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Biology
UTME / JAMB 2023
Cell Structure, Organization & Cell Division
Solution
The membrane around the vacuole is known as
A
Elaioplast
B
Amyloplast
C
Tonoplast
D
Cytoplast
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
The membrane around the vacuole is known as Tonoplast. The tonoplast is the cytoplasmic membrane surrounding a vacuole, separating the vacuolar contents from the cell's cytoplasm. It is also known as Vacuolar membrane.
Source: Myschool Past Questions Archive (Record #68014)
Biology
UTME / JAMB 2023
Adaptation & Evolution
Solution
Which of the following is evidence of evolution?
A
All of the above.
B
Similarities in embryonic development
C
Fossils of extinct organisms
D
Homologous structures in different species
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
All the options provided are evidence of evolution, which supports the idea that species have evolved and changed over time.
Source: Myschool Past Questions Archive (Record #68015)
Biology
UTME / JAMB 2023
Adaptation & Evolution
Solution
Which of the following is an example of an adaptation for survival in social insects?
A
Migration to warmer climates
B
Production of venom for defense
C
Formation of complex caste systems
D
Hibernation during winter months
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
Social insects, such as ants, bees, wasps, and termites, exhibit complex social structures and behaviors that contribute to their survival and success as a colony. ocial insects organize themselves into specialized groups or castes, each with specific roles and functions. These castes can include workers, soldiers, drones, and queens. This division of labor and specialization enhances the efficiency of tasks within the colony, promoting survival and reproductive success.
Source: Myschool Past Questions Archive (Record #68016)
Biology
UTME / JAMB 2023
Digestive System & Feeding Mechanisms
Solution
Which of the following is NOT a part of the alimentary canal?
A
Oesophagus
B
Large intestine
C
Liver
D
Small intestine
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
The alimentary canal, also known as the digestive tract, is a long tube that extends from the mouth to the anus and is responsible for the digestion and absorption of food. The organs that are part of the alimentary canal include the mouth, esophagus, stomach, small intestine, and large intestine. The liver produces bile, which aids in the digestion and absorption of fats, but its location is outside of the alimentary canal.
Source: Myschool Past Questions Archive (Record #68017)
Biology
UTME / JAMB 2023
Adaptation & Evolution
Solution
Which of the following is an evolutionary trend commonly observed in organisms?
A
Decreased complexity over time
B
Increased dependence on external resources
C
Increased genetic diversity within populations
D
Decreased adaptation to the environment
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
Evolutionary trends generally involve changes that occur over time in a population or species. One commonly observed trend is an increase in genetic diversity within populations. Genetic diversity refers to the variety of genetic traits and variations present within a population. Increased genetic diversity can provide a population with a greater potential to adapt to changes in the environment, as it provides a wider range of genetic material for natural selection to act upon.
Source: Myschool Past Questions Archive (Record #68018)
Biology
UTME / JAMB 2023
Cell Structure, Organization & Cell Division
Solution
Which of the following is a characteristic feature of Kingdom Plantae?
A
Presence of chloroplasts
B
Ability to perform photosynthesis
C
Lack of cell walls
D
Heterotrophic mode of nutrition
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
Kingdom Plantae is characterized by the presence of chloroplasts. Chloroplasts are the site of photosynthesis in plant cells, where light energy is converted into chemical energy. This is not to say that all organisms with chloroplasts belong to the Plantae kingdom, but it is a common feature of this kingdom.
Source: Myschool Past Questions Archive (Record #68019)
Biology
UTME / JAMB 2023
Variety of Organisms & Classification of Living Things
Solution
A biome characterized by hot summer, warm winter and treeless vegetation is
A
Steppe grasslands
B
Temperate deserts
C
Savannah grassland
D
Tropical deserts
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
A biome characterized by hot summer, warm winter and treeless vegetation is the Steppe grassland. Steppe grasslands are characterized by grassy plains without trees apart from those near rivers and lakes. The summers can be hot, sometimes 40 ^\circC (104 ^\circF) or more, but winters are cold, with temperatures often falling below freezing.
Source: Myschool Past Questions Archive (Record #68020)
Biology
UTME / JAMB 2023
Variation & Genetics (Heredity)
Solution
Which of the following is an example of physiological variation in organisms?
