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ZIMSEC O Level · 4001/1 · N2018

Agriculture Paper 1 November 2018

Questions
39 of 40
Time allowed
60 min
Syllabus code
4001/1

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Questions
39
Pass mark
24
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Answer every question in the printed order, get marked at the end, then see the answers.

The questions

Question 1

Farming Systems
The amount of rain falling per unit area per unit time is referred to as
  1. Adistribution.
  2. Breliability.
  3. Ceffectiveness.
  4. Dintensity.

Question 2

Farming Systems
Which natural farming region is suitable for forestry, horticulture and intensive livestock production?
  1. ARegion 1
  2. BRegion 2
  3. CRegion 3
  4. DRegion 4

Question 3

Farming Systems
Resettlement in Zimbabwe was originally divided into models as follows:
  1. AModel A to B.
  2. BModel A to D.
  3. CModel A to E.
  4. DModel A to F.

Question 4

Natural Resources And Conservation
Why was CAMPFIRE introduced in rural areas?
  1. ATo encourage communities to raise trees.
  2. BTo improve food security of the country.
  3. CTo promote the smooth running of agricultural activities.
  4. DTo encourage communities to contribute to natural resource management.

Question 5

Natural Resources And Conservation
Aquatic habitat is suitable for
  1. Ahyenas
  2. Bmonkey
  3. Cwhales
  4. Dzebra

Question 6

Soil Science
Weathering is the breaking down of
  1. Aorganic matter to form humus.
  2. Brocks to form soil.
  3. Cmineral matter.
  4. Dclay soil.

Question 7

Soil Science
Metamorphic rocks are formed by the action of
  1. Aabrasion and plant growth.
  2. Bhydrolysis and animals.
  3. Cheat and chemical changes.
  4. Dliving organisms and heat.

Question 8

Soil Science
Why is crumb structure the most ideal for plant growth? Because it
  1. Asupplies all plant nutrients.
  2. Bcontains more organic matter.
  3. Cis found on the topsoil.
  4. Dhas good drainage.

Question 9

Soil Science
Which one is the correct order of soil particle sizes?
  1. Aclay, silt, sand
  2. Bclay, sand, silt
  3. Csand, clay, silt
  4. Dsilt, clay, sand

Question 10

Soil Science
Soil acidity can be corrected in arable lands through adding
  1. Apotassium sulphate.
  2. Bdolomitic limestone.
  3. Csodium nitrate.
  4. Dsulphur.

Question 11

Soil Science
Top soil is darker than subsoil because it contains
  1. Amineral matter.
  2. Bplant nutrients.
  3. Cburnt plant residues.
  4. Ddecomposed organic material.

Question 12

Plant Nutrition And Fertilisers
How is nitrogen lost from the soil to the atmosphere?
  1. Aby lightning
  2. Bby nitrification
  3. Cvolatilization
  4. Dammonification

Question 13

Plant Nutrition And Fertilisers
Identify the method of fertiliser application illustrated in the diagram below.
  1. Abase application
  2. Bhill placement
  3. Cbroadcasting
  4. Dbanding

Question 14

Soil And Water Conservation
Why should storm drains be constructed as the first mechanical conservation works on arable land? To
  1. Adivert water within the arable land.
  2. Bget rid of water from the water way.
  3. Cget rid of water from the contour ridges.
  4. Dreduce the speed of flood water from uplands.

Question 15

Soil And Water Conservation
Which of the following is a human activity that causes land degradation?
  1. Adeforestation
  2. Bcrop rotation
  3. Cfertiliser application
  4. Dwinter ploughing

Question 16

Water And Irrigation
Plants die in water-logged soils because of
  1. Aincreased soil moisture.
  2. Bincreased soil pH.
  3. Clack of nitrogen.
  4. Dlack of oxygen.

Question 17

Water And Irrigation
Which environmental factor can be supplemented?
  1. Awind
  2. Btemperature
  3. Chumidity
  4. Drainfall

Question 18

Water And Irrigation
Why is it encouraged to use sprinkler irrigation on calm days? To
  1. Areduce water infiltration.
  2. Ballow water conservation.
  3. Callow even water distribution.
  4. Dreduce high water evaporation.

Question 19

Water And Irrigation
Calculate the amount of water produced if a sprinkler producing 30 litres of water per minute, is allowed to irrigate for 2 hours.
  1. A1 600 litres
  2. B2 600 litres
  3. C3 600 litres
  4. D4 600 litres

Question 20

Soil Science
The washing down of soil nutrients beyond the rooting zone is called
  1. Adrainage.
  2. Bleaching.
  3. Crun off.
  4. Dpercolation.

