(a) In a tabular form, list ten differences between subsistence agriculture and commercial agriculture. [10marks] (b) State one advantage and one disadvanta...

Assessment: WAEC SSCE - Agricultural Science - 2011 (Essay) Subject: Agricultural Science

Question 1 Report

(a) In a tabular form, list ten differences between subsistence agriculture and commercial agriculture. [10marks]

(b) State one advantage and one disadvantage of the following sources of farm power:

(i) wind;

(ii) internal combustion engine;

(iii) electricity. [6 marks]

Answer Details

(a) Ten differences between subsistence and commercial agriculture

Subsistence agricultureCommercial agriculture
Produces mainly to feed the farmer's familyProduces mainly for sale and profit
Farm size (holding) is smallFarm size is large
Uses simple, local tools such as hoe and cutlassUses machines such as tractors and harvesters
Requires little capitalRequires large capital
Uses family labourUses hired/skilled labour
Output/yield is lowOutput/yield is high
Many crops are grown together (mixed cropping)Usually one crop is grown on large scale (monocropping)
Little or no use of improved inputsUses improved seeds, fertilisers and agro-chemicals
Low level of technology and managementHigh level of technology and scientific management
Little or no surplus for storage/processingLarge surplus for storage, processing and export

(b) Sources of farm power

SourceOne advantageOne disadvantage
(i) WindIt is free, renewable and does not pollute the environmentIt is unreliable because it does not blow steadily at all times
(ii) Internal combustion engineIt is powerful and can do heavy work quicklyIt is costly to buy, fuel and maintain and it pollutes the air
(iii) ElectricityIt is clean, convenient and easy to controlSupply is often not available in rural areas and can be interrupted

Download The App On Google Playstore

Everything you need to excel in your exams

Green Bridge CBT Mobile App
Personalized AI Learning Chat Assistant
200,000+ Exam Questions Across IGCSE, JAMB, WAEC & NECO
Over 3,900 Lesson Notes
Offline Support - Learn Anytime, Anywhere
Green Bridge Timetable
Literature Summaries & Potential Questions
Track Your Performance & Progress
In-depth Explanations for Comprehensive Learning