2022 WAEC: Verified Agricultural Science Practical Expo/Anwers/Runz

FREE WAEC 2017 AGRIC PRACTICAL ANSWERS.

(1ai)
A: calcium
B: protein

(1aii)
A:
-it provides support for animals
-it gives shapes to animal
-it is essential in storage of nutrient
B:

-animals use it for defence
-it enhance the appearance of animals
-it is used in decorating homes
C:
-it is used to attack
-when decay, it turns to manure
-for manufacturing of guns and buttons

(1bi)
-it is used by crops for normal growth
-it is consumed by man and animals, therefore
it is essential for body growth

(1bii)
-it prevent erosion and leaching
-it adds nitrogen to the soil through bacteria

(2a)
G: Ageratum onizoids
H: Sida acuta
I: Imperata cylindara
J: Pennisetum purpureum
K: Boerhavia diffusa

(2b)
I:
-it resist burning because it posseses
succulent rhizomes which have high water
content located underground.
J:
it germinates more during the rainy season
and the seeds remain intact during the dry
season
K:
it has a high resistivity to drought and even
during dry season, they still germinate

(2c)
-they are consumed by livestock
-they can be used for medicinal purposes

(2d)
-they can b consumed by livestock
-they can b used as compact materials
-they can be used for medicinal purposes
-they serve as manure
-they are weeds

3a)
P:
-to indicate light in the farm house
-to create heat for the young chicks
Q:
-for digging the soil
-for loosening of the hard p soil
R:
-for transplanting of seedling
-for weeding nursery beds

(3b)
-wear and tear during friction
-rusting of the metal part
-blockage of the pipe for spraying.

(3c)
-protective gloves
-overall rain coat/jacket
-nose guard

(3d)
-store in cool and dry places after use
-replace any damage parts when required
-clean and wash after use