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Free JAMB Past Question for biology
Q.1The practice of using methods like contour ridging and terracing is aimed at:
A. Increasing soil porosity
B. Renewing and maintaining soil fertility
C. Conserving natural resources
D. Preventing desertification
The practice of using methods like contour ridging and terracing is aimed at:
A. Increasing soil porosity
B. Renewing and maintaining soil fertility
C. Conserving natural resources
D. Preventing desertification
Correct Answer: option d
Further reading: Conservation
Show explanation
The benefits of conserving natural resources include the prevention of desertification
Q.2The adaptations for obtaining food are examined in the mouth-parts of insects such as the:
Options:
A. Stick insect
B. Praying mantis
C. Butterfly
D. Toad
The adaptations for obtaining food are examined in the mouth-parts of insects such as the:
Options:
A. Stick insect
B. Praying mantis
C. Butterfly
D. Toad
Correct Answer: option c
Further reading: Adaptations for Obtaining Food
Show explanation
The mouthparts of insects, especially the mosquito, butterfly, and moth, are structural adaptations for obtaining food
Q.3The process of succession that begins in an area where no previous community existed is called:
A. Secondary succession
B. Primary succession
C. Climax community
D. Population growth
The process of succession that begins in an area where no previous community existed is called:
A. Secondary succession
B. Primary succession
C. Climax community
D. Population growth
Correct Answer: option b
Further reading: Ecological Succession
Show explanation
Primary succession is a type of ecological succession. It describes the sequence of change in an environment with no previous life.
Q.4An invertebrate belonging to the phylum Arthropoda is:
A. Hydra
B. Earthworm
C. Snail
D. Cockroach
An invertebrate belonging to the phylum Arthropoda is:
A. Hydra
B. Earthworm
C. Snail
D. Cockroach
Correct Answer: option d
Further reading: Animalia (Arthropoda)
Show explanation
Cockroaches, along with mosquitoes, houseflies, bees, and butterflies, are listed as examples of Arthropoda
Q.5Evidence for evolution can be provided by:
A. Genetic studies and mutation
B. Breeding of new varieties
C. Application of recombinant DNA
D. Fossil records
Evidence for evolution can be provided by:
A. Genetic studies and mutation
B. Breeding of new varieties
C. Application of recombinant DNA
D. Fossil records
Correct Answer: option d
Further reading: Evidence of Evolution
Show explanation
Fossil records, comparative anatomy, physiology, and embryology are provided as evidence for evolution
Q.6An organism that carries out autotrophic nutrition is a:
A. Sheep
B. Roundworm
C. Sundew plant
D. Rhizopus
An organism that carries out autotrophic nutrition is a:
A. Sheep
B. Roundworm
C. Sundew plant
D. Rhizopus
Correct Answer: option c
Further reading: Modes of Nutrition
Show explanation
The sundew plant is an example of a carnivorous plant, a type of autotroph. Holozoic nutrition is seen in sheep, parasitic in roundworms, and saprophytic in Rhizopus.
Q.7An experiment to demonstrate the necessity of photosynthesis would test for the presence of:
A. Carbon (IV) oxide
B. Oxygen
C. Chlorophyll
D. Starch
An experiment to demonstrate the necessity of photosynthesis would test for the presence of:
A. Carbon (IV) oxide
B. Oxygen
C. Chlorophyll
D. Starch
Correct Answer: option d
Further reading: Photosynthesis Requirements
Show explanation
Detecting the presence of starch in a leaf is an evidence of photosynthesis
Q.8The mechanism of transportation involving the movement of water across a semi-permeable membrane is known as:
A. Diffusion
B. Plasmolysis
C. Osmosis
D. Turgidity
The mechanism of transportation involving the movement of water across a semi-permeable membrane is known as:
A. Diffusion
B. Plasmolysis
C. Osmosis
D. Turgidity
Correct Answer: option c
Further reading: Mechanisms of Transportation
Show explanation
Osmosis is described as a mechanism of transportation in organisms, along with diffusion, plasmolysis, and turgidity
Q.9The chemical process of glycolysis and the Kreb's cycle, which are part of respiration, are linked by the role of:
A. Carbon dioxide
B. Oxygen
C. ATP
D. Lactic acid
The chemical process of glycolysis and the Kreb's cycle, which are part of respiration, are linked by the role of:
A. Carbon dioxide
B. Oxygen
C. ATP
D. Lactic acid
Correct Answer: option c
Further reading: Respiration
Show explanation
The significance of respiration is examined with reference to the role of ATP in glycolysis and the Kreb's cycle
Q.10Warning coloration is a specific type of adaptive coloration. It is demonstrated by:
A. Snakes
B. Fish
C. Toads
D. Mushrooms
Warning coloration is a specific type of adaptive coloration. It is demonstrated by:
A. Snakes
B. Fish
C. Toads
D. Mushrooms
Correct Answer: option d
Further reading: Adaptive Coloration
Show explanation
Warning coloration is categorized in mushrooms, while countershading is seen in fish, toads, and snakes
Q.11Which of the following factors contributes to the loss of soil fertility?
