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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.2An 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.3Air, water, and soil are categories of:
A. Resources
B. Biomes
C. Pollution
D. Habitats
Air, water, and soil are categories of:
A. Resources
B. Biomes
C. Pollution
D. Habitats
Correct Answer: option c
Further reading: Pollution
Show explanation
Pollution is categorized into air, water, and soil pollution
Q.4Which of the following is a medium of transportation in a multicellular animal?
A. Cell sap
B. Cytoplasm
C. Blood
D. Turgor pressure
Which of the following is a medium of transportation in a multicellular animal?
A. Cell sap
B. Cytoplasm
C. Blood
D. Turgor pressure
Correct Answer: option c
Further reading: Media of Transportation
Show explanation
Blood is a medium of transportation in organisms, along with cytoplasm, cell sap, and lymph.
Q.5Which of these endocrine glands is responsible for producing hormones that regulate blood sugar levels?
A. Pituitary
B. Adrenal gland
C. Pancreas
D. Thyroid
Which of these endocrine glands is responsible for producing hormones that regulate blood sugar levels?
A. Pituitary
B. Adrenal gland
C. Pancreas
D. Thyroid
Correct Answer: option b
Further reading: Hormonal Control (Animals)
Show explanation
The pancreas is an endocrine gland that produces hormones that regulate the levels of materials inside the body
Q.6Warning 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.7Which of the following is an example of a voluntary action?
A. Blinking of the eyes
B. Knee jerk
C. Salivation
D. Swimming
Which of the following is an example of a voluntary action?
A. Blinking of the eyes
B. Knee jerk
C. Salivation
D. Swimming
Correct Answer: option d
Further reading: Reflex Actions
Show explanation
Swimming is a conditioned reflex, a type of voluntary action, while blinking of the eyes, knee jerk, and salivation are reflexes
Q.8The 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.9Population 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.10A disease that is commonly transmissible and endemic in some regions, whose spread is favored by ecological conditions, is:
A. AIDS
B. Polio
C. Malaria
D. Syphilis
A disease that is commonly transmissible and endemic in some regions, whose spread is favored by ecological conditions, is:
A. AIDS
B. Polio
C. Malaria
D. Syphilis
Correct Answer: option c
Further reading: Diseases
Show explanation
Malaria is listed as a common endemic and potentially epidemic disease whose spread is favored by ecological conditions
Q.11Which of the following is an example of a non-heritable character?
A. Eye colour
B. Height
C. Tattoo
D. Blood group
Which of the following is an example of a non-heritable character?
A. Eye colour
B. Height
C. Tattoo
D. Blood group
Correct Answer: option c
Further reading: Heredity
Show explanation
Candidates are expected to determine heritable and non-heritable characters. A tattoo is an acquired trait and not a heritable character
Q.12The 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.13Which of these plants belongs to the Pteridophyta?
A. Spirogyra
B. Brachmenium
C. Cycads
D. Dryopteris
Which of these plants belongs to the Pteridophyta?
A. Spirogyra
B. Brachmenium
C. Cycads
D. Dryopteris
Correct Answer: option d
Further reading: Plantae (Pteridophyta)
Show explanation
Pteridophyta are ferns, and Dryopteris is an example of this group.
Q.14A digestive enzyme's general characteristic is that it:
A. Is digested along with the food
B. Is specific to a class of food substance
C. Works at a wide range of temperatures
D. Speeds up the digestion process without being affected
A digestive enzyme's general characteristic is that it:
A. Is digested along with the food
B. Is specific to a class of food substance
C. Works at a wide range of temperatures
D. Speeds up the digestion process without being affected
Correct Answer: option b
Further reading: Digestive Enzymes
Show explanation
Enzymes are associated with the digestion of specific classes of food, such as carbohydrates, proteins, and fats
Q.15Which of the following is an accessory organ of the mammalian alimentary canal?
A. Stomach
B. Pancreas
C. Small intestine
D. Oesophagus
Which of the following is an accessory organ of the mammalian alimentary canal?
A. Stomach
B. Pancreas
C. Small intestine
D. Oesophagus
Correct Answer: option b
Further reading: Mammalian Alimentary Canal
Show explanation
The pancreas, liver, and gall bladder are accessory organs of the alimentary canal
Q.16A mangrove swamp is an example of what type of natural habitat?
A. Terrestrial habitat
B. Aquatic habitat
C. Arboreal habitat
D. Savannah
A mangrove swamp is an example of what type of natural habitat?
A. Terrestrial habitat
B. Aquatic habitat
C. Arboreal habitat
D. Savannah
Correct Answer: option b
Further reading: Natural Habitats
Show explanation
Ponds, streams, lakes, seashores, and mangrove swamps are examples of aquatic habitats
Q.17The 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.18A variation that is not influenced by environmental conditions is a:
A. Continuous variation
B. Discontinuous variation
C. Physiological variation
D. Morphological variation
A variation that is not influenced by environmental conditions is a:
A. Continuous variation
B. Discontinuous variation
C. Physiological variation
D. Morphological variation
Correct Answer: option b
Further reading: Variation
Show explanation
Candidates should be able to differentiate between continuous and discontinuous variations, and relate the role of environmental conditions to variation. Discontinuous variation is not typically influenced by the environment.
Q.19An 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.20An 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