Waec Agricultural Science Questions
Question 921:
Which of the following describes the effects of excessive nitrogen application on the growth of maize plants?
- A High vegetative growth with low yield
- B High vegetative growth with high yield
- C Low vegetative growth with high yield
- D Low vegetative growth with low yield
Question 922:
Nitrogen is taken up by plant roots in the form of
- A Nitrate ion
- B Nitrite ion
- C Nitric acid
- D Nitrogen gas
Question 923:
In the process of recycling carbon in nature, carbondioxide is used by crops during
- A Respiration
- B Decomposition
- C Photosynthesis
- D Transpiration
Question 924:
Which of the following is not an effect of water-logging on crop production? it
- A Inhibits plant development
- B Encourages leaching
- C Inhibits the activities of micro organisms in the soil
- D Causes plant roots to wilt
Question 925:
When soils are poorly drained,
- A They dry up easily
- B They form hardpans
- C The air content of the soil is reduced
- D The rate of decomposition is accelerated