Agricultural Science 2013 Jamb Examination
Agricultural Science 2013 Jamb Examination
Question 21
A serious pest of sweet potato whose larvae destroy the foliage is
Leaf miners are larvae that burrow into leaves of sweet potato, causing destruction to foliage and reducing photosynthetic capacity.
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Question 22
The fertility of soils under forest is sustained mainly by
Nutrient recycling from decaying organic matter, such as leaves and plant residues, is the main factor sustaining soil fertility in forests.
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Question 23
The Mendelian law of segregation states that the characteristics which is hidden in an F1, reappears in F2 generation in a ratio
According to Mendel's law of segregation, a hidden (recessive) trait in F1 generation appears in F2 in a ratio of 3:1 for dominant to recessive traits.
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Question 24
The breed of sheep that can be found throughout Nigeria is
Yankasa is a widely distributed breed of sheep throughout Nigeria, known for its adaptability and productivity.
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Question 25
A female cattle which has not had a calf or developed into the mature form of a cow is referred to as
A heifer is a young female cow that has not yet borne a calf.
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Question 26
Which of the following farm animals is considered as monogastric?
Monogastric animals have a single-chambered stomach. Pigs are monogastric, whereas goats, cows, and sheep are ruminants with multi-chambered stomachs.
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Question 27
The process of mating in poultry is referred to as
Treading is the correct term for mating in poultry, where the male transfers sperm to the female.
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Question 28
In farm animals, a sign of heat includes
One observable sign of heat (estrus) in female farm animals is secretions from the vulva, indicating readiness to mate.
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Question 29
The anti-sterility vitamin in livestock nutrition is
Vitamin E is essential in livestock nutrition to prevent sterility and support reproductive health.
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Question 30
The relative humidity in an incubator is usually set at
For proper incubation, the relative humidity is typically maintained at 40% - 60% to ensure egg viability and reduce dehydration.
