Year :
1992
Title :
Biology
Exam :
JAMB Exam
Paper 1 | Objectives
41 - 50 of 50 Questions
| # | Question | Ans |
|---|---|---|
| 41. |
A child with blood group genotype different from those of both parents and with a mother of genotype OO, can only have a father of genotype A. A B. B C. AB D. OO |
C |
| 42. |
If R and r, denotes the genes for a character, the offspring of the cross between RR and Rr are A. RR, 2Rr, rr B. 2RR, 2rr, 2rr C. 2RR, 2Rr D. 4Rr |
C |
| 43. |
A mammal with red fur and long ears was crossed with another having white fur and short ears. If the offspring had a red fur and short ears, the A. character are linked B. character are not linked C. parents are related D. parents are not related |
A |
| 44. |
Pawpaw seeds collected from a tree with many desirable agronomic qualities did not give rise to plants of desirable character as the parent because A. seeds are not reliable for propagating plants B. uncontrolled out-crossing can introduced unwanted variability C. vegetative propagation is best form of reproduction of all crop D. seeds were not physiologically mature at the harvest |
B |
| 45. |
Woman do not suffer from colour blindness because A. the trait is sex-linked B. only men are colour blind C. the genes are recessive and sex-linked D. the genes occur on both the X and Y chromosomes |
C |
| 46. |
The hereditary materials of the cell is A. the R N A B. protein C. the D N A D. carbohydrate |
C |
| 47. |
An example of plant adaptation to a xerophytic environment is represented by the development of A. fleshy tissue and reduced leaves B. broad canopy and extensive surface root system C. thick barks and broad leaves D. rough leaves and shallow root system |
A |
| 48. |
Which of the following factors is LEAST likely to affect the animals living in a fresh water habitat? A. Turbidity B. Temperature C. pH D. Salinity |
D |
| 49. |
The theory of natural selection was developed by A. Lamarck and Darwin B. Darwin and Wallace C. Wallace and Mendel D. Mendel and Larmack |
B |
| 50. |
Fossil records found in sedimentary rocks offer some explanation for the theory of evolution because A. the deposit have remains of organisms characteristic of when they were formed B. different strata have remains of organisms of the same kind C. only organisms with strong parts are fossilized D. most animal and plant fossils bear little resemblance to present day living specimens |
A |
| 41. |
A child with blood group genotype different from those of both parents and with a mother of genotype OO, can only have a father of genotype A. A B. B C. AB D. OO |
C |
| 42. |
If R and r, denotes the genes for a character, the offspring of the cross between RR and Rr are A. RR, 2Rr, rr B. 2RR, 2rr, 2rr C. 2RR, 2Rr D. 4Rr |
C |
| 43. |
A mammal with red fur and long ears was crossed with another having white fur and short ears. If the offspring had a red fur and short ears, the A. character are linked B. character are not linked C. parents are related D. parents are not related |
A |
| 44. |
Pawpaw seeds collected from a tree with many desirable agronomic qualities did not give rise to plants of desirable character as the parent because A. seeds are not reliable for propagating plants B. uncontrolled out-crossing can introduced unwanted variability C. vegetative propagation is best form of reproduction of all crop D. seeds were not physiologically mature at the harvest |
B |
| 45. |
Woman do not suffer from colour blindness because A. the trait is sex-linked B. only men are colour blind C. the genes are recessive and sex-linked D. the genes occur on both the X and Y chromosomes |
C |
| 46. |
The hereditary materials of the cell is A. the R N A B. protein C. the D N A D. carbohydrate |
C |
| 47. |
An example of plant adaptation to a xerophytic environment is represented by the development of A. fleshy tissue and reduced leaves B. broad canopy and extensive surface root system C. thick barks and broad leaves D. rough leaves and shallow root system |
A |
| 48. |
Which of the following factors is LEAST likely to affect the animals living in a fresh water habitat? A. Turbidity B. Temperature C. pH D. Salinity |
D |
| 49. |
The theory of natural selection was developed by A. Lamarck and Darwin B. Darwin and Wallace C. Wallace and Mendel D. Mendel and Larmack |
B |
| 50. |
Fossil records found in sedimentary rocks offer some explanation for the theory of evolution because A. the deposit have remains of organisms characteristic of when they were formed B. different strata have remains of organisms of the same kind C. only organisms with strong parts are fossilized D. most animal and plant fossils bear little resemblance to present day living specimens |
A |