WAEC Biology Practical Questions and Answers 2021 Free Theory and Objective

WAEC Biology Practical Questions and Answers 2021 – verified WAEC Biology practical 2021 expo and biology specimen. 

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= 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
A – Neck
B – Chest
C – Upper abdominal region of the body
A – It aids the odontoid process of the head
B – It aid the attachment of ribs
C – It bears majority of body weight
(i) Neural canal; It allows the passage of the spinal cord
(ii) Centrum; It is a solid piece of bone found below the neural canal
(iii) Transverse process; It aids the attachment of muscle and ligaments
(iv) Neural spine; The aids the attachment of muscles
A – 7
B – 12
C – 6
(i)Sacral vertebrae
(ii) Caudale vertebrae
[17/09, 10:24] Ogabido: (4ai)
L – Arthropoda
M – Arthropoda
L – Insecta
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

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