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ZIMSEC O Level · 5034/1 · N2011

Agriculture Paper 1 November 2011

Questions
34
Time allowed
60 min
Syllabus code
5034/1

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Questions
34
Pass mark
21
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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
Temporary wilting in plants is a result of
  1. Alow rate of water uptake as compared to transpiration.
  2. Bhigh rate of water uptake as compared to transpiration.
  3. Crate of water uptake being the same as transpiration.
  4. Dlow rate of water uptake and low rate of transpiration.

Question 2

Weather and climate

The diagrams show types of weather measuring instruments X, Y, and Z.

What are these instruments used to measure?

  1. AX temperature, Y wind speed, Z wind direction
  2. BX humidity, Y wind direction, Z wind speed
  3. CX wind speed, Y humidity, Z wind direction
  4. DX temperature, Y wind direction, Z wind speed

Question 3

Weather and climate
Which of the following rainfall aspects greatly influence a farmer's choice of cereal varieties to grow?
  1. Adistribution and intensity
  2. Beffectiveness and intensity
  3. Cdistribution and amount
  4. Deffectiveness and distribution

Question 4

Natural regions
Which of the following crops would you recommend for production in Natural Region I?
  1. Asugar cane, maize, fruits
  2. Bfruits, tea, potatoes
  3. Csoya beans, maize, cotton
  4. Dtobacco, maize, field beans

Question 5

Cropping systems
Which of the following is an advantage of practising monoculture?
  1. Ait is easy to carry out
  2. Bit improves the drainage of a field
  3. Cit attracts a lot of pests and diseases
  4. Dthere is specialisation and use of one type of machinery

Question 6

Agricultural extension
Which is the correct order for disseminating agricultural information to farmers?
  1. Afarmer -> research -> extension officer
  2. Bextension officer -> research -> farmer
  3. Cfarmer -> extension officer -> research
  4. Dresearch -> extension officer -> farmer

Question 7

Forestry
One method of achieving uniformity of sowing gum tree seeds is to
  1. Ause a seed spreader.
  2. Bmix seed with sand and broadcast.
  3. Cuse of uniformly spaced furrows.
  4. Dcollect seeds from mature trees only.

Question 8

Forestry
Why is it advisable to harvest timber in late October or early November?
  1. Atrees will have shed their leaves
  2. Bto give chance for more shoots to develop during the rainy season
  3. Cit is the best time to treat timber
  4. Dto allow easy transportation for the logs

Question 9

Crop protection
Select the correctly matched pesticide to its target
  1. Ainsecticides: weed plants
  2. Bfungicides: bacteria
  3. Cherbicides: insects
  4. Dacaricides: mites

Question 10

Wildlife management
Which of the following best describes the off-take rates for larger animals like zebra as compared to smaller animals?
  1. Alower
  2. Bhigher
  3. Cmoderate
  4. Dsame

Question 11

Soil science
The diagram below represents the constituents of soil. Which constituent do we get as the result of weathering?
  1. AA
  2. BB
  3. CC
  4. DD

Question 12

Soil science
Which of the following factors influence soil formation?
  1. Aparent material, light and air
  2. Blight, climate and parent material
  3. Cclimate, relief and parent material
  4. Dlight, air and climate

Question 13

Soil science

A mechanical analysis carried out on four different soils A,B,C, and D showed the following results

Which soil will be most suitable for crop production?

  1. AA
  2. BB
  3. CC
  4. DD

Question 14

Soil fertility
The substance used to raise the soil pH is
  1. AChalk.
  2. BCompound D.
  3. CAmmonium nitrate.
  4. DSulphate of ammonia.

