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.
The enzyme ptyalin acts on starch in the
oesophagus
large intestine
mouth
stomach
Correct answer is C
Ptyalin is secreted in the mouth. Pepsin and renin however, in the stomach.
The removal of remnant particles of digestion from the body is called
assimilation
egestion
elimination
excretion
Correct answer is B
Faeces or the waste products are expelled from the body after digestion by a process known as egestion.
White blood cells are also known as
erythrocytes
leucocytes
lymphocytes
phagocytes
Correct answer is B
Leucocytes are also knowna as white blood cells.
The following are ductless glands except
adrenal
pancreatic
parathyroid
salivary
Correct answer is D
Salivary glands are found in the mouth, which secretes a juice called saliva that contains an enzyme called ptyalin.
The vector that transmits trypanosomes is the
butterfly
housefly
mosquito
tsetse fly
Correct answer is D
The tsetse fly is the vector that transmits the trypanosomes that cause trypanosomiasis or sleeping sickness.