Biology, 1991, JAMB Exam, Exam, Paper 1 | Objectives

Paper Info

Year :

1991

Title :

Biology

Exam :

JAMB Exam

Paper 1 | Objectives

11 - 20 of 50 Questions

#	Question	Ans
11.	The function of maxillipeds in crayfish is to aid A. walking B. swimming C. feeding D. respiration	C
12.	The respiratory organ in the land snail is the A. radula B. mantle C. tentacle D. foot Show Content Detailed Solution The mantle is also known by the Latin word pallium (adj. pallial). Snails originally breathe by gills situated in the pallial cavity.	B
13.	The gill raker of fishes take part in? A. feeding B. respiration C. swimming D. diffusion Show Content Detailed Solution In fish with carnivorous feeding habits, the gill raker are long, hard and pointed, constituting an adaptation to protect the gills, prevent the escape of the prey and assist in swallowing.	A
14.	A wide pith with a ring of conducting tissue is characteristic of the root of A. sunflower B. maize C. bean D. okra	B
15.	Which of the following is formed immediately after the first product of photosynthesis? A. Lipid B. Starch C. Oxygen D. Sugar	B
16.	One of the accessory organs of the digestive system is the A. Kidney B. Spleen C. liver D. lung	C
17.	The element common to protein carbohydrate and lipid is A. hydrogen B. sulphur C. nitrogen D. phosphorus	A
18.	The crown of the mammalian tooth is covered with A. cement B. dentine C. caries D. enamel	D
19.	In the living cells, insufficient oxygen may cause a breakdown of glucose into? A. fatty acids B. lactic acids C. glycogen D. carbon dioxide Show Content Detailed Solution Breakdown of glucose in the absence of oxygen is referred to as Anaerobic respiration. For some organisms, such as yeast, the end product is ethanol, while in others such as human muscle cells, the end product is lactic acid.	B
20.	Which of the following can bring about the greatest increase in the rate of transpiration? A. Increased humidity B. Reduced temperature C. Reduced wind speed D. Reduced humidity Show Content Detailed Solution Relative humidity: As the relative humidity of the air surrounding the plant rises the transpiration rate falls. It is easier for water to evaporate into dryer air than into more saturated air.	D

11.	The function of maxillipeds in crayfish is to aid A. walking B. swimming C. feeding D. respiration	C
12.	The respiratory organ in the land snail is the A. radula B. mantle C. tentacle D. foot Show Content Detailed Solution The mantle is also known by the Latin word pallium (adj. pallial). Snails originally breathe by gills situated in the pallial cavity.	B
13.	The gill raker of fishes take part in? A. feeding B. respiration C. swimming D. diffusion Show Content Detailed Solution In fish with carnivorous feeding habits, the gill raker are long, hard and pointed, constituting an adaptation to protect the gills, prevent the escape of the prey and assist in swallowing.	A
14.	A wide pith with a ring of conducting tissue is characteristic of the root of A. sunflower B. maize C. bean D. okra	B
15.	Which of the following is formed immediately after the first product of photosynthesis? A. Lipid B. Starch C. Oxygen D. Sugar	B

16.	One of the accessory organs of the digestive system is the A. Kidney B. Spleen C. liver D. lung	C
17.	The element common to protein carbohydrate and lipid is A. hydrogen B. sulphur C. nitrogen D. phosphorus	A
18.	The crown of the mammalian tooth is covered with A. cement B. dentine C. caries D. enamel	D
19.	In the living cells, insufficient oxygen may cause a breakdown of glucose into? A. fatty acids B. lactic acids C. glycogen D. carbon dioxide Show Content Detailed Solution Breakdown of glucose in the absence of oxygen is referred to as Anaerobic respiration. For some organisms, such as yeast, the end product is ethanol, while in others such as human muscle cells, the end product is lactic acid.	B
20.	Which of the following can bring about the greatest increase in the rate of transpiration? A. Increased humidity B. Reduced temperature C. Reduced wind speed D. Reduced humidity Show Content Detailed Solution Relative humidity: As the relative humidity of the air surrounding the plant rises the transpiration rate falls. It is easier for water to evaporate into dryer air than into more saturated air.	D