How well do you understand living things and their vital processes? Whether you are preparing for JAMB, WAEC, NECO and Post-UTME, these Biology past questions and answers cover such subjects as the chemistry of life, botany, evolution, genetics, ecology etc to help you know what to expect, improve your speed and confidence and be really prepared for the actual aptitude test.
Testing for a reducing sugar, the food substance is usually warmed with
sulphuric acid
million's reagent
sudan III
Benedict's solution
Correct answer is D
No explanation has been provided for this answer.
Pellagra can be prevented by consuming food rich in
vitamin A
vitamin B
Vitamin D
calcium
iodine
Correct answer is B
Pellagra is due to a lack of the vitamin niacin and/or its precursor tryptophan, an essential amino acid.
Food sources of niacin and/or tryptophan include nutritional yeast, eggs, bran, peanuts, meat, poultry, fish with red meat, cereals (especially fortified cereals), legumes, and seeds.
Niacin, also known as nicotinic acid, is an organic compound and a form of vitamin B₃, an essential human nutrient.
During which of the following processes is animal food produced?
Photosynthesis
Respiration
Nutrition
Digestion
Transportation
Correct answer is A
No explanation has been provided for this answer.
The bicuspid valve is located between the
left auricle and left ventricle
right auricle and right ventricle
left and right ventricle
left and right auricle
left auricle and right ventricle
Correct answer is A
No explanation has been provided for this answer.
Which of the following is not seen in the transverse section of a young monocotyledonous stem?
Parenchyma
Phloem
Xylem
Cambium
Sclerenchyma
Correct answer is D
No explanation has been provided for this answer.