📄 Exam Questions & Readable Text Transcript
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Extracted Content: 6024q1Specimen paper
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For Performance MeasurementZIMBABWE SCHOOL EXAMINATIONS COUNCIL
General Certificate of Education Advanced Level
HORTICULTURE 6024/1
PAPER 1 Multiple Choice
Additional Materials:
Multiple Choice answer sheet,
Soft pencil (type B or HB is recommended),
Soft clean eraser,
Scientific Calculator.
TIME 1 hour
INSTRUCTIONS TO CANDIDATES
Do not open this booklet until you are told to do so by the invigilator.
Write your name, Centre number and candidate number on the answer sheet in the spaces provided
unless this has already been done for you.
There are forty questions in this paper. Answer all questions. For each question there are four
possible answers, A, B, C, and D. Choose the one you consider correct and record your choice in
soft pencil on the separate answer sheet.
Read very carefully the instructions on the answer sheet.
INFORMATION FOR CANDIDATES
Each correct answer will score one mark.
Any rough working should be done in this booklet.
This question paper consists of 10 printed pages and 2 blank pages.
Copyright: Zimbabwe School Examinations Council, Specimen paper.
©ZIMSEC Specimen paper. [Turn over
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Horticulture is well suited to which kind of environment?A Humid tropical forests
B Hot pine forest regions
Cc Cool pine forest regions
D Warm, humid tropical forests
Which of the following organelles manufactures A denosine Triphosphate (ATP)?
A Chloroplasts
B Nucleus
Cc Mitochondria
D Lysosomes
ee arises due to salts in solution that lower the free energy of water.
A Matric potential
B Osmotic potential
Cc Overburden potential
D Gravitational potential
Matric potential results from the following phenomenon
A adhesion and cohesion.
B osmotic and adsorption.
Cc capillarity and adhesion.
D capillarity and cohesion.
Which is the site of glycolysis?
A Mitochondria
B Cytoplasm
Cc Golgi apparatus
D Endoplasmic reticulum
Which one is nota C A M plant?
A Aloe vera
B Prickle pear
Cc Cactic
D Corm
The Kreb cycle occurs in the
A Mitochondria.
B Cytoplasm.
Cc Golgi apparatus.
D Endoplasmic reticulum.
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113
Which one is not a method of breaking seed dormancy?
A Cloning
B Scarification
Cc Stratification
D Addition of hot water
The first stable product of the C3 pathway is a carbon compound called
A phosphoglycerate.
B pyruvate.
Cc oxaloacetate.
D malate.
What is the function of molecular oxygen in cellular respiration?
To combine with carbon to produce carbon dioxide
To combine with glucose to produce carbon dioxide
To combine with hydrogen to produce water
To oxidise ADP to ATP
SanY
A perfect flower has
A both stamen and pistil.
B both pistil and sepals.
Cc only petal.
D only stamen.
Which one is a biological method of controlling weeds?
A Mulching
B Crop rotation
Cc Selective crop stimulation
D Use of a bioagent
Which of the following describe the effects of compaction on soil?
Porosity Bulk density
A increase low
B decrease low
Cc increase high
D decrease high
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416
17
4
The ability of a soil structure to resist collapse when saturated with water is known as
A vulnerability.
B porosity.
Cc stability.
D bulk density.
What drainage conditions are associated with red subsoils soils?
A Excellent.
B Good.
Cc Moderate.
D Poor.
Cation Exchange Capacity (CEC) is defined as the sum of all exchangeable
A cations.
B basic cations.
Cc acidic cations.
D basic and acidic cations.
Which of the following insect pest has mandibles?
A Beetles
B Thrips
Cc Aphids
D Bugs
Beading and droplets of water on flowers indicate
A high temperature.
B high humidity.
Cc low temperature.
D low humidity.
Which of the following is nota subtropical fruit?
A Citrus
B Granadilla
Cc Grapes
D Apples
Which of the following is not a cause of post harvest losses of horticultural
products?
