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

Paper Info

Year :

2019

Title :

Biology

Exam :

JAMB Exam

Paper 1 | Objectives

31 - 40 of 80 Questions

#	Question	Ans
31.	Rabbits cannot survive in an aquatic habitat because they have A. fore and hind limbs B. no gills C. no fins D. no scales Show Content Detailed Solution Rabbits does not have the adaptive features of an aquatic habitat like gills therefore, it cannot survive in an aquatic habitat. There is an explanation video available below.	B
32.	Which of the following substances pass through the root cell membrane by osmosis? A. Ceil sap B. Carbon dioxide C. Oxygen D. Water Show Content Detailed Solution Water passes through the root cell membrane of plant in order for osmosis to take place. There is an explanation video available below.	D
33.	Trees in Savanna habitats usually have thick bark which mainly. A. Reduces the rate of transpiration B. Protect them from scorching sun C. Protect them from heavy winds D. Resist bush fires Show Content Detailed Solution Rate of transpiration is reduced in savannah forest due to thick barks of the trees in savannah forest. There is an explanation video available below.	A
34.	Competition among individuals of a population increases the A. Number of organisms B. Availability of nutrient supplied C. Survival of the fittest D. Enlargement of the territory Show Content Detailed Solution Competition one of the biotic factors in ecological factors involves the interactions among two organisms of the same species/different species which outgrows the other and survives while the other cannot grow or survive There is an explanation video available below.	C
35.	In natural selection, Darwin proposed that evolution occurred because of the following conditions except A. that nature selects those that will survive to reproduce their kind B. there is a fierce competition among the offspring C. that the weaker offspring are eliminated D. food and other needs are abundant Show Content Detailed Solution In natural selection, Darwin proposed that evolution occurred because of the following conditions except food and other needs are abundant There is an explanation video available below.	D
36.	Which of the following substances has the highest amount of energy in joules per unit weight? A. Carbohydrates B. Fats C. Proteins D. Vitamins Show Content Detailed Solution Fats provides more energy to animal than carbohydrates therefore containing the highest amount of energy in joules per unit weight. There is an explanation video available below.	B
37.	Which of the following pairs of scientists discovered the Rhesus factor in human blood? A. Hooke and Lavine B. Darwin and Landsteiner C. Landsteiner and Lavine D. Hooke and Darwin Show Content Detailed Solution Landsteiner and Lavine are scientist, they discovered the Rhesus factor in human blood. There is an explanation video available below.	C
38.	The study of an individual organism or a single species of organism and its environment is A. Autecology B. Ecological concepts C. Synecology D. Biotic composers Show Content Detailed Solution Autecology is the study of an individual organism or a single specie of organism and no environment There is an explanation video available below.	A
39.	Which of the following is a nitrifying bacterium? A. Rhizobium B. Nictrobacter C. Azotobacter D. Pseudomonas Show Content Detailed Solution Nitrobacter are chemoautrophic organisms found in soil and water responsible for the oxidation of ammonium to nitrite and nitrite to nitrate. There is an explanation video available below.	B
40.	Which of the following is the effect of using artificial pollination in plant breeding? A. Production of healthy crops B. Lengthening the maturity time of crops C. Making crops susceptible to disease D. Improvement of the variety of crops Show Content Detailed Solution One of the effect of using artificial pollination in plant breeding is that it improves the variety of crops. There is an explanation video available below.	D

31.	Rabbits cannot survive in an aquatic habitat because they have A. fore and hind limbs B. no gills C. no fins D. no scales Show Content Detailed Solution Rabbits does not have the adaptive features of an aquatic habitat like gills therefore, it cannot survive in an aquatic habitat. There is an explanation video available below.	B
32.	Which of the following substances pass through the root cell membrane by osmosis? A. Ceil sap B. Carbon dioxide C. Oxygen D. Water Show Content Detailed Solution Water passes through the root cell membrane of plant in order for osmosis to take place. There is an explanation video available below.	D
33.	Trees in Savanna habitats usually have thick bark which mainly. A. Reduces the rate of transpiration B. Protect them from scorching sun C. Protect them from heavy winds D. Resist bush fires Show Content Detailed Solution Rate of transpiration is reduced in savannah forest due to thick barks of the trees in savannah forest. There is an explanation video available below.	A
34.	Competition among individuals of a population increases the A. Number of organisms B. Availability of nutrient supplied C. Survival of the fittest D. Enlargement of the territory Show Content Detailed Solution Competition one of the biotic factors in ecological factors involves the interactions among two organisms of the same species/different species which outgrows the other and survives while the other cannot grow or survive There is an explanation video available below.	C
35.	In natural selection, Darwin proposed that evolution occurred because of the following conditions except A. that nature selects those that will survive to reproduce their kind B. there is a fierce competition among the offspring C. that the weaker offspring are eliminated D. food and other needs are abundant Show Content Detailed Solution In natural selection, Darwin proposed that evolution occurred because of the following conditions except food and other needs are abundant There is an explanation video available below.	D

36.	Which of the following substances has the highest amount of energy in joules per unit weight? A. Carbohydrates B. Fats C. Proteins D. Vitamins Show Content Detailed Solution Fats provides more energy to animal than carbohydrates therefore containing the highest amount of energy in joules per unit weight. There is an explanation video available below.	B
37.	Which of the following pairs of scientists discovered the Rhesus factor in human blood? A. Hooke and Lavine B. Darwin and Landsteiner C. Landsteiner and Lavine D. Hooke and Darwin Show Content Detailed Solution Landsteiner and Lavine are scientist, they discovered the Rhesus factor in human blood. There is an explanation video available below.	C
38.	The study of an individual organism or a single species of organism and its environment is A. Autecology B. Ecological concepts C. Synecology D. Biotic composers Show Content Detailed Solution Autecology is the study of an individual organism or a single specie of organism and no environment There is an explanation video available below.	A
39.	Which of the following is a nitrifying bacterium? A. Rhizobium B. Nictrobacter C. Azotobacter D. Pseudomonas Show Content Detailed Solution Nitrobacter are chemoautrophic organisms found in soil and water responsible for the oxidation of ammonium to nitrite and nitrite to nitrate. There is an explanation video available below.	B
40.	Which of the following is the effect of using artificial pollination in plant breeding? A. Production of healthy crops B. Lengthening the maturity time of crops C. Making crops susceptible to disease D. Improvement of the variety of crops Show Content Detailed Solution One of the effect of using artificial pollination in plant breeding is that it improves the variety of crops. There is an explanation video available below.	D

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