Biology 2024 Jamb Examination
Biology 2024 Jamb Examination
Question 61
The feeding relationship between ruminants and the bacteria in their digestive tract is
Ruminants and the bacteria in their digestive tracts exhibit a symbiotic relationship. The bacteria help digest cellulose and other complex carbohydrates, providing nutrients to the ruminant, while the bacteria receive a stable environment and nutrients from the host.
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Question 62
A photosynthetic carnivorous plant which feeds on insects is
A photosynthetic carnivorous plant that traps and digests insects is called insectivorous. While it performs photosynthesis like other plants, it supplements its nutrient intake by consuming insects.
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Question 63
Xerophytes are mostly found in the
Xerophytes are plants adapted to dry environments with limited water availability, such as deserts and arid regions. They have adaptations like thick cuticles, reduced leaves, and deep roots to conserve water.
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Question 64
In which zone of the marine habitat does the organisms require adaptation for attachment?
Organisms in the intertidal zone experience periodic exposure to air and water due to tides. They require adaptations like strong attachment structures to avoid being washed away by waves.
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Question 65
Energy transfer in plants and animals are in the form of
Adenosine triphosphate (ATP) is the primary molecule for storing and transferring energy in cells of plants and animals. DNA and RNA store genetic information, while GTP plays a smaller role in specific processes like protein synthesis.
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Question 66
The pigment carrying oxygen in the blood is
Haemoglobin is the protein pigment in red blood cells that binds and carries oxygen from the lungs to tissues. Oxyhaemoglobin is the oxygen-bound form of haemoglobin, but haemoglobin is the primary pigment responsible for oxygen transport.
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Question 67
Production of healthier offspring, viable seeds and formation of new varieties are good characteristics
Cross pollination involves the transfer of pollen from one plant to another, promoting genetic diversity. This results in healthier offspring, higher seed viability, and the potential for new varieties, unlike self-pollination which limits genetic variation.
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Question 68
One of the following is a courtship behaviour in animals
Display is a common courtship behaviour where animals exhibit visual, auditory, or chemical signals to attract mates. Fighting, hibernation, and feeding are not considered courtship behaviours.
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Question 69
In blood transfusion, a patient with group AB receives
A person with blood group AB is a universal recipient for red blood cells, meaning they can safely receive blood from all groups: O, A, B, and AB, because they have both A and B antigens and no antibodies against them.
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Question 70
A trait that is always expressed during crossing of hereditary characteristics is
A dominant trait is expressed whenever it is present in an organism's genotype, whether in homozygous (AA) or heterozygous (Aa) form. Recessive traits are only expressed in the homozygous recessive form.