Agricultural Science Questions and Answers
A comprehensive list of Agricultural science questions with answers to help you prepare for JAMB, WAEC, NECO, Post UTME exams.
A comprehensive list of Agricultural science questions with answers to help you prepare for JAMB, WAEC, NECO, Post UTME exams.
The correct sequence in the processes of crop improvement is
Introduction → selection → breeding
Breeding → selection → introduction
Breeding → introduction → selection
Introduction → breeding → selection
Correct answer is A
The correct sequence in the process of crop improvement is Introduction → selection → breeding.
The characteristic symptoms of mosaic disease of crops is usually observed on
Roots
Leaves
Stems
Fruits
Correct answer is B
The characteristic symptoms of mosaic disease are usually observed on leaves. The disease is characterized by leaves that are mottled with yellow, white and light or dark green spots and streaks (in other words, a mosaic of colors).
Which of the weeds is dispersed by wind?
Pig weed (Boerhavia diffusa)
Goat weed (Ageratum conizoides)
Hause thorns (Acanthospermum hispidum)
Tridax (Tridax procumbeus)
Correct answer is D
Tridax procumbeus is dispersed by wind.
Gummosis disease of citrus is caused by
Aphids
Fungi
White flies
Bacteria
Correct answer is B
Gummosis disease of citrus is caused by Phytophthora fungi.
Callosobruchus maculates is a common pest of
Maize
Cowpea
Rice
Millet
Correct answer is B
Callosobruchus macualatus is a species of beetles known commonly as the cowpea weevil or cowpea seed beetle.