Question 21

Plant Structure And Growth
Imbibition is the
  1. Aabsorption of water by the seeds.
  2. Babsorption of water by plant roots.
  3. Cmovement of water from high concentration to low concentration.
  4. Dmovement of water from low concentration to high concentration.

Question 22

Plant Structure And Growth
The correct word equation for respiration is
  1. AGlucose + oxygen →\rightarrow water + energy + hydrogen
  2. BGlucose + water →\rightarrow energy + carbon dioxide + water
  3. CGlucose + oxygen →\rightarrow carbon dioxide + water + energy
  4. DGlucose + energy →\rightarrow oxygen + water + carbon dioxide

Question 23

Plant Structure And Growth
How is the leaf adapted to prevent water loss?
  1. AIt has the waxy cuticle that is on the leaf surface.
  2. BIt has the palisade layer that is densely packed.
  3. CIt has spongy mesophyll that is loosely packed.
  4. DIt has the epidermis that is closely packed.

Question 24

Plant Breeding And Propagation
From the list of diagrams below, which is the best propagation method for an orange tree?
  1. AA
  2. BB
  3. CC
  4. DD

Question 25

Crop Protection
The diagram below illustrates the life cycle of stalk borer. Which is the most destructive stage in cereal crops?
  1. Aegg
  2. Blarva
  3. Cpupa
  4. Dadult

Question 26

Crop Protection
Which of the following pests is a sap sucking pest?
  1. ALocust
  2. BWeevil
  3. CAphids
  4. DCutworm

Question 27

Crop Protection
Weeds can be controlled in arable lands by use of
  1. Afungicides.
  2. Bherbicides.
  3. Carboricides.
  4. Dpesticides.

Question 28

Livestock Production
Which breeding programme promotes the formation of homozygous gene pairs?
  1. Across-breeding
  2. Bout-breeding
  3. Cin-breeding
  4. Dpedigree breeding

Question 29

Animal Nutrition
Which characteristic is common between ruminant and non ruminant animals?
  1. AIleum does the final digestion of carbohydrates and proteins.
  2. BLarge intestine absorbs water and vitamins.
  3. CChews the cud.
  4. DDigests cellulose.

Question 30

Livestock Production
After crossing a black bull (BB) with a white cow (bb), the genotype of the F1 generation was Bb. What is the percentage of white off-springs obtained after in-breeding the F1 generation?
  1. A100 %
  2. B75 %
  3. C50 %
  4. D25 %

Question 31

Plant Structure And Growth
The diagram below shows one of the stages in mitosis. The sister chromatids separate. Which stage is indicated in the diagram?
  1. AProphase.
  2. BMetaphase.
  3. CAnaphase.
  4. DTelophase.

Question 32

Animal Health
Bright eyes and alertness in both chickens and rabbits are a sign of
  1. Apoor health
  2. Bgood health
  3. Clow fertility
  4. Dgood maturity

Question 33

Livestock Production
A farmer recorded the following masses during the growth of a farm animal. Between which weeks did the animal make the greatest mass gain?
  1. A4-5 weeks
  2. B5-6 weeks
  3. C6-7 weeks
  4. D7-8 weeks

Question 34

Farm Structures And Machinery
Barbed wire strands are evenly separated by
  1. Astraining posts only.
  2. Bstandards only.
  3. Cdroppers.
  4. Danchors.

Question 35

Farm Structures And Machinery
The figure below shows a wire anchor. Name the type of anchor.
  1. AConventional anchor
  2. BBox anchor
  3. CStay anchor
  4. DDouble box anchor

Question 36

Farm Structures And Machinery
The anchor in question 35 resists the force of strain in the strands by
  1. Athe wound anchor wire.
  2. Bdeeply planted post.
  3. Cthe anchor post planted in concrete.
  4. Dthe weight of buried rocks in anchor hole.

Question 37

Farm Structures And Machinery
The characteristic of a well sited road is that it should be
  1. Asteep to allow fast movement of water.
  2. Bcambered to drain water from the surface.
  3. Cnarrow to reduce wastage of land.
  4. Dflat to reduce the speed of flowing water.

Question 39

Farm Management And Economics
How do farmers protect their businesses from risks?
  1. AInsurance
  2. BSpecialisation
  3. CProduct processing
  4. DLarge scale farming

Question 40

Farm Management And Economics
During project planning, the value of a good forgone is described as
  1. Aa fixed cost.
  2. Ba forgone cost.
  3. Ca variable cost.
  4. Dan opportunity cost.

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