Waec Agricultural Science Questions
Question 546:
Biological control of insect pests of crops can best be carried out through
- A Crop rotation
- B Use of parasites and predators
- C Soil fumigation
- D Farm sanitation
- E Use of resistance varieties
Question 547:
The aims of crop improvement include the following except
- A Increasing yields
- B Meeting particular needs of growers
- C Meeting the needs of consumers
- D Adapting to climatic conditions
- E Reducing demand for a particular type of crop
Question 548:
The chromosomes in a cell are located in the
- A Cell wall
- B Golgi body
- C Vacuole
- D Nucleus
- E Mitochondrion
Question 549:
A great disadvantage of introduction as a method of crop improvement is the
- A Adaptation of introduced crop to a new area of cultivation
- B Usefulness of an introduced crop as basis for a breeding programme
- C Incorporation of the desirable characteristics of the introduced crop into the local corp
- D Introduction of a new type of disease into a new area of cultivation
- E Integration of the introduced variety into the agricultural production of a new area
Question 550:
Which of the following structures does not serve a protective function?
- A Hoof
- B Skin
- C Feathers
- D Bone
- E Hair