2016 WAEC (WASSCE) Agricultural Science Past Questions & Answers

Question 1

Land is said to be a fixed asset in Agriculture. This means that

Accepted Answer

C. its size remains fixed over time

Answer

A. its features and topography are fixed

Answer

B. soil nutrients and its vegetative cover can be replaced

Answer

D. its micro organic composition is constant over time

Question 2

The process of crossing two pure lines of plants of the same species is called

Accepted Answer

C. hybridization

Answer

A. selection

Answer

B. genotype improvement

Answer

D. inbreeding

Question 3

Risks on commercial farms could result from

Accepted Answer

B. crop failure

Answer

A. price stability

Answer

C. insurance

Answer

D. diversification

Question 4

Rhizobium supplies nitrogen to leguminous plants by

Accepted Answer

B. fixing atmospheric nitrogen into the soil

Answer

A. incorporating urea into their bodies

Answer

C. decomposing plant and animals remains

Answer

D. decreasing the pH value of the soil

Question 5

A beef cow gained 75 kg over a period of two months and two days. What is its average weight gain?

Accepted Answer

B. 1.21 kg

Answer

A. 0.83 kg

Answer

C. 1.28 kg

Answer

D. 2. 25kg

Question 6

The continuous removal of forest tress without replacement is known as

Accepted Answer

C. deforestation

Answer

A. afforestation

Answer

B. taungya farming

Answer

D. selective exploitation

Question 7

The document given to a farmer on acquiring a piece of land from government is called

Accepted Answer

C. certificate of occupancy

Answer

A. certificate of purchase

Answer

B. receipt of ownership

Answer

D. receipt of lease

Question 8

Which of the following plants is not a leguminous forage?

Accepted Answer

B. Panicum maximum

Answer

A. Centrosema Pubescens

Answer

C. Stylosanthes gracilis

Answer

D. Calopogonium mucunoides

Question 9

Which of the following insects transmits swollen shoot virus of Cocoa?

Accepted Answer

B. Mealybug

Answer

A. Stem borer

Answer

C. White fly

Answer

D. Capsid

Question 10

Crop rotation is often used in maintaining soil fertility because

Accepted Answer

B. some of the crops fix nitrogen in the soil

Answer

A. all crops grown, add nutrient to the soil

Answer

C. crops grown are ploughed into the soil

Answer

D. the crops are rotated on different farmlands

Question 11

Oestrogen in female animals is not responsible for

Accepted Answer

C. milk let - down after parturition

Answer

A. development of secondary sexual charcteristics

Answer

B. on set of heat period

Answer

D. development of udder

Question 12

Methods of preserving fish including the following except

Accepted Answer

D. soaking

Answer

A. drying

Answer

B. smoking

Answer

C. salting

Question 13

Which of the following suggestion would solve transportation problems associated with agriculture ?

Accepted Answer

B. Efficient railway system

Answer

A. Establishment of tractor hiring units

Answer

C. Establishment of car hire units

Answer

D. Provision of extension services

Question 14

Ecto-parasites can be controlled by

Accepted Answer

C. dipping of host

Answer

A. administering antibodies to host

Answer

B. administering antibiotics to host

Answer

D. deworming of host

Question 15

An agricultural extension officer should be able to

Accepted Answer

D. guide and educate farmers

Answer

A. create new jobs for farmers

Answer

B. raise funds for farmers

Answer

C. cultivate a large farm

Question 16

Which of the following conditions is a characteristic of a poorly drained soil?

Accepted Answer

C. Decrease in the activities of micro organisms

Answer

A. presence of a large number of termites

Answer

B. Presence of high amount of humus

Answer

D. High soil fertility and productivity

Question 17

In chemical weathering of rocks, the equation Fe,2O3+3H2O → Fe2O33H2O represents

Accepted Answer

B. hydration

Answer

A. carbonation

Answer

C. solution

Answer

D. oxidation

Question 18

Cropping in fish farming is the act of

Accepted Answer

C. harvesting fish

Answer

A. stocking fish

Answer

B. processing fish

Answer

D. feeding fish

Question 19

The botanical name of Northern gamba grass is

Accepted Answer

D. Andropogon gayanus

Answer

A. Cynodon dactylon

Answer

B. Panicum maximum

Answer

C. Pennisetum purpureum

Question 20

An example of igneous rock is

Accepted Answer

A. granite

Answer

B. limestone

Answer

C. coal

Answer

D. sandstone

Question 21

Progeny selection involves selection of breeding stock on the basis of

Accepted Answer

D. performance of offspring

Answer

A. feed conservation efficiency of the parents

Answer

B. merits of each animal

Answer

C. merits of the dam only

Question 22

The most effective method of controlling viral diseases in crops is by

Accepted Answer

B. renoving and burning affected crops

Answer

A. spraying with bordeaux mixture

Answer

C. practicing crop rotation

Answer

D. planting at recommended spacing

Question 23

Most farm business fail because of

Accepted Answer

D. poor management

Answer

A. death of the manager

Answer

B. lack of capital

Answer

C. labour problems

Question 24

A farm animal which possesses a pair of caeca is

Accepted Answer

B. fowl

Answer

A. pig

Answer

C. sheep

Answer

D. cattle

Question 25

The cut and carry system of feeding livestock is termed

Accepted Answer

B. zero grazing

Answer

A. rotational grazing

Answer

C. mixed grazing

Answer

D. controlled grazing

Question 26

Which of the following animal disease is not associated with malnutrition?

