Which is NOT an effect of food shortage in a population?
Cannibalism
Competition
Increase in mortality
Increase in natality
migration
Correct answer is D
Food shortage could lead to any of the listed options in a bid for survival except an increase in natality rate.
Which is the most ecologically viable method of insect pest control?
Draining all stagnant pools of water
Eliminating one of the development stages of the insect
Employing a lot of labourers to physically handpick the insect pests
Erecting physical barriers against insect pests
Using stronger insecticides that can kill a greater number of insect
Correct answer is B
No explanation has been provided for this answer.
Bacteria that derive energy by oxidizing certain inorganic compounds, are said to be
Chemosynthetic
Holozoic
Parasitic
Photosynthetic
Saprophytic
Correct answer is A
No explanation has been provided for this answer.
Which part of the brain regulates and coordinates muscular movements?
Cerebellum
Cerebrum
Hypothalamus
Medulla oblongata
ThaIamus
Correct answer is A
No explanation has been provided for this answer.
Centrosome
Chromosome
Leucoplast
Lysosome
Ribosome
Correct answer is A
No explanation has been provided for this answer.