A
Variation in blood pressure among individuals
B
Variation in beak shape among finches
C
Differences in fur color in rabbits
D
Variation in leaf shape in plants
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
Physiological variation refers to differences in physiological traits or functions among individuals within a species. Blood pressure is a physiological parameter that can vary among individuals based on factors such as genetics, health conditions, lifestyle, and environmental influences. Physiological variation encompasses variations in functions, processes, and internal characteristics of organisms, such as metabolic rates, hormone levels, enzyme activities, blood parameters, and other physiological traits.
Source: Myschool Past Questions Archive (Record #68021)
Biology
UTME / JAMB 2023
Supporting Tissues & Skeletal System
Solution
Which of the following are components of the skeletal system in humans?
A
Cartilage and blood vessels
B
Ligaments and tendons
C
Muscles and nerves
D
Bones and joints
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
The skeletal system in humans is composed of bones and joints. Bones and joints are the primary components of the human skeletal system.
Source: Myschool Past Questions Archive (Record #68022)
Biology
UTME / JAMB 2023
Population Ecology, Habitats & Conservation
Solution
Which of the following represents an example of ecological management and conservation through a biological association?
A
Construction of a dam for hydroelectric power
B
Introduction of an invasive species for pest control
C
Clear-cutting of a forest for timber extraction
D
Establishment of marine protected areas
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
Ecological management and conservation involve strategies and practices aimed at preserving and protecting natural ecosystems and their biodiversity. Among the options provided, the establishment of marine protected areas is an example of such management and conservation through a biological association.
Establishing Marine Protected Areas (MPAs) is a vital tool for ecological management and conservation, particularly through the principles of biological association. MPAs help to safeguard marine ecosystems by controlling human activities, promoting the recovery of overexploited species, and conserving or restoring habitats and food webs. By protecting areas where species interact and depend on each other, MPAs contribute to the overall health and resilience of marine ecosystems.
Source: Myschool Past Questions Archive (Record #68023)
Biology
UTME / JAMB 2023
Cell Structure, Organization & Cell Division
Solution
The term cell was given by
A
Robert Hooke
B
Schwann
C
De Bary
D
Tatum
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
The term cell was given by Robert Hooke. The term cell was coined by Robert Hooke. Robert Hooke observed a honeycomb-like structure under the microscope while cutting a thin section of cork, hence he named the structure as a cell.
Source: Myschool Past Questions Archive (Record #68024)
Biology
UTME / JAMB 2023
Respiration & Gaseous Exchange
Solution
Which of the following is the primary organ involved in gas exchange during respiration in humans?
A
Diaphragm
B
Bronchi
C
Lungs
D
Trachea
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
The primary organ involved in gas exchange during respiration in humans is the lungs. The lungs are a pair of respiratory organs located in the chest cavity. They are responsible for the exchange of oxygen and carbon dioxide between the air and the bloodstream.
Source: Myschool Past Questions Archive (Record #68025)
Biology
UTME / JAMB 2023
Nervous, Hormonal Coordination & Sense Organs
Solution
Which gland is responsible for producing the hormone insulin?
A
Thyroid gland
B
Pituitary gland
C
Pancreas
D
Adrenal gland
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
The pancreas is an organ located in the abdomen, and it serves both digestive and endocrine functions. In terms of hormone production, the pancreas is responsible for producing insulin. Insulin plays a crucial role in regulating blood sugar levels by facilitating the uptake of glucose into cells.
Source: Myschool Past Questions Archive (Record #68026)
Biology
UTME / JAMB 2023
Adaptation & Evolution
Solution
Behavioral adaptation for dealing with a hot climate could include
A
Hibernating during the hottest part of the day
B
Large scales on the back of a lizard
C
Feeding during the hottest part of the day
D
A small kidney to conserve water
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
Estivation: Certain animals enter a state of estivation, which is similar to hibernation but occurs in response to hot and dry conditions. They become inactive, conserve energy, and reduce water loss during the hottest parts of the day or during extended periods of high temperatures.
Source: Myschool Past Questions Archive (Record #68032)
Biology
UTME / JAMB 2023
Basic Ecological Concepts, Ecosystems & Biomes
Solution
The natural place of an organism or community is known as
A
Niche
B
Habit
C
Biome
D
Habitat
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
The natural place of an organism or community is known as its habitat. A habitat is an ecological or environmental area that is inhabited by a particular species of animal, plant, or other type of organism. It is the natural environment in which an organism lives, or the physical environment that surrounds a species population.
Source: Myschool Past Questions Archive (Record #68033)