Low temperature and high atmospheric humidity
Improper handling during harvesting
High temperature and low humidity
Disease and pest
Soar
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Secondary growth in both roots and stems results inproduction of xylem and phloem vessels.
rapid increase in root and stem length.
development of vascular and cork cambium.
production of parenchyma cells only.
Sanr
A cross-section of a root shows central star-shaped mass of xylem when the plant is a
A dicot.
B monocot.
Cc biennual.
D perennial.
Which statement explains why C3 plants are not photosynthetically efficient under
light conditions?
Stomata close and oxygen reacts with ribulose biphosphate
Stomata open and carbon-dioxide reacts with ribulose biphosphate
Stomata close and oxygen reacts with phosphoglyceric acid
Stomata open and oxygen reacts with glyceraldehyde 3-phosphate
Soar
Which of the following is a hydrogen acceptor in a non cyclic photophosphorylation?
A ADP
B NAD
Cc NADP
D RuBP
What is the primary structural differences between roots and stems?
Arrangement of vascular tissues within the stem and root
Arrangement of pith within the stem and root
Differences in xylem and phloem function
Differences in the number of stomata
SanY
Which soil structure has caps on the surface and pans in the soil?
A Prismatic
B Angular blocky
Cc Platy
D Crumb
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6What is the effect of low pH on clay particles with high concentration of nutrients?
A Flocculation of clay particles leading to adsorption of cations
B Disintegration of clay minerals leading to leaching
Cc Displacement of hydrogen ions to adsorption of cations
D Precipitation of hydrogen ions leading to toxic effects
What distinguishes sprinkler irrigation from drip irrigation?
Sprinkler irrigation Drip irrigation
A | Water under high pressure | Water under low pressure
B | Water under low pressure Water under high pressure
C | High erosion High erosion
D | Low erosion High erosion
Why do clay soils require large amounts of lime than sandy soils to produce the same
pH change?
A The silicate in sand has a lower neutralising value.
B Sand soil has a large buffering capacity
Cc Clay has more intra — aggregate pores
D Clay has more exchange sites
Which physical property of the soil is reduced by adding organic fertilizer?
A Porosity
B Aggregation
Cc Bulk density
D Particle density
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31The diagram below shows a supply curve of vegetables.
Quantity of vegetables
Which factor causes the shift in supply of the vegetables from A to B?
A Increase in market price
B Improvement in technology
Cc Increase in population
D Increase in income
Identify a problem associated with graft incompatibility.
Mature defoliation
General good health
Non degeneration of tissues at graft union
Complete failure to form a graft union
SanY
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cell membrane oO [oxe)fore)
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33. ~=—- Which one of the following diagrams show facilitated diffusion?
cell membrane
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D
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934 ~—C What is the reason why point X on the graph is the best time to col
Accumulation
of
dry matter
ect root cuttings.
Time
Good protein reserves
Good carbohydrate reserves
Good fat reserves
Good mineral reserves
Soar
3 The diagram below shows part of the Kreb’s cycle.
Acetyl co-enzyme
malate succinate
What name is given to substances labelled a?
A Rubisco
B Aspartate
Cc Citrate
D Oxaloacetate
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10The transition from vegetative growth to flowering in long- day or cold requiring
plants can be promoted by application of
A auxin.
B abscisic acid.
Cc gibberellic acid.
D cytokinins.
How does the addition of agricultural lime assist in the availability of soil nutrients?
H<em> adsorbed K</em> set free
Ca?+ adsorbed, K<em> and Mg?</em> set free
H* adsorbed, POs set free
K* adsorbed, Mg** set free
SanY
What would a maggot grow up to be when it moults into an adult?
A Fly
B Earwig
Cc Louse
D Grasshopper
What should be considered when marketing horticultural products?
>
Handling, storage, products, consumers, markets
B Perishability, distribution, products, consumers, handling
Cc Markets, products, storage, consumers, handling
D Packaging, storage, transportation, financing, distribution
ee require more lime to raise its pH.
A Sandy soil with low organic matter
B Sandy loam with high organic matter
Cc Clay soil with low organic matter
D Clay soil with high organic matter
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