In any food chain, the first member must be a
carnivore
herbivore
zooplankton
autotroph
Correct answer is D
No explanation has been provided for this answer.
The importance of practising crop-rotation in agriculture is to
control soil erosion
maintain the fertility of the soil
improve the nutritional value of crops
ensure growth of cash crops
Correct answer is B
No explanation has been provided for this answer.
Which of the following processes removes water from the water cycle?
Condensation
Perspiration
Photosynthesis
Transpiration
Correct answer is D
No explanation has been provided for this answer.
Blue → black → blue → brown → clear
Brown → blue → brick red → clear
Brown → violet → blue → clear
Brown → blue → violet → milky
Correct answer is B
No explanation has been provided for this answer.
Which of the following substances is contained in chloroplasts?
Starch
Sugar
Glycogen
Dextrin
Correct answer is D
No explanation has been provided for this answer.