Tuesday, 15 February 2022 09:56

Tips and Frequently Asked Questions - Agricultural Sciences Grade 12 Revision Guide and Frequently Asked Questions

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TIPS FOR SUCCESS IN AGRICULTURAL SCIENCES: GRADE 12

Do your learners often struggle with the data response questions in the final exam? Try these hints to help them cope:

  1. Analyse the question before rushing to answer!
    The learners should first read the case studies, scenarios, data tables graphs and passages slowly and carefully, and then once more. The first task is to make quite sure that they understand case studies, scenarios, data tables graphs and passages and at what level they are being asked to answer it. So they must reread the question, underline key words and then decide what is being asked of them.
    They can use these questions to guide them:
    • What is the topic about? What is the issue?
    • What am I asked to do?
    • What knowledge is required?
    • Am I asked for an opinion that I must motivate?
    • Must I provide a counter opinion (different view) as part of my answer?
  2. Common Agricultural Sciences key words
    Here are some common key words in Agricultural Sciences. They ask for different kinds or levels of thinking, and different kinds of answers. Explain them to your learners. These words ask for simple information in different ways:

    Define Give the exact meaning of a term or concept, using your own words or mathematical symbols.
    Example: Define the term digestion.
    Describe Outline a process, structure, phenomenon or investigation in your own words (use diagrams when asked). Example: Describe gaseous exchange.
    Identify or indicate Choose or single out from other information. Example: Identify part the letter that represents the organ for excretion.
    List State briefly, in point form or one underneath the other. Example: List four compartments of a ruminant stomach.
    State Give or say, without any supporting arguments. Example: State three reasons why it is necessary to supplement roughage.
    Deduce A question to make a conclusion based on information/data provided. Example: Deduce the relationship between demand and supply
    Calculate Use a formula to work out an answer. (Show all calculations.) Example: Calculate the nutritive ratio (NR) of feed A.
    Tabulate Present responses in a table. Example: tabulate the differences between intensive and extensive production systems
    Select Choose from the information provided. Example: Select two sources of finance on a farm.
  3. Dos and don’ts
    • Don’t put in long sentences and personal emotional comments. Stick to presenting the facts and viewpoints as straightforwardly as possible. If asked for your personal opinion, as well as pie charts
    • Read the questions very carefully and present your answers according to the action words in the questions. For example compare, tabulate, explain and/or describe.
    • Don’t provide drawings or flow charts if not asked.
    • Make sure that you have a deep understanding of all the key concepts (for Agricultural Sciences in all knowledge areas)
    • Make sure that you are able to interpret line, bar graphs and tables

2.FREQUENTLY ASKED QUESTIONS (FOR THE PAST FOUR YEARS) : AGRICULTURAL SCIENCES

PAPER 1

TOPICS

2012 November

2013 November

2014 November

2015 November

1. Animal Nutrition

Alimentary canal of a ruminant( Labeling, Requirements of rumen micro organisms

Alimentary canal of a ruminant( Labeling, functions of major parts)

Diagram illustrating the route of food in ruminant stomach

Alimentary canal of a non- ruminant( Labeling , functions of major parts)

Calculation of (digestibility co-efficient.

Calculation of digestibility co- efficient – implication of calculated value

Calculation of digestibility co- efficient – implication of calculated value

Calculation of (digestibility co- efficient).

Processes used to improve digestibility of feeds

Calculation of nutritive ratio NR)

Calculation of nutritive ratio NR(Suitability of NR)

Calculation of nutritive ratio NR(Suitability of NR)

 

Calculation of Pearson Square

Enzymatic digestion

Structure of the villus (Labeling and absorption)

Calculation of Pearson – Square(ratio & percentage of feeds)

Adaptation of parts for absorption)

Absorption of fat molecules

Calculation of Pearson – Square(ratio & percentage of feeds

-Fodder flow programme (bar graph – cost effective measures for better utilization of feeds)

-Nutritional value of pasture on micro organisms

-Calculation of Pearson Square

- Fodder Flow ( Calculation)

Vitamin A (Functions and deficiency symptoms)

Methods of supplementing vitamins & minerals

Deficiency symptoms of vitamins & minerals vitamins & minerals Water (functions) Deficiency symptoms of vitamins & minerals

 

2. Animal production, protection and control

Extensive production system( optimizing production, primary products)

