S.5 Agric P1 Holiday Work 2020 Caltec S.5

1 S.5 HOLIDAY REVISION WORK 2020 P515/1 – PRINCIPLES & PRACTICES OF AGRICULTURE Paper One TIME : 2 Hours INSTRUCTIONS : Answer all questions. Untidy work will lead to loss of marks. SECTION A 1. When a change in price of a commodity produce only a slight change in demand, the demand for a commodity is A. elastic B. stable C. rigid D. inelastic 2. An epithelium tissue lin ing the walls of the alveoli and capillaries is A. columnar B. cuboidal C. stratified D. squaremous 3. Which of the following factors may make crop rotation inefficient in controlling crop diseases? A. Loss of soil fertility B. Absence of resistant crop variety C. Late planting of crops D. Presence of pathogen spores from previous crop 4. Sub-soiling is carried out in order to; A. mix the soil C. discourage soil erosion B. encourage soil drainage D. encourage soil erosion 5. Which one of the following factors does not cause a change in gene frequencies in a population? A. Mutation B. Migration C. Genetic drift D. Epitasis 6. Organic matter content contains the following except; A. Carbohydrates B. Fats C. Lignin D. Gravel 2 7. A soil profile with A and C horizons only A. Lacks organic matter C. is a young soil B. Lacks the present maternal D. has been eroded 8. In mitosis DNA replication and chromosome duplication occur during A. anaphase B. Metaphase C. interphone D. prophase 9. Which of the following quickens rooting in cutting? A. Ethylene dichromide C. Phosphate fertilizers B. Indole Acetic Acid D. Amino acid 10. The yellowing of leaves between their veins is a symptom of A. Water logging C. magnesium deficiency B. Nitrogen deficiency D. high soil pH 11. Which of the following rainfall characteristic is most critical for the growing of …