Biology, 2008, JAMB Exam, Exam, Paper 1 | Objectives

Paper Info

Year :

2008

Title :

Biology

Exam :

JAMB Exam

Paper 1 | Objectives

21 - 30 of 50 Questions

#	Question	Ans
21.	The major consequences of bush burning in an ecosystem is A. the loss of water B. the loss of biological diversity C. a decrease in animal population D. an increase in soil fertility	B
22.	Which of the following associations is an example of mutualism A. hydra viridis and zoochlorellae B. human and lice C. shark and remora fish D. bread and rhizopus stolonifer Show Content Detailed Solution Mutualism describes a type of mutually beneficial relationship between organisms of different species. It is a symbiotic relationship in which two different species interact with and in some cases, totally rely on one another for survival. Zoochlorellae often colour their hosts green while the feeding of the hydra aids in the growth of the algae.	A
23.	In a typical freshwater habitat, the edge of the stream or pond constitutes the A. tidal zone B. intertidal zone C. littoral zone D. euphotic zone	C
24.	The main ecological problem facing intertidal organisms is A. desiccation B. floatation C. salinity D. humidity Show Content Detailed Solution Desiccation refers to the drying out of a living organism, such as when aquatic animals are taken out of water. The intertidal zones lay exposed twice daily due to tidal movements.	A
25.	Stomata of some plants are sunken and protected by hairs. These are features of A. mesophytes B. epiphytes C. hydrophytes D. xerophytes	D
26.	An ecological factor that will have the most limiting effects on the abundance of phytoplankton in a turbid pond is A. pH B. oxygen C. light D. temperature	C
27.	In an experiment to determine the percentage of air in a soil sample, the following readings were recorded: volume of water in measuring cylinder = 500 cm3 volume of soil added to water = 350 cm3 volume of water and soil after stirring = 800 cm3 the percentage of air in the soil sample is A. 6.25% B. 10.36% C. 14.28% D. 43.28% Show Content Detailed Solution Total volume of soil = 350cm³ \(\frac{50}{350} × 100\) = 14.28%	C
28.	A boy who is fond of swimming in a pond finds himself passing urine with traces of blood. He is likely to have contacted A. schistosomiasis B. onchocerciasis C. poliomyelitis D. salmonellosis	A
29.	The easiest way to establish the level of pollution in a local stream is to measure the level of A. oxygen B. carbon (IV) oxide C. ammonia D. alkalinity	A
30.	The Rhesus factor of blood was first identified in a category of A. monkeys B. human females C. human males D. chimpanzees	A

21.	The major consequences of bush burning in an ecosystem is A. the loss of water B. the loss of biological diversity C. a decrease in animal population D. an increase in soil fertility	B
22.	Which of the following associations is an example of mutualism A. hydra viridis and zoochlorellae B. human and lice C. shark and remora fish D. bread and rhizopus stolonifer Show Content Detailed Solution Mutualism describes a type of mutually beneficial relationship between organisms of different species. It is a symbiotic relationship in which two different species interact with and in some cases, totally rely on one another for survival. Zoochlorellae often colour their hosts green while the feeding of the hydra aids in the growth of the algae.	A
23.	In a typical freshwater habitat, the edge of the stream or pond constitutes the A. tidal zone B. intertidal zone C. littoral zone D. euphotic zone	C
24.	The main ecological problem facing intertidal organisms is A. desiccation B. floatation C. salinity D. humidity Show Content Detailed Solution Desiccation refers to the drying out of a living organism, such as when aquatic animals are taken out of water. The intertidal zones lay exposed twice daily due to tidal movements.	A
25.	Stomata of some plants are sunken and protected by hairs. These are features of A. mesophytes B. epiphytes C. hydrophytes D. xerophytes	D

26.	An ecological factor that will have the most limiting effects on the abundance of phytoplankton in a turbid pond is A. pH B. oxygen C. light D. temperature	C
27.	In an experiment to determine the percentage of air in a soil sample, the following readings were recorded: volume of water in measuring cylinder = 500 cm3 volume of soil added to water = 350 cm3 volume of water and soil after stirring = 800 cm3 the percentage of air in the soil sample is A. 6.25% B. 10.36% C. 14.28% D. 43.28% Show Content Detailed Solution Total volume of soil = 350cm³ \(\frac{50}{350} × 100\) = 14.28%	C
28.	A boy who is fond of swimming in a pond finds himself passing urine with traces of blood. He is likely to have contacted A. schistosomiasis B. onchocerciasis C. poliomyelitis D. salmonellosis	A
29.	The easiest way to establish the level of pollution in a local stream is to measure the level of A. oxygen B. carbon (IV) oxide C. ammonia D. alkalinity	A
30.	The Rhesus factor of blood was first identified in a category of A. monkeys B. human females C. human males D. chimpanzees	A