Which of the following substances must be present in the soil for growth of a healthy green plant?
Amino acids
Carbon
Glucose salts
Magnesium ions
Correct answer is D
No explanation has been provided for this answer.
What is the benefit of thunder and lightning to farmers?
Addition of nitrates to the soil
Aeration of the soil
Removal of harmful bacteria from the soil
Addition of rain water to the soil
Correct answer is A
No explanation has been provided for this answer.
The main raw materials required for photosynthesis are
oxygen and water
oxygen and carbon dioxide
oxygen and chlorophyll
carbon dioxide and water
Correct answer is D
No explanation has been provided for this answer.
The brightly coloured petals in some plants is an adaptive colouration for
feeding
pollination
dispersal
shedding
Correct answer is B
No explanation has been provided for this answer.
I
II
III
IV
Correct answer is B
No explanation has been provided for this answer.
WAEC Subjects
Aptitude Tests