Waec Model Questions Vol1 2017 Agricultural Science Question 2

Practice essay / theory question 2 from the 2017 Waec Model Questions Vol1 Agricultural Science examination. This question covers Soil Science, Soil Chemistry, Experimental Design .

Waec Model Questions Vol1 2017 Agricultural Science Essay / Theory
Topics: Soil Science Soil Chemistry Experimental Design
Question 2 WAEC_MODEL_QUESTIONS_VOL1 • 2017 • AGRICULTURAL_SCIENCE • essay

A soil‑science practical is set up to investigate the effect of organic manure on soil pH over a four‑week period. The experimental arrangement consists of three identical pots (A, B and C) placed on a bench. Each pot is filled with the same amount of loamy soil. Pot A receives no manure, Pot B receives 50 g of well‑decomposed organic manure, and Pot C receives 100 g of the same manure. Each pot will be watered with 2 L of distilled water at the start of the experiment. A digital pH meter is positioned beside the pots for weekly pH readings. Answer the following:

Question Parts

( a )
State a clear hypothesis for this experiment.
( b )
Identify the independent variable, the dependent variable and one controlled variable.
( c )
Using the diagram, calculate the total volume of water required for the three pots at the start of the experiment.
( d )
Describe the procedure for recording the pH changes over the four‑week period, ensuring reliability of the data.

Detailed Solution & Marking Scheme

Get the step-by-step solution, key points required by examiners and detailed marking guidance through the Edcrib AI Tutor.

Reveal Answer

About This Question

This is Waec Model Questions Vol1 2017 Agricultural Science Question 2. It is one of the essay questions from the 2017 Waec Model Questions Vol1 Agricultural Science examination.

The question covers Soil Science, Soil Chemistry, Experimental Design .

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Chat with Support