WAEC 2021 Biology Practical Question And Answer Now Available

WAEC 2021 Biology Answer-WakaGist.Com

A – Neck region
B – Chest region
C – Upper abdomen region

A – It provides mobility and stability to the head while connecting it to the relatively immobile thoracic spine.
B – It holds the rib cage and protects the heart and lungs
C – It supports the weight of the body and allow certain movements, such as lifting objects.


(i) Transverse process – Functions as the site of attachment for muscles and ligaments of the spine as well as the point of articulation of the ribs
(ii) Centrum – IIt supports most of the body’s weight.
(iii) Neural spine – It receives sensory messages from tiny nerves
(iv) Neural canal – It allows the passage of the spinal cord

A – 7
B – 12
C – 5

(i) Sacral vertebrae
(ii) Caudale vertebrae



= D
-Two observation-
(i) Gives greenish leaves
(ii) Gives a growing seedlings

Positive growth

= E
-Two observation-
(i) No growth observed
(ii) Wet soil

Negative growth

= F
-Two observation-
(i) No growth observed
(ii) Dey soil

Negative growth

= G
-Two observation-
(i) No growth observed
(ii) Extremely dry soil

Negative growth

E – Excess water
F – Depletion of soil nutrient
G – Absence of water or soil moisture

(i) Well ventilated soil
(ii) Good and rich in nutrient soil



SPECIMEN L – Arthropoda
SPECIMEN M – Arthropoda

SPECIMEN L – Insecta
SPECIMEN M – Insecta

(i)They have an exoskeleton or a hard, shell-like covering on the outside of its body.
(ii)Insects have three main body parts: head, thorax, and abdomen.
(iii)Insects have a pair of antennae on top of their heads.


(i)moveable head
(ii)stagnant water

(i)oversized compound eyes

(i)Controlled by Mosquito Traps
(ii)Controlled by Space sprays
(iii)Controlled by Mechanical Barriers
(iv)Controlled by
Vegetation Management.
(v)Controlled by outdoor measures.


(i) Smaller in size
(ii) A Pair of wings
(iii) Absence of hard hind wings
(iv) Absence of maxillary palp/maxilla
(iv) Absence of spines on legs

(i) Big in size
(ii) Two pairs of wings
(iii) Presence of hard hind wings
(iv) Presence of maxillary palp/maxilla
(v) Presence of spines on legs

*(i) It carries disease vector that causes malaria*
*(ii) The larva serves as food to aquatic organisms*

*(i) The caterpillar of specimen M destroys vegetable crops*
*(ii) It helps in pollination*

SPECIMEN L – Stagnant water
SPECIMEN M – Grasslands

Be the first to comment

Leave a Reply

Your email address will not be published.