A. Crop rotation
B. Use of organic fertilizers
C. Leaching
D. Terracing
Which of the following factors contributes to the loss of soil fertility?
A. Crop rotation
B. Use of organic fertilizers
C. Leaching
D. Terracing
Correct Answer: option c
Further reading: Loss of Soil Fertility
Show explanation
Factors such as leaching, erosion of the topsoil, and repeated cropping with one variety contribute to the loss of soil fertility
Q.12The process of transmission of hereditary characters from parents to offspring is accounted for by the segregation of genes at meiosis and their recombination at:
A. Mitosis
B. Fertilization
C. Transcription
D. Replication
The process of transmission of hereditary characters from parents to offspring is accounted for by the segregation of genes at meiosis and their recombination at:
A. Mitosis
B. Fertilization
C. Transcription
D. Replication
Correct Answer: option b
Further reading: Chromosomes and Heredity
Show explanation
The transmission of hereditary characters from parents to offspring occurs through the segregation of genes at meiosis and the recombination of genes at fertilization
Q.13The physical properties of soil types are identified based on the measurement of particle size, porosity, or:
A. Organic content
B. Water retention ability
C. Soil air
D. Mineral content
The physical properties of soil types are identified based on the measurement of particle size, porosity, or:
A. Organic content
B. Water retention ability
C. Soil air
D. Mineral content
Correct Answer: option b
Further reading: Soil Types
Show explanation
Physical properties of soil types are identified based on measurements of particle size, porosity, or water retention ability
Q.14A sex-linked character mentioned in the syllabus is:
A. Tongue rolling
B. Phenylthiocarbamide (PTC) taste
C. Haemophilia
D. Fingerprints
A sex-linked character mentioned in the syllabus is:
A. Tongue rolling
B. Phenylthiocarbamide (PTC) taste
C. Haemophilia
D. Fingerprints
Correct Answer: option c
Further reading: Sex-linked Characters
Show explanation
Haemophilia, along with baldness and color blindness, is listed as a sex-linked character
Q.15The part of the mammalian circulatory system that carries blood away from the heart is the:
A. Vein
B. Capillary
C. Artery
D. Aorta
The part of the mammalian circulatory system that carries blood away from the heart is the:
A. Vein
B. Capillary
C. Artery
D. Aorta
Correct Answer: option c
Further reading: Channels for Transportation
Show explanation
The mammalian circulatory system includes arteries, which carry blood away from the heart. The aorta is a major artery, while veins carry blood towards the heart.
Q.16Population density is defined as:
A. The total number of organisms in a habitat
B. The number of organisms per unit area
C. The number of births per year
D. The number of deaths per year
Population density is defined as:
A. The total number of organisms in a habitat
B. The number of organisms per unit area
C. The number of births per year
D. The number of deaths per year
Correct Answer: option b
Further reading: Population Density
Show explanation
Population density is defined as the number of organisms per unit area
Q.17The application of discontinuous variation is useful in:
A. Measuring height and weight
B. Crime detection
C. Observing colour patterns
D. Plotting frequency distribution graphs
The application of discontinuous variation is useful in:
A. Measuring height and weight
B. Crime detection
C. Observing colour patterns
D. Plotting frequency distribution graphs
Correct Answer: option b
Further reading: Application of Discontinuous Variation
Show explanation
Discontinuous variation can be used in crime detection
Q.18The respiratory surface in an earthworm is the:
A. Gill
B. Body surface
C. Trachea
D. Stomata
The respiratory surface in an earthworm is the:
A. Gill
B. Body surface
C. Trachea
D. Stomata
Correct Answer: option b
Further reading: Respiratory Organs and Surfaces
Show explanation
The body surface is a respiratory organ, along with gills, tracheae, lungs, stomata, and lenticels. Earthworms use their body surface for gas exchange.
Q.19Which of the following cycles is a type of nutrient cycling in nature?
A. Sulphur cycle
B. Phosphorus cycle
C. Carbon cycle
D. Oxygen cycle
Which of the following cycles is a type of nutrient cycling in nature?
A. Sulphur cycle
B. Phosphorus cycle
C. Carbon cycle
D. Oxygen cycle
Correct Answer: option c
Further reading: Nutrient Cycling
Show explanation
The carbon, water, and nitrogen cycles are listed under nutrient cycling in nature
Q.20Which of the following is a member of the class Reptilia?
A. Toad
B. Lizard
C. Bird
D. Frog
Which of the following is a member of the class Reptilia?
A. Toad
B. Lizard
C. Bird
D. Frog
Correct Answer: option b
Further reading: Animalia (Vertebrates)
Show explanation
Lizards, snakes, and turtles are examples of Reptilia