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ZIMSEC O Level · 5034/1 · N2013

Agriculture Paper 1 November 2013

Questions
39 of 40
Time allowed
60 min
Syllabus code
5034/1

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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

Plant Physiology
Name the process by which manufactured food is moved from the leaves to the roots.
  1. Aosmosis
  2. Bphotosynthesis
  3. Ctranspiration
  4. Dtranslocation

Question 2

Crop Production
Which of the following factors influences the spacing of crops?
  1. Asize of the seed
  2. Bthe condition of the soil
  3. Cthe growth habit of the crop
  4. Dthe cost of the planting materials

Question 3

Soil Fertility And Fertilizers
Application of plant nutrients in irrigation water is termed
  1. Abanding.
  2. Bbroadcasting.
  3. Cfertigation.
  4. Dfoliar spraying.

Question 4

Natural Resources And Conservation
The success of Communal Areas Management Programme for Indigenous Resources (CAMPFIRE) in rural areas depends on
  1. Aavailability of money to give to local people.
  2. Bempowering local people to manage their resources.
  3. Cgiving quotas to professional hunters.
  4. Dteaching about conservation in communities.

Question 5

Farm Structures And Fencing
Wire strands are kept evenly spaced by
  1. Astays.
  2. Bstraining posts.
  3. Cdroppers.
  4. Dstandards.

Question 6

Natural Resources And Conservation
Fig. 1 is a generalised diagram of the water cycle. Which letter represents precipitation?
  1. AA
  2. BB
  3. CC
  4. DD

Question 7

Farm Management And Economics
Mrs Dube signed a contract with Mr Goto to use his plot for the next two years. What type of land tenure system is this?
  1. Acommunal
  2. Bfree hold
  3. Clease hold
  4. Dresettlement

Question 8

Natural Regions And Climate
Deciduous fruit trees are mostly grown in Natural Farming Region I due to its
  1. Ahigh temperature and low rainfall.
  2. Bhigh temperature and high rainfall.
  3. Clow temperature and high rainfall.
  4. Dlow temperature and low rainfall.

Question 9

Forestry
Why should you make a sloping cut when harvesting gum trees?
  1. Aencourage new shoots to develop
  2. Bprevent diseases
  3. Cprotect stumps from pest
  4. Dnew shoots will grow faster

Question 10

Soil Fertility And Fertilizers
In the nitrogen cycle, which bacteria converts nitrite into nitrate?
  1. Aazotobacter
  2. Bnitrobacter
  3. Cnitrosomonas
  4. Drhizobia

Question 11

Crop Production
Fig. 2 is a cross section of a maize seed. Which structure emerges first during germination?
  1. Aradicle
  2. Bcotyledon
  3. Cplumule
  4. Dendosperm

Question 12

Crop Pests And Diseases
Which of the following is a sucking and piercing pest?
  1. Agrain weevil
  2. Blocust
  3. Credspider mite
  4. Dtermite

Question 13

Crop Production
Farmers are advised to include beans in a crop rotation because
  1. Athey are rich in proteins.
  2. Bthey improve soil fertility.
  3. Cthey do not require fertilizer.
  4. Dthey mature early.

Question 14

Animal Nutrition
Which mineral deficiency causes thin egg shells and reduced egg production?
  1. Acalcium
  2. Bchlorine
  3. Ciron
  4. Dsodium

Question 15

Crop Pests And Diseases
Viral diseases in plants are mostly transmitted by
  1. Asucking pests.
  2. Bchewing pests.
  3. Csoil pests.
  4. Dboring pests.

Question 16

Animal Nutrition
The diagram below shows the ruminant digestive system. Which of the parts labelled A, B, C, D is the centre for micro-organism activity?
  1. AA
  2. BB
  3. CC
  4. DD

Question 17

Soil Science
Identify the correct particle size of sand.
  1. A2 - 0.2 mm
  2. B0.2 - 0.02 mm
  3. C0.02 - 0.002 mm
  4. Dless than 0.002 mm

Question 18

Natural Resources And Conservation
Ecology is the study of how
  1. Aplants and animals survive.
  2. Bplants photosynthesize and respire.
  3. Canimals interrelate with each other.
  4. Dorganisms interrelate with their environment.

Question 19

Soil Conservation
Which factor has the greatest influence on the amount of water erosion in an area?
  1. Asoil depth
  2. Bground cover
  3. Ctype of soil
  4. Dsoil profile

Question 20

Crop Pests And Diseases
An insecticide which is sprayed and gets absorbed by the tissues of the plant is called
  1. Acontact.
  2. Bfumigant.
  3. Crepellent.
  4. Dsystemic.

Question 21

Soil Conservation
Which of the following is the correct biological method of controlling erosion?
  1. Aearly planting, use of gabions and terracing
  2. Bplanting vertivar grass, controlled grazing and mulching
  3. Ctied ridging, planting trees and contour ridges
  4. Dgrass leys, use of gabions and mulching

Question 22

Soil Science
Fig. 3 is a diagram which represents the separation of soil particles by the water sedimentation method. Which letter represents fine sand?
  1. AA
  2. BB
  3. CC
  4. DD

Question 23

Plant Physiology
Pupils planted seeds in a container and after germination they added water that covered the seedlings. They noted that the seedlings died after a few days. The main reason why the seedlings died was due to
  1. Atoo much light.
  2. Black of air.
  3. Clack of warmth.
  4. Dlack of mineral salts.

