JAMB - Agricultural Science (2013)

• 1

  The major reason which necessitates the
  expansion of agriculture is the increase in

  回答

  (B)

  population
• 2

  Which of the following groups of crops are
  mostly cultivated in the rainforest zone of
  Nigeria?

  回答

  (B)

  Maize, cocoyam and cassava
• 3

  In farm animals, gonads are organs associated
  with

  回答

  (D)

  reproduction.
• 4

  Which of the following combinations of farm
  inputs enhances the healthy growth of crop?

  回答

  (B)

  Irrigation and fertilizer
• 5

  When farmers engages in both plant and animal
  husbandry, he is practising

  回答

  (B)

  mixed framing
• 6

  The classification of soils into sand, loam and
  clay is largely determine by the percentage of

  回答

  (A)

  mineral matter
• 7

  An example of igneous rock is

  回答

  (B)

  basalt
• 8

  The most devastating agent of erosion is

  回答

  (C)

  run-off water
• 9

  A farming practice that encourages the depletion of soil fertility is

  回答

  (D)

  continuous cropping
• 10

  The kind of tillage method most suitable for
  maize is

  回答

  (B)

  minimum tillage
• 11

  

  Use the diagram below to this answer
  
  The structure labeled I represents a

  回答

  (D)

  root hair.
• 12

  

  Use the diagram below to this answer
  
  This type of root is associated with

  回答

  (A)

  nitrogen fixation
• 13

  Self-pollination takes place when grains are
  transferred from the

  回答

  (C)

  anther to the stigma of same plant
• 14

  Which of the following parts of plants are
  normally used for vegetative propagation?

  回答

  (B)

  Stem, root and leaf.
• 15

  The most suitable planting pattern for a
  mechanized farm which is mono cropped is

  回答

  (B)

  drilling
• 16

  Jute and kenaf thrive well in a soil that is

  回答

  (B)

  sandy loam
• 17

  Forages that are chopped green and fed directly
  to livestock are referred to as

  回答

  (D)

  soilage.
• 18

  Floriculture deals with the study of

  回答

  (A)

  flowers
• 19

  An advantage of weeds is that they are used to

  回答

  (C)

  check erosion
• 20

  Cassava mosaic disease is transmitted by

  回答

  (D)

  Bemisia nigerensis
• 21

  A serious pest of sweet potato whose larvae
  destroy the foliage is

  回答

  (A)

  leaf miners
• 22

  The fertility of soils under forest is sustained
  mainly by

  回答

  (A)

  nutrient recycling
• 23

  The Mendelian law of segregation states that
  the characteristics which is hidden in an F1,
  reappears in F2 generation in a ratio

  回答

  (C)

  1 : 3
• 24

  The breed of sheep that can be found
  throughout Nigeria is

  回答

  (A)

  Yankasa
• 25

  A female cattle which has not had a calf or
  developed into the mature form of a cow is
  referred to as

  回答

  (D)

  heifer
• 26

  Which of the following farm animals is
  considered as monogastric?

  回答

  (B)

  Pig.
• 27

  The process of mating in poultry is referred to as

  回答

  (D)

  treading
• 28

  In farm animals, a sign of heat includes

  回答

  (B)

  secretions from the vulva
• 29

  The anti-sterility vitamin in livestocks nutrition is

  回答

  (B)

  vitamin E
• 30

  The relative humidity in an incubator is usually
  set at

  回答

  (B)

  40% - 60%
• 31

  The causative organism of Avian influenza is a

  回答

  (B)

  virus
• 32

  The introduction of proper planktons species
  into the pond is referred to as

  回答

  (B)

  innoculation
• 33

  Selection based on the performance of ancestors
  is referred to as

  回答

  (B)

  pedigree selection
• 34

  The most important of all the factors of
  production in crop farming is

  回答

  (C)

  land
• 35

  

  From the curve above, at what point is it
  advisable for the farmer to stop further addition
  of input?

  回答

  (C)

  III
• 36

  Elastic demand is the type in which a change in
  price

  回答

  (A)

  brings about greater change in quantity of goods demanded
• 37

  Farm labour is usually measured in terms of

  回答

  (B)

  hours or days of work by labour
• 38

  A piece of information contained in payroll
  record of farms is

  回答

  (A)

  date of employment
• 39

  Retailers may create artificial scarcity of goods
  by

  回答

  (B)

  hoarding
• 40

  The most effective method of disseminating
  information among farmers is through

  回答

  (C)

  mass method
• 41

  In surveying, the instrument used to measure
  horizontal, vertical angles and planes is the

  回答

  (D)

  theodolite.
• 42

  

  Use the following diagram below to answer this question
  
  During which of the following plant propagation
  methods is the tool represented used?

  回答

  (C)

  Budding.
• 43

  The part labeled I is made of

  回答

  (B)

  aluminium
• 44

  Which of the following routine maintenance in a
  tractor is necessary on daily basis?

  回答

  (D)

  Checking of the oil level in the engine.
• 45

  The type of energy obtain from the sun is

  回答

  (B)

  solar energy