Year :
2003
Title :
Biology
Exam :
JAMB Exam
Paper 1 | Objectives
31 - 40 of 50 Questions
| # | Question | Ans |
|---|---|---|
| 31. |
The most effective method of dealing with non-biodegradable pollutant is by A. Dumping B. Recycling C. Incineration D. Burying |
B |
| 32. |
The correct sequence of biomes from northern to southern Nigeria is A. Guinea savanna → sudan savanna → tropical rain forest → sahel savanna → estuarine B. Estuarine → tropical rain forest → guinea savanna → sahel savanna C. Sahel savanna → tropical rain forest → estuarine → guinea savanna D. Sahel savanna → sudan savanna → guinea savanna → tropical rain forest → estuarine |
D |
| 33. |
Mycorriza is an associationn between fungi and A. protozoans B. Roots of higher plants C. Bacteria D. Filamentous algae |
B |
| 34. |
A limited factor in a plant population near a chemical factory is likely to be A. Light B. Humidity C. wind D. pH |
D |
| 35. |
Soil fertility can best be conserved by the activities of A. Earthworm B. Man C. Rodent D. Microbes |
D |
| 36. |
The pioneer organisms in ecological succession are usually the A. mosses B. lichens C. ferns D. algae |
B |
| 37. |
If a DNA strand has a base sequence TCA, its complementary strand must be A. ATG B. TAG C. GAT D. AGT |
D |
| 38. |
A man and his wife are both heterozyous for the sickle-cell trait. The likely percentage of their offspring that will be either carriers or sicklers is A. 75% B. 50% C. 25% D. 100% Detailed SolutionAn heterozygote for sickle-cell anaemia = ASCrossing two AS persons, we have one AA, two AS and one SS. \(\therefore\) The probability that the children are either carriers or sicklers = \(\frac{3}{4}\) = 75% |
|
| 39. |
If the pair of alleles for baldness is given as Bb, a female carrier will be denoted by A. XbYB B. XBXB C. XBY D. XBbXb |
D |
| 40. |
An organism that has been extensively used to test the chromosomes theory of heredity is A. Drosophila melanogaster B. Muscar domestica C. Zea mays D. Homo sapiens |
A |
| 31. |
The most effective method of dealing with non-biodegradable pollutant is by A. Dumping B. Recycling C. Incineration D. Burying |
B |
| 32. |
The correct sequence of biomes from northern to southern Nigeria is A. Guinea savanna → sudan savanna → tropical rain forest → sahel savanna → estuarine B. Estuarine → tropical rain forest → guinea savanna → sahel savanna C. Sahel savanna → tropical rain forest → estuarine → guinea savanna D. Sahel savanna → sudan savanna → guinea savanna → tropical rain forest → estuarine |
D |
| 33. |
Mycorriza is an associationn between fungi and A. protozoans B. Roots of higher plants C. Bacteria D. Filamentous algae |
B |
| 34. |
A limited factor in a plant population near a chemical factory is likely to be A. Light B. Humidity C. wind D. pH |
D |
| 35. |
Soil fertility can best be conserved by the activities of A. Earthworm B. Man C. Rodent D. Microbes |
D |
| 36. |
The pioneer organisms in ecological succession are usually the A. mosses B. lichens C. ferns D. algae |
B |
| 37. |
If a DNA strand has a base sequence TCA, its complementary strand must be A. ATG B. TAG C. GAT D. AGT |
D |
| 38. |
A man and his wife are both heterozyous for the sickle-cell trait. The likely percentage of their offspring that will be either carriers or sicklers is A. 75% B. 50% C. 25% D. 100% Detailed SolutionAn heterozygote for sickle-cell anaemia = ASCrossing two AS persons, we have one AA, two AS and one SS. \(\therefore\) The probability that the children are either carriers or sicklers = \(\frac{3}{4}\) = 75% |
|
| 39. |
If the pair of alleles for baldness is given as Bb, a female carrier will be denoted by A. XbYB B. XBXB C. XBY D. XBbXb |
D |
| 40. |
An organism that has been extensively used to test the chromosomes theory of heredity is A. Drosophila melanogaster B. Muscar domestica C. Zea mays D. Homo sapiens |
A |