Waec Agricultural Science 1997 Past Questions and Answers

Question 61:

• WAEC 1997

(a) (i) Define weathering (ii) State two types of weathering
(b) Discuss briefly four factors which influence weathering

Question 62:

• WAEC 1997

(a)(i) State six uses of lime in Agriculture (ii) List four common liming materials
(b) State (i) Three examples of nitrogenous fertilizer: (ii) three examples of a phosphorous fertilizer

Question 63:

• WAEC 1997

Write short notes on four of the following: (a) deforestation (b) regeneration (c) afforestation (d) selective exploitation (e) Taungya system.

Question 64:

• WAEC 1997

(a) Define the term hybridization (b) State five aims of crop improvement. (c) Describe a monohybrid cross as explained by Mendel's Law of segregation. Illustrate your answers with clearly labelled diagrams.

Question 65:

• WAEC 1997

Differentiate between the digestive systems of the sheep and poultry. Illustrate your answers with clearly labelled diagrams.