Biology, 2002, JAMB Exam, Exam, Paper 1 | Objectives

Paper Info

Year :

2002

Title :

Biology

Exam :

JAMB Exam

Paper 1 | Objectives

41 - 50 of 50 Questions

#	Question	Ans
41.	The gland usually found in the position labelled I is the A. adrenal B. thyriod C. pancreatic D. pituitary	D
42.	To select and retain the desirable trait of large body size which a farmer has observed in his herd, the farmer needs to A. feed the animals in the herd with more food B. cross-breed his animals with a different herd C. inbreed the animals in his herd D. prevent disease in herd	C
43.	In a population of living things, the parameters of size, height, weight and colour are examples of A. discontinuous variation B. continuous variation C. physiological variation D. non-heritable variation	B
44.	If XN is the dominant allele for normal vision and Xn the recessive allele for colour blindness, a boy with the genotype YXn will be A. have normal vision B. be colour-blind C. be totally blind D. be a carrier of colour blindness Show Content Detailed Solution The boy is a carrier because Xn the recessive allele for colour blindness	D
45.	The first four children of a couple were all girls. The probability that the fifth will also be a girl is A. 1/5 B. 1/4 C. 1/3 D. 1/2	D
46.	Genetic counselling is important when a marriage is planned between a A. Rh^- woman and Rh^man+ B. Rh^- woman and Rh^- man C. Rh⁺ woman and Rh⁺ man D. Rh⁺ woman and Rh^- man Show Content Detailed Solution Most people — about 85% — are Rh positive. But if a woman who is Rh negative and a man who is Rh positive conceive a baby, there is the potential for a baby to have a health problem. The baby growing inside the Rh-negative mother may have Rh-positive blood, inherited from the father. Approximately half of the children born to an Rh-negative mother and Rh-positive father will be Rh positive	A
47.	What proportion of the offspring of a cross between two heterozygous parents will exhibit the recessive condition phenotypically A. 1/4 B. 1/2 C. 3/4 D. 4/4	A
48.	A hormone secreted at IV serves to A. make the body react to emergencies B. lower blood glucose level C. raise the level of calcium ions in the blood D. facilitate the development of facial hairs	D
49.	Ovoviparity is the type of fertilization exhibited by the organism labelled A. IV B. III C. II D. I	C
50.	The correct evolutionary sequence of the organisms represented is A. IV->II->III->I B. III->II->I->IV C. II->III->IV->I D. I->III=>II->IV	A

41.	The gland usually found in the position labelled I is the A. adrenal B. thyriod C. pancreatic D. pituitary	D
42.	To select and retain the desirable trait of large body size which a farmer has observed in his herd, the farmer needs to A. feed the animals in the herd with more food B. cross-breed his animals with a different herd C. inbreed the animals in his herd D. prevent disease in herd	C
43.	In a population of living things, the parameters of size, height, weight and colour are examples of A. discontinuous variation B. continuous variation C. physiological variation D. non-heritable variation	B
44.	If XN is the dominant allele for normal vision and Xn the recessive allele for colour blindness, a boy with the genotype YXn will be A. have normal vision B. be colour-blind C. be totally blind D. be a carrier of colour blindness Show Content Detailed Solution The boy is a carrier because Xn the recessive allele for colour blindness	D
45.	The first four children of a couple were all girls. The probability that the fifth will also be a girl is A. 1/5 B. 1/4 C. 1/3 D. 1/2	D

46.	Genetic counselling is important when a marriage is planned between a A. Rh^- woman and Rh^man+ B. Rh^- woman and Rh^- man C. Rh⁺ woman and Rh⁺ man D. Rh⁺ woman and Rh^- man Show Content Detailed Solution Most people — about 85% — are Rh positive. But if a woman who is Rh negative and a man who is Rh positive conceive a baby, there is the potential for a baby to have a health problem. The baby growing inside the Rh-negative mother may have Rh-positive blood, inherited from the father. Approximately half of the children born to an Rh-negative mother and Rh-positive father will be Rh positive	A
47.	What proportion of the offspring of a cross between two heterozygous parents will exhibit the recessive condition phenotypically A. 1/4 B. 1/2 C. 3/4 D. 4/4	A
48.	A hormone secreted at IV serves to A. make the body react to emergencies B. lower blood glucose level C. raise the level of calcium ions in the blood D. facilitate the development of facial hairs	D
49.	Ovoviparity is the type of fertilization exhibited by the organism labelled A. IV B. III C. II D. I	C
50.	The correct evolutionary sequence of the organisms represented is A. IV->II->III->I B. III->II->I->IV C. II->III->IV->I D. I->III=>II->IV	A