Biology 2023 Jamb Examination
Biology 2023 Jamb Examination
Question 21
Behavioral adaptation for dealing with a hot climate could include
Hibernating or resting during the hottest part of the day is a behavioral adaptation called aestivation. It helps animals reduce exposure to heat stress and conserve water, allowing survival in hot climates.
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Question 22
The natural place of an organism or community is known as
A habitat is the natural place where an organism lives and grows, providing it with food, shelter, and suitable environmental conditions for survival.
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Question 23
Which process in the nutrient cycle converts atmospheric nitrogen into a form that plants can utilize?
Nitrogen fixation is carried out by certain bacteria and converts atmospheric nitrogen into ammonia or related compounds that plants can absorb and use to build proteins and nucleic acids.
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Question 24
Which of the following functions is performed by the skin to help maintain homeostasis in the human body?
The skin regulates body temperature through sweating and vasodilation or vasoconstriction, helping maintain homeostasis in response to changes in external temperature.
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Question 25
Which of the following soil types becomes less fertile due to the intense leaching caused by tropical rains?
Laterite soils are heavily leached by tropical rainfall, which washes away soluble nutrients, making the soil less fertile for agriculture without fertilization.
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Question 26
Which type of reproduction involves the fusion of gametes from two parents?
Sexual reproduction involves the fusion of male and female gametes, producing offspring with genetic variation from both parents.
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Question 27
Which processes are involved in nutrient cycling in a functioning ecosystem?
Nitrogen fixation, denitrification, and ammonification are all nitrogen cycle processes that recycle nitrogen between the atmosphere, soil, and living organisms.
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Question 28
What is autotrophic nutrition?
Autotrophic nutrition is the process by which organisms such as plants and some bacteria make their own food using sunlight (photosynthesis) or chemical energy (chemosynthesis).
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Question 29
The theory of evolution can be defined as
The theory of evolution explains that species change gradually over time through natural processes like natural selection, genetic drift, and mutation.
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Question 30
Which of the following is a male reproductive organ in humans?
The testis is the male reproductive organ that produces sperm and secretes testosterone, essential for reproduction and secondary sexual characteristics.
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In their preparation for the masquerade, David and others agreed to exercise extra caution in their dealings with Samuel because he would
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The principle that specified that the amount, when and how to pay tax should be made known to tax payer is known as
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