45
50
25
75
Correct answer is A
25% of 100 = 25 pests
∴ Number of remnants = 100 - 25 = 75 pests
40% of 75 = 30 pests
Total pest remaining = 100 - (25 + 30) = 100 - 55 = 45 pests
Dominance
Mutation
Recessiveness
Homozygosity
Correct answer is C
This condition is known as Recessiveness.
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.
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.
Root-knot disease of tomato is caused by
Virus
Nematode
Bacterium
Fungus
Correct answer is B
Root knot disease of tomato is caused by nematodes.