2019 Waec Biology Practical Answers

2019 Waec English Answers - May/June Expo

(2ai)
Kingdom – Animalia
Class – Aves

(2aii)
The specific location is the wings.

(2aiii)
Fowl

2b) Tablute

H(Qudl feather)

– Presenxe of inferior umbiicus

– Presence of shaft

– Presence of Qudl

– Speciment H is shorter

– Leave sheath is absent

– Surface is feathery

J (Palm frond)

– Absence of umbilicus

– Absence of shaft

– Absence of Qudl

– Speciment J is longer

– Presence of leave sheath

– Surface is smooth

(2bii)
(i) Both have shaft
(ii) Both have vane
(iii) Both have rachis

(2c)
H – It is used for flying.
J – it is used for photosynthesis.

(2di)
The light weight of the specimen.
The streamlined structure.
The smoothness of the vane.

(2dii)
Presence of green colouring material(chlorophyll).
Its position on the body of the plant.

========
(4)
(i) Sex of specimen P – male cockroach
(ii) there is presence of jointed appendages legs

(4b)
P – it can be found in increvices
A – It can be found in an open field, farm land

(4bii)
Adaptation of P
Possession of antenna for detecting food
Compound eye for wider view
Possession of jointed pair of legs

(4biii) Adaptation of Q
Possession of Chitinous body cover for protection
Presence of wings for flight
Mandibuate mouth part for chewing

(4c)
Structural difference between P and Q
TABULATE:

SPECIMEN P:
Dorsa ventrally flattened to allow passage through cracks

SPECIMEN Q:
Possesion of chitinous body covers for protection

(4cii)
(i) Both have antenae
(ii) Both possesses flying wings
(iii) Both have chewing mouth parts

(4di)
Biting and chewing

(4dii)
Grass or leaves

(4e)
DRAWING

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