Question 15

Soil fertility
Select a set of processes from the following that result in loss of nitrogen from soil.
  1. Anitrification, ammonification, volatilization
  2. Bdenitrification, nitrification, leaching
  3. Cdenitrification, ammonification, volatilization
  4. Dleaching, denitrification, volatilization

Question 16

Fertilisers
A 50kg bag of urea contains 46%N. How much nitrogen in kilograms do five bags of urea have?
  1. A96 kg
  2. B115 kg
  3. C230 kg
  4. D250 kg

Question 17

Soil conservation
Which is the most important factor to consider in determining the method to use in controlling soil erosion?
  1. Aslope of the land
  2. Btype of soil
  3. Ctype of crop to be grown
  4. Damount of rainfall

Question 18

Plant structure
The diagram shows a section through the stem of a root. Which of the labelled parts A, B, C or D is part of the epidermal layer?
  1. AA
  2. BB
  3. CC
  4. DD

Question 19

Plant physiology
Plasmolysis occurs when water moves from
  1. Asoil into plant cells.
  2. Bcell to cell.
  3. Croot to leaves.
  4. Dplant cells into soil.

Question 20

Plant structure

The diagram shows part of a leaf structure

What is the function of the part labelled X?

  1. Acontrols opening of stomata
  2. Bopen to allow gaseous exchange
  3. Cprctects leaf from diseases
  4. Dprevents moisture loss

Question 21

Crop husbandry
The planting date of a dry land field crop can be brought forward by
  1. Asoaking the seed.
  2. Busing certified seed.
  3. Ctractor ploughing.
  4. Dwater planting.

Question 22

Crop protection

The diagram illustrates the classification of pests according to their feeding habits.

Choose the correct list that would be represented by X, Y and Z

  1. AX mealy bug, Y locust, Z stalkborer
  2. BX weevils, Y termites, Z aphids
  3. CX termites, Y aphids, Z weevils
  4. DX stalkborer, Y mealybug, Z locust

Question 23

Forestry
A farmer has to choose between four possible sites A,B,C or D for the establishment of a woodlot nursery. From which site is he likely to choose?
  1. AA
  2. BB
  3. CC
  4. DD

Question 30

Livestock parasites
Which of the following shows the correct order of the life cycle of a one host tick?
  1. Aeggs -> nymph -> larvae -> adult
  2. Beggs -> larvae -> nymph -> adult
  3. Ceggs -> larvae -> pupa -> adult
  4. Deggs -> nymph -> pupa -> adult

Question 31

Farm structures
Select the correct tool for cutting and tying wire during fencing.
  1. Aclaw hammer
  2. Bclipper
  3. Cpliers
  4. Dhacksaw

Question 32

Farm structures
Four groups of students A, B, C and D working on garden fence constructed box anchors as shown by the diagrams below. Which group constructed the correct anchor?
  1. AA
  2. BB
  3. CC
  4. DD

Question 33

Farm roads
Which of the following features on the road carry water above the road surface?
  1. Acamber
  2. Bmitre drain
  3. Cinvert
  4. Dculvert

Question 34

Farm roads
One of the reasons for constructing roads on a watershed is
  1. Ato reduce erosion.
  2. Bfor good scenery.
  3. Cfor good drainage.
  4. Dthat less materials are needed.

Question 35

Farm power
When harnessing oxen using a yoke, which of the following is used to secure the yoke?
  1. Achain
  2. Bstrope
  3. Cclamp
  4. Dskei

Question 36

Agricultural economics
What is the effect of an increase in price of a cereal on the market?
  1. Aincrease in quantities demanded
  2. Bincrease in demand of the cereal
  3. Cless of the cereal bought
  4. Dno change in quantities supplied

Question 37

Farm records and accounts
An example of a variable item is
  1. Afencing.
  2. Bfertilisers.
  3. Crent.
  4. Dpermanent labour.

Question 38

Agricultural economics
"The quantity of a product demanded varies inversely with the price offered". This is a law of
  1. Asupply.
  2. Bdemand.
  3. Cmarginal returns.
  4. Ddiminishing returns.

Question 39

Agricultural economics
The diagram shows the demand and supply of cabbages. What causes the shift from the equilibrium to point X in the short run?
  1. Aquantity of cabbages bought will increase
  2. Bquantity supplied and demanded will be the same
  3. Cquantity demanded will decrease
  4. Dquantity supplied will decrease

Question 40

Agricultural marketing
Which of the following crops has its marketing controlled in Zimbabwe?
  1. Acotton
  2. Btobacco
  3. Cwheat
  4. Dsoya-beans

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