Question 24

Plant Physiology
The importance of phototropism in plants is to
  1. Aprevent excessive shading by other plants.
  2. Bpromote rapid growth in plants.
  3. Cencourage respiration in plants.
  4. Dpromote transpiration in plants.

Question 25

Animal Nutrition
Fig. 4 shows the Pearson's Square method used to calculate rations for animal feeds. How many parts of maize meal and cotton seed cake should be used to prepare a ration that contains 16% protein?
  1. A20 parts maize meal and 5 parts cotton seed cake
  2. B5 parts maize meal and 20 parts cotton seed cake
  3. C16 parts maize meal and 36 parts cotton seed cake
  4. D11 parts maize meal and 16 parts cotton seed cake

Question 26

Natural Resources And Conservation
Carnivores are animals that prey on other animals. Which one is a list of carnivores?
  1. Ahyena, leopard, lion, elephant
  2. Btiger, leopard, kudu, lion
  3. Cimpala, lion, leopard, hyena
  4. Dtiger, leopard, lion, hyena

Question 27

Animal Health
Which of the following is the most effective way to prevent the occurance of diseases in rabbits or layers?
  1. Abuying breeding stock from registered breeders
  2. Bpractising strict hygiene in houses
  3. Cproviding adequate feeds and water
  4. Dtreating or killing all affected animals

Question 28

Soil Fertility And Fertilizers
The process by which nitrogen fertiliser is lost as gas into the atmosphere under water logged conditions is called
  1. Adenitrification.
  2. Bleaching.
  3. Cnitrification.
  4. Dvolatilization.

Question 29

Plant Physiology
The tissue-cortex in plants is responsible for
  1. Aabsorption of water and ions.
  2. Btranslocation of assimilates.
  3. Ccreating new cells for roots to grow.
  4. Dstorage of manufactured food from the leaves.

Question 30

Soil Fertility And Fertilizers
Magnesium deficiency in the growing maize plant is characterised by
  1. Afiring of leaves from tip to the leaf sheath.
  2. Byellowing of leaves starting from tip to leaf sheath.
  3. Cwhitish strips along the veins of leaf sheath.
  4. Dpurplish colouring on edges of leaf.

Question 31

Animal Health
Animals are vaccinated in order to
  1. Astimulate the production of antibodies.
  2. Bsterilise disease causing organisms.
  3. Ctreat affected animals.
  4. Dprovide essential nutrients.

Question 32

Water Management And Irrigation
Fig. 5 illustrates a method of water management. The purpose of this water management is for
  1. Awater treatment and storage.
  2. Bwater purification and storage.
  3. Cwater harvesting and storage.
  4. Dwater harvesting and treatment.

Question 33

Farm Structures And Fencing
A farmer intends to fence a plot measuring 400 m x 300 m with 4 strands of barbed wire. If one roll of barbed wire covers 300 m, how many rolls of barbed wire does the farmer require?
  1. A12
  2. B16
  3. C18
  4. D19

Question 34

Water Management And Irrigation
Which of the following is not a disadvantage of flood irrigation?
  1. Ais not suitable for sandy soils
  2. Bsalts accumulate in root zones of crops
  3. Cmuch water infiltrates into the soil
  4. Dit causes soil erosion.

Question 35

Crop Pests And Diseases
In what weather conditions are fungal diseases most common?
(i) cold windy conditions
(ii) dry windy conditions
(iii) hot humid conditions
(iv) wet cold conditions
  1. A(i) and (iii)
  2. B(ii) and (iii)
  3. C(i), (ii) and (iii) only
  4. D(i), (ii), (iii) and (iv)

Question 37

Plant Physiology
On a hot-sunny day maize leaves show signs of wilting because
  1. Athe rate of water absorption by the roots exceeds transpiration.
  2. Bthe rate of water absorption by roots is slower than the rate of transpiration.
  3. Cthe rate of water absorption by roots is equal to the rate of transpiration.
  4. Dthe rate of water absorption by the roots exceed the rate of photosynthesis.

Question 38

Animal Breeding
Which of the following are reasons for cross breeding animals?
(i) increased yield meat, eggs and milk
(ii) produce animals with high fat content
(iii) fast growth rate
(iv) prolonged breeding life
  1. A(i) and (ii) only
  2. B(ii) and (iii) only
  3. C(iii) and (iv) only
  4. D(i) and (iii) only

Question 39

Farm Management And Economics
Fig. 6 shows the prices of cabbages at a local market place from September to August. Why is the price of cabbages highest in January?
  1. Abuyers have a lot of money
  2. Bcabbages are of high quality
  3. Ccabbage supply is low
  4. Ddemand for cabbages is low

Question 40

Farm Management And Economics
Fig. 6 shows the prices of cabbages at a local market place from September to August. Which months have the highest supply of cabbages on the market?
  1. ADecember and January
  2. BJune and July
  3. CJuly and August
  4. DMarch and April

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