WAEC - Agricultural Science (2019)

1
Which of the following statements best describes commercial farming?
Answer
(B)
large scale agricultural production for sale
2
Which of the following problems are associated with agricultural marketing in West Africa? I.seasonality of produce II.Transportation of produce III.Access to credit 
Answer
(B)
I and III only
3
An advantage of communal land tenure system is that it?
Answer
(B)
makes land cheap to acquire
4
Which of the following implements is used for primary tillage?
Answer
(C)
plough
5

Study and answer this question below

 

A periodic maintenance activity carried out on the illustrated farm machinery is?

Answer
(C)
changing engine oil
6
A disadvantage of farm mechanization?
Answer
(B)
displacement of farm workers
7
Calculate in hectares the area of a rectangular farmland with dimensions 50m by 25m?
Answer
(D)
0.125ha
8
The practice of measuring and mapping out the size, position and boundary of a farmland is called farm?
Answer
(C)
surveying
9
Which of the following statement about land is not correct?
Answer
(D)
it can be relocated
10
A socio-cultural factor affecting land availability is?
Answer
(B)
religion
11
A biotic factor affecting agricultural production is?
Answer
(B)
predator
12
Which of the following groups of organisms are parasites plants?
Answer
(C)
Dodder, fungus and striga
13
The type of rock formed from accumulation of materials transported by water is called?
Answer
(A)
sedimentary rock
14
A fresh garden soil sample weighed 25kg. When oven-dried, its weight reduced to 20kg. Calculate the percentage moisture content of the soil sample.
Answer
(C)
20.0%
15
Which of the following mineral elements is essential for chlorophyll formation?
Answer
(D)
magnesium
16

Study and answer this question

The soil horizon that is not supportive of the growth of tree crops is?

Answer
(D)
horizonD
17
Liquid fertilizers and pesticides could be applied through?
Answer
(C)
sprinkler irrigation
18
In a crop rotation system, it is usually preferred that cassava comes last in the rotation because it?
Answer
(C)
is a deep rooted crop
19
The growing of only one crop on a piece of land from year to year is known as?
Answer
(C)
monoculture
20
In green manuring, crops are ploughed into the soil just before flowering in order to?
Answer
(B)
enrich the soil with nutrients
21
Corns, rhizomes and tubers are examples of?
Answer
(B)
underground stems
22
Which of the following statements is not a reason for budding? The resulting plants_______
Answer
(A)
can withstand adverse climatic conditions
23
Which of the following statements are advantages of mulching? it I.Controls weeds II.Conserves soil moisture. III.Increases soil temperature. IV.Reduces soil pH.
Answer
(A)
I and II
24
A planting material used in propagating plaintain is the?
Answer
(A)
crown
25
If maize seed is sown at a spacing of 100cm x 50cm, determine the expected maize plant population per hectare? 
Answer
(B)
20,000
26
Protective functions of forests include the following except
Answer
(D)
source of firewood
27
The growth of both trees and arable crops on the same piece of land is?
Answer
(D)
taungya system
28
Sexual propagation of omamental plants involves the use of?
Answer
(B)
seeds
29
The vector of leaf curl disease of cotton is?
Answer
(D)
white fly
30
A major storage pest of cereals in West Africa is?
Answer
(B)
weevil
31
Biological control of insect-pests of crops is carried out through?
Answer
(B)
use of predators
32
During the production of palm oil, the oil palm fruits are boiled in order to?
Answer
(D)
separate mesocarp from endocarp
33
Which of the following breeds of cattle is exotic?
Answer
(C)
friesian
34

The diagram above represents the digestive system of a?

Answer
(B)
cock
35

The main function of the part labelled I is?

Answer
(A)
temporary storage of food
36
Which of the following hormones is responsible for oestrus in farm animals?
Answer
(B)
oestrogen
37
In animal production, immature spermatozoa are stored in the?
Answer
(C)
epididymis
38
The least important factor for successful incubation of eggs is?
Answer
(A)
light
39
The wallow should be provided in the pen of pigs in order to?
Answer
(D)
cool the temperature of pigs
40

The data for feed consumption and weight gain of our four farm animals labelled P,Q,R and S are shown below.

Use the data to answer this question correctly 

P: 50kg feed consumed and 20kg weight gained.

Q: 90kg feed consumed and 30kg weight gained.

R: 100kg feed consumed and 25kg weight gained.

S: 150kg feed consumed and 30kg weight gained.

 

Which of the animals is the most efficient feed converter?

Answer
(A)
P
41

The data for feed consumption and weight gain of our four farm animals labelled P,Q,R and S are shown below.

Use the data to answer this question correctly 

P: 50kg feed consumed and 20kg weight gained.

Q: 90kg feed consumed and 30kg weight gained.

R: 100kg feed consumed and 25kg weight gained.

S: 150kg feed consumed and 30kg weight gained.

 

The feed conversion efficiency of the poorest weight gainer is?

Answer
(D)
0.20
42
Bone meal is usually included in the diet of livestock to supply?
Answer
(A)
calcium and phosphorus
43
Which of the  following statement about inbreeding in farm animal is/are false? I.Inbred animals reach market weight early II.Inbred animals have reduced vigour III.Inbreeding increases the occurrences of undesirable traits
Answer
(A)
I Only
44
Which of the following parasites may be found in the gut of livestock?
Answer
(C)
Roundworm
45
Vegetative growth in fish ponds?
Answer
(D)
moderates pond temperature