous smooth : 2 heterozygous smooth : 1 wrinkled C. 2 homozygous smooth : 2 wrinkled D. 3 heterozygous smooth : 2 wrinkled Detailed Solution
SS : Ss : sS : ss and from the question, we see the genotypic composition is; 1 homozygous smooth : 2 heterozygous smooth : 1 wrinkled |
|
| 45. |
Cold blooded animals are referred to as A. poikilothermic B. homothermic C. polythermic D. homeostatic |
A |
| 46. |
Which of the following organisms has lost the pentadactyl limb structure? A. Bat B. Fish C. Frog D. Pigeon Detailed SolutionPentadactyl limb structure is found in amphibians, humans, birds and reptiles. However, fishes have lost their pentadactyl limb structure. |
|
| 47. |
Which of the following is the correct order of the developmental stages? A. 1->2->3->4->5 B. 5->1->3->2->4 C. 2->1->3->4->5 D. 5->3->2->1->4 |
D |
| 48. |
Stage 3 breathes A. with the lungs B. with the external gills C. with the internal gills D. through the skin |
D |
| 49. |
Blood is pumped into the right ventricle by the contraction of the auricle wall through A. 1 B. 3 C. 5 D. 6 |
B |
| 50. |
After circulation in the lungs, the blood returns to the left auricle through A. 1 B. 4 C. 5 D. 6 |
D |