Biology 2013 Jamb Examination
Biology 2013 Jamb Examination
Question 31
Plants that have special devices for trapping and digesting insects are
Carnivorous plants have evolved specialized structures like pitcher traps and sticky leaves to capture insects and digest them. This adaptation helps them obtain nitrogen in nutrient-poor soils.
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Question 32
The process of transforming the chemical energy of cellular fuels into the high energy bonds of ATP in plants is
Respiration in plants breaks down glucose and other fuels to produce ATP. This process converts chemical energy stored in food into energy usable for metabolic activities and growth.
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Question 33
Fungi are referred to as heterotrophs because they
Fungi cannot perform photosynthesis because they lack chlorophyll. They obtain nutrients from organic matter, making them heterotrophic organisms dependent on other organisms for food.
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Question 34
An example of a parasitic protozoan is
Plasmodium is a parasitic protozoan responsible for causing malaria. It survives by living inside a host organism and derives nutrients at the host's expense.
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Question 35
Which blood cells are involved in the immune response of vertebrates?
Lymphocytes are white blood cells responsible for adaptive immunity. They produce antibodies and directly attack infected cells, playing a central role in defending the body against pathogens.
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Question 36
The structural adaptation of desert plants for water conservation is
Desert plants often have spiny leaves or reduced leaf surfaces to minimize water loss through transpiration. This adaptation allows them to conserve water in arid conditions.
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Question 37
The long and sharp clawed feet of birds is an adaptation for
Birds of prey have long, sharp claws, known as talons, which help them grasp and kill prey efficiently. This structural adaptation is essential for hunting and survival.
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Question 38
During the manufacture of food by plants, which of the following organisms use energy from the sun?
Anabaena is a photosynthetic cyanobacterium that captures sunlight energy to synthesize organic compounds. This process demonstrates the organism's autotrophic nature using solar energy.
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Question 39
Movement of minerals and chemical compounds within a plant occurs during
Translocation is the process of transporting sugars, amino acids, and other chemicals through the phloem from source to sink tissues, ensuring proper distribution of nutrients within the plant.
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Question 40
The enzyme that is present in the saliva is
Ptyalin, also called salivary amylase, is present in saliva and begins the digestion of starch into maltose in the mouth. It is essential for initiating carbohydrate digestion.
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