Lianas is to tropical rain forest as an extensive root system is to _______ habitat?
A. afro-alpine B. estuarine C. freshwater D. grassland E. marine Correct Answer: Option D – grassland
Which material is NOT necessary for the manufacture of plant food?
A. carbon(iv)oxide B. chlorophyll C. oxygen D. sunlight E. water Correct Answer: Option C – oxygen
Which of the following agricultural activities has the least harmful effect on the environment?
A. application of fertilizers B. practicing crop rotation C. practicing monocropping D. spraying herbicides E. spraying pesticides Correct Answer: Option B – practicing crop rotation
When a student suddenly runs into a snake on a pathway; which of these chemical messengers are released?
A. adrenaline B. insulin C. oestrogen D. testosterone E. thyroxine Correct Answer: Option A – adrenaline
A common characteristic of ALL living things is?
A. gametogenesis B. hibernation C. photosynthesis D. phototropism E. respiration Correct Answer: Option E – E. respirationProducts
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