Biology, 2019, JAMB Exam, Exam, Paper 1 | Objectives

Paper Info

Year :

2019

Title :

Biology

Exam :

JAMB Exam

Paper 1 | Objectives

61 - 70 of 80 Questions

#	Question	Ans
61.	The association between two organisms living together in which only one benefits from the association while the other is neither benefited nor harmed is A. Predation B. Competition C. Commensalism D. Dispersal Show Content Detailed Solution Commensalism is the association between 2 organisms living together in which only one benefits from the association while the other is neither benefited nor harmed e.g Ramora fish and shark. Commensalism is an example of symbiotic Association. There is an explanation video available below.	C
62.	Which of the following will have the least effect on the rate of change of the numbers in a population A. Mutation B. Food Supply C. Disease D. Predation Show Content Detailed Solution Mutation involves the changes in the gene resulting in an inheritable character, therefore not having effect on the rate of change of the numbers in a population. There is an explanation video available below.	A
63.	Which of the following controls all voluntary actions A. Olfactory lobes B. Cerebrum C. Hypothalamus D. Pons varolii Show Content Detailed Solution Cerebrum is the largest part of the brain and it controls all voluntary actions like speech, dancing etc and also concerned with the concentration and co-ordination of impulses. There is an explanation video available below.	B
64.	Which of the following statement describes an autonomic nervous system A. It always stimulates effectors B. Activities are voluntary C. It dials with external stimuli and their responses D. It affects glands, cardia muscles and smooth muscles Show Content Detailed Solution Autonomic nervous system is concerned with the control of the body's involuntary activities e.g breathing, heartbeat, digestion etc There is an explanation video available below.	D
65.	The glomerular filtrate contains the following except A. Water B. Urea C. Blood Corpuscles D. Glucose Show Content Detailed Solution The glomerulus helps in the mechanism of excretion (formation of urine) in mammals. It does not contain the blood corpuscles. There is an explanation video available below.	C
66.	One of the following is not the theory of natural selection stated by Charles Dawin A. Characteristics acquired through use or disuse are transmitted offspring B. Variations appear by themselves in a population C. Heredity variations are transmitted to offspring D. Species that are the fittest for the environment contribute more offsprings to the next needs of the generation Show Content Detailed Solution Charles Darwins theory is that of natural selection not of use and disuse There is an explanation video available below.	A
67.	Ecology is best defined as the study of A. The characteristics of an environment B. The inter-relationship between living organisms and the environment C. Living organisms in a particular area D. The habitats and wild life Show Content Detailed Solution Ecology is best defined as the study of the inter-relationship between living organisms and the environment. There is an explanation video available below.	B
68.	The following processes are involved during expiration in man except A. The inter costal muscles relax B. The thoracic cavity first increases in volume C. The sternum moves inward D. The ribs are moved downwards and inwards Show Content Detailed Solution During respiration process in man under expiration process the thoracic cavity does not increase in volume There is an explanation video available below.	B
69.	Which of the following is an example of continous variation? A. Human blood groups B. Sex difference in human C. Haemoglobin types D. Height in humans Show Content Detailed Solution Continuous variations are variations which change gradually within a population e.g height in humans. There is an explanation video available below.	D
70.	One of the following is an effect of clay soil on vegetation A. Supports luxuriant vegetation such as forest B. Supports scanty vegetation C. Does not support light vegetation D. Support arid vegetation Show Content Detailed Solution Clay soil's effect on vegetation is that it supports light vegetation such as forest and luxuriant vegetation. There is an explanation video available below.	A

61.	The association between two organisms living together in which only one benefits from the association while the other is neither benefited nor harmed is A. Predation B. Competition C. Commensalism D. Dispersal Show Content Detailed Solution Commensalism is the association between 2 organisms living together in which only one benefits from the association while the other is neither benefited nor harmed e.g Ramora fish and shark. Commensalism is an example of symbiotic Association. There is an explanation video available below.	C
62.	Which of the following will have the least effect on the rate of change of the numbers in a population A. Mutation B. Food Supply C. Disease D. Predation Show Content Detailed Solution Mutation involves the changes in the gene resulting in an inheritable character, therefore not having effect on the rate of change of the numbers in a population. There is an explanation video available below.	A
63.	Which of the following controls all voluntary actions A. Olfactory lobes B. Cerebrum C. Hypothalamus D. Pons varolii Show Content Detailed Solution Cerebrum is the largest part of the brain and it controls all voluntary actions like speech, dancing etc and also concerned with the concentration and co-ordination of impulses. There is an explanation video available below.	B
64.	Which of the following statement describes an autonomic nervous system A. It always stimulates effectors B. Activities are voluntary C. It dials with external stimuli and their responses D. It affects glands, cardia muscles and smooth muscles Show Content Detailed Solution Autonomic nervous system is concerned with the control of the body's involuntary activities e.g breathing, heartbeat, digestion etc There is an explanation video available below.	D
65.	The glomerular filtrate contains the following except A. Water B. Urea C. Blood Corpuscles D. Glucose Show Content Detailed Solution The glomerulus helps in the mechanism of excretion (formation of urine) in mammals. It does not contain the blood corpuscles. There is an explanation video available below.	C

66.	One of the following is not the theory of natural selection stated by Charles Dawin A. Characteristics acquired through use or disuse are transmitted offspring B. Variations appear by themselves in a population C. Heredity variations are transmitted to offspring D. Species that are the fittest for the environment contribute more offsprings to the next needs of the generation Show Content Detailed Solution Charles Darwins theory is that of natural selection not of use and disuse There is an explanation video available below.	A
67.	Ecology is best defined as the study of A. The characteristics of an environment B. The inter-relationship between living organisms and the environment C. Living organisms in a particular area D. The habitats and wild life Show Content Detailed Solution Ecology is best defined as the study of the inter-relationship between living organisms and the environment. There is an explanation video available below.	B
68.	The following processes are involved during expiration in man except A. The inter costal muscles relax B. The thoracic cavity first increases in volume C. The sternum moves inward D. The ribs are moved downwards and inwards Show Content Detailed Solution During respiration process in man under expiration process the thoracic cavity does not increase in volume There is an explanation video available below.	B
69.	Which of the following is an example of continous variation? A. Human blood groups B. Sex difference in human C. Haemoglobin types D. Height in humans Show Content Detailed Solution Continuous variations are variations which change gradually within a population e.g height in humans. There is an explanation video available below.	D
70.	One of the following is an effect of clay soil on vegetation A. Supports luxuriant vegetation such as forest B. Supports scanty vegetation C. Does not support light vegetation D. Support arid vegetation Show Content Detailed Solution Clay soil's effect on vegetation is that it supports light vegetation such as forest and luxuriant vegetation. There is an explanation video available below.	A

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