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.
Which of the following dental formulae represents the dentition in rabbits?
\(I\frac{2}{1}\) \(C\frac{0}{0}\) \(P\frac{3}{2}\) \(M\frac{3}{3}\)
\(I\frac{2}{2}\) \(C\frac{1}{1}\) \(P\frac{2}{2}\) \(M\frac{3}{3}\)
\(I\frac{1}{2}\) \(C\frac{0}{0}\) \(P\frac{2}{3}\) \(M\frac{3}{3}\)
\(I\frac{2}{1}\) \(C\frac{0}{1}\) \(P\frac{3}{2}\) \(M\frac{3}{3}\)
Correct answer is A
The normal dental formula of rabbits is I2/1 C0/0 P3/2 M3/3 for 28 teeth.
starch and protein only
starch and lipids
starch, peptones, and maltose
starch, protein, and lipids
Correct answer is D
These three (starch, protein, and lipids) have a process to undergo in the duodenum (the beginning of the small intestine), therefore, the surgery will affect them.
The ascent of water in tall trees is mainly due to
adhesive forces
transpiration pull
root pressure
cohesive forces
Correct answer is B
Transpiration pull or the suction force is the force which aids in drawing the water upward from roots to leaves which is used by the leaves for photosynthesis and excess is released through the stomata.
By what process is starch converted into maltose?
Hydrolysis
Condensation
Translocation
Photosynthesis
Correct answer is A
Carbohydrates are broken down into their component sugars by hydrolysis. This type of hydrolysis is called Saccharification.
One major difference between plant and animal nutrition is the ability of plants to synthesize
Food for plants and animals
Water for plants
Water for animals
Food for plants only
Correct answer is A
The food produced by plants serve as food both for the plants and animals (herbivores and in extension, all animals).