Accepted Answer

A. Aspergillosis

Answer

B. Acidosis

Answer

C. Milk fever

Answer

D. Rickets

Question 27

Pure line of crops are produced through continuous

Accepted Answer

D. inbreeding

Answer

A. selection

Answer

B. hybridization

Answer

C. cross breeding

Question 28

Determine the price elasticity of demand if the price of yam tuber rises by 10% (0.1) and the quantity demanded falls by 5% (0.05)

Accepted Answer

A. 0.5

Answer

B. 0.4

Answer

C. 0.3

Answer

D. 0.1

Question 29

Lost soil nutrients can be replenished by the following methods except

Accepted Answer

C. continuous grazing

Answer

A. organic manuring

Answer

B. fertilizer application

Answer

D. cover cropping

Question 30

The process of removing excess maize seedlings from a stand is known as

Accepted Answer

C. thinning

Answer

A. pruning

Answer

B. supplying

Answer

D. wedding

Question 31

In the carbon cycle, carbon dioxide in the air may be replenished by

Accepted Answer

A. respiration

Answer

B. transpiration

Answer

C. lighting

Answer

D. denitrification

Question 32

Which of the following statements is not correct about agriculture in most West African countries?

Accepted Answer

B. fuel

Answer

A. employment

Answer

C. food

Answer

D. income

Question 33

The surveying instrument used for measuring horizontal and vertical angles is called

Accepted Answer

A. theodolite

Answer

B. Gunter's chain

Answer

C. offset staff

Answer

D. arrow

Question 34

Which of the following statement is a disadvantages of decaying organic matter in soils?

Accepted Answer

A. Bacterals and fungal growth is enhanced

Answer

B. minerals in organic matter are released into the soil

Answer

C. physical condition of soil is enhanced

Answer

D. water-holding capacity of soil is improved

Question 35

Which of the following activities is not a marketing function?

Accepted Answer

B. planting of crops

Answer

A. Buying of agricultural commodities

Answer

C. transporting of farm produce

Answer

D. storgae of farm produce

Question 36

The use of parasites and predators to control weeds is referred to as

Accepted Answer

A. biological control

Answer

B. chemical control

Answer

C. cultural control

Answer

D. mechanical control

Question 37

Forest resources can be managed by the following measures except

Accepted Answer

C. promoting deforestation

Answer

A. taungya farming

Answer

B. selectiveexploitation

Answer

D. preventing bush burning

Question 38

Ruminants fed on dried grasses are given feed supplements to

Accepted Answer

D. provide deficient nutrients

Answer

A. increase water intake

Answer

B. provide bulk to feed

Answer

C. reduce microbial activity

Question 39

A disadvantage of natural incubation is that

Accepted Answer

C. the brooding hens sometimes abandon the eggs

Answer

A. the eggs cannot be candled

Answer

B. the chicks are less healthy

Answer

D. it takes a longer time for eggs to hatch

Question 40

Quarantine regulations are established so as to

Accepted Answer

B. prevent the introduction foreign diseases into country

Answer

A. allow the importation of diseased plant and animal materials

Answer

C. assist farmers to grow foreign crops

Answer

D. facilitates the rapid spread of foreign diseases

Question 41

The cattle disease which is likely to be most common in the forest belt of West Africa is

Accepted Answer

B. trypanosomiasis

Answer

A. foot and mouth

Answer

C. anthrax

Answer

D. tuberculosis

Question 42

Irrigation can be described as the

Accepted Answer

D. application of water to the soil

Answer

A. reduction of soil water

Answer

B. spraying of minerals on plants

Answer

C. application of dissolved fertilizers to the soil

Question 43

The most limiting factor affecting land availability for agriculture in urban settlements is

Accepted Answer

D. population pressure

Answer

A. soil type

Answer

B. topography

Answer

C. climate

Question 44

Which of the following crops requires shade at the early stage of is growth?

Accepted Answer

C. Cocoa

Answer

A. Plantain

Answer

B. Banana

Answer

D. Sugarcane

2016 WAEC (WASSCE) Agricultural Science Past Questions

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