Biology Practice Test – Plant and Animal Nutrition

In the standard experiment to show that oxygen is given off during photosynthesis, sodium bicarbonate is used to ________ (JAMB 1987)

A. neutralize the acid in water
B. supply mineral salt to water plant
C. supply carbon dioxide for photosynthesis
D. kill microorganism in water

The most important substances necessary for the maintenance of life arc carbon, oxygen ______ (JAMB 1988)

A. hydrogen, soil and enzymes
B. hydrogen, salt and water
C. nitrogen, salt and soil
D. salt, hydrogen and water

Which of the following elements is essential for the formation of haemoglobin? (JAMB 1986)

A. sodium
B. potassium
C. calcium
D. iron

Which of the following enzymes is active in the duodenum?

A. Pepsin.     B. Renin     C. Trypsin     D. Amylase

The structure that its action could result in chocking when talking and eating at the same time is _______ (WASSCE 2023)

A. epiglottis
B. oesophagus
C. liver
D. stomach