Biology 2013 Jamb Examination
Biology 2013 Jamb Examination
Question 41
Which of the following distinguishes a butterfly from a moth?
Butterflies typically have slender abdomens, while moths often have thicker, fatter abdomens. This physical difference helps in distinguishing the two groups despite some similarities in wing patterns or coloration.
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Question 42
Which of the following types of feathers is used for flight in birds?
Quill feathers, also known as flight feathers, are strong and stiff. They provide the aerodynamic surfaces necessary for lift and thrust during flight, unlike down or filoplume feathers which primarily provide insulation or sensory functions.
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Question 43
The plants that grow in deserts or very dry areas are referred to as
Xerophytes are adapted to survive in arid environments. They have structural features like reduced leaves, thick cuticles, and water-storing tissues, which minimize water loss and allow survival in extremely dry conditions.
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Question 44
Which of the following is the simplest living organism?
Viruses are considered the simplest forms of life as they are acellular, consisting only of genetic material enclosed in a protein coat. They require a host cell for replication and do not perform independent metabolic activities.
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Question 45
Proboscis is a structure that is mostly found in
Insects such as butterflies and mosquitoes possess a proboscis, a tubular feeding organ used to suck liquids like nectar or blood. It is a specialized adaptation for feeding efficiently on fluids.
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Question 46
The organ which is sensitive to light in Euglena is the
The eyespot in Euglena is a pigmented organelle that detects light intensity and direction, allowing the organism to move toward optimal light conditions for photosynthesis.
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Question 47
The organelles present in cells that are actively respiring and photosynthesizing are
Mitochondria generate ATP through respiration, while chloroplasts carry out photosynthesis to produce glucose and oxygen. Cells actively engaging in energy production require both organelles to sustain metabolism.
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Question 48
Taenia solium can be found in
Taenia solium, also known as the pork tapeworm, is parasitic in pigs. Humans may become infected by consuming undercooked pork containing cysticerci, which develop into adult tapeworms in the human intestine.
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Question 49
Which of the following describes a characteristic of arthropods?
Arthropods are characterized by a rigid exoskeleton made of chitin, segmented bodies, and paired jointed appendages. The chitinous exoskeleton provides protection, structural support, and prevents water loss in terrestrial environments.
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Question 50
Which of the following sequences is the correct arrangement of tissues in the anatomy of a young dicotyledonous stem from the inside to the outside?
In a young dicotyledonous stem, the innermost tissue is the pith, followed by xylem, then the vascular cambium, phloem, collenchyma, parenchyma, and finally the protective epidermis. This arrangement ensures structural support, conduction of water and nutrients, and protection from environmental factors.