Characteristics of intensive production system

Extensive and intensive production system ( characteristics, measures to increase production in an extensive system)

Free range production system (advantages & disadvantages

Extensive and intensive production system(Differences)

Animal handling and behavior( Behavioural patterns)

External parasites( passage on ticks, economical value of ticks, life cycle of bont tick, biological control of external parasites

Vaccination programme

The role of state in animal protection

Animal behaviour

Impact of temperature on production

Pest and disease management

Indigenous farm animals (case study)

Disease control measures (indigenous v/s chemical)

Handling and management of farm animals (structure used to handle animals)

External parasites( control & diseases)

The role of state over medication

Characteristics of eco-

friendly chemicals

Plant poisoning(examples and control measures)

External parasites( method used to administer remedies)
Fat content(graph)

Feed consumption v/s production

Broiler production

Impact of temperature on production  

Related Items

 

3. Animal reproduction Male reproductive system (spermatogenesis, structure of spermatozoon)

Artificial insemination(AI)

Pregnancy (stages)

Female reproductive system(labeling)

Parturition( stages in pictures)

Signs of parturition

 

Hormones [graph] (oestrogen & progesterone)

Hormones [graph] (oestrogen & progesterone)

Signs of oestrus

Adaptability of infundibulum to capture ova

Oestrogen & progesterone (role in oestrus cycle)

Structure of spermatozoon(labelin g & functions)

Artificial insemination(AI) – definition & requirements

Embryo transfer(ET)
– stages and benefits

Hormones[graph] Oestrogen & progesterone)

Oogenesis

Cloning

ADD YOUR OWN NOTES:

 

PAPER 2

 

TOPICS

2012 November

2013 November

2014 November

2015 November

1. Agricultural marketing and management

Supply and demand (market equilibrium, inelasticity of supply, role of processing in supply)

Developing marketing strategy(marketing elements)

Business plan(items to be included

Characteristics of successful entrepreneur

Marketing systems

Comparing prices using a bar graph

Agri-business chain

Demand and supply

Price trend in a market system

Sequence in decision making process

Line graph on supply

Market strategy to increase supply

Agri-business chain

Economic reasons for decrease in supply

Marketing strategies and procedures

SWOT analysis

Aspects of feasibility study

Marketing type

Relationship between price , supply and demand

Graph

2. Production factors

Case study on production factors

Forms of assets

Problems of capital and ways to increase capitaL

Management as a production factor

Land (Ways to improve land productivity)

Labour (ways to improve labour productivity, HIV/AIDS on labour productivity)

Net value (definition & calculation)

Law of diminishing returns (causes of decrease in production output)

Case study on land ( land reform policy, aims of equity schemes)

Capital (forms and sources)

Farm labour (characteristics of a permanent labourer, causes for loss of farm labour)

Labour contracts (type of farm labour signing a contract)

Labour legislation

Impact of HIV/AIDS on farm labour

Capital (examples from a diagram, assets and liabilities)

Land (law of diminishing returns, measures to increase land productivity)

External factors impacting on farm business

Essential farm records

Case study

Labour legislation

Labour (ways to improve labour productivity

Land (law of diminishing returns, measures to increase land productivity)

 

 

3. Basic agricultural genetics

GMOs (dangers of GMO food, benefits of GMO food)

Phenotypic and genotypic ratios

Drawing of a Punnet square

Selection and variation( uses of variation in breeding, importance of variation)

Importance of index value

Cloning (Steps and importance /advantages)

Role of co-dominance

Incomplete and co- dominance

Genotypic and phenotypic percentages

Calculation of Estimated breeding value(EBV)

Species crossing(importance)

GMO (techniques used, conventional seeds vs GMO seeds, advantages of GMO)

Hybrid crossing(phenotype and genotype)

Drawing of a Punnett square

Comparison of upgrading, line breeding and crossbreeding. Disadvantages of line breeding

The difference between co-dominance and incomplete dominance

GMO (methods / techniques used, disadvantages.)

Differences between continuous and discontinuous variation

Selection ( methods and definition)

Monohybrid cross

Breeding system (upgrading)

Difference in yield(GMO & non- GMO)

Pontential benefits (Advantages)

Pontential risks ( Disadvantages)

Last modified on Tuesday, 15 February 2022 12:14