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Waec 2019 Biology Practical 3 Answers Now Available – Free Exam Expo

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Waec 2019 Biology Practical 3 Answers Now Available – Free Exam Expo


Waec 2019 Biology Practical 3 Answers Now Available – Free Exam Expo



(2ai)
Kingdom – Animalia
Class – Aves

(2aii)
The specific location is the wings.

(2aiii)
Fowl

(2b)
In a tabular form
Under Specimen H
-Light brownish in colour
-Obtained from animal.
-The barbs are joined.
-The shaft is made of cuticle.
-It acts as an organ of insertion.
-specimen is soft and fluffy.

Specimen J
-Green in colour.
-Obtained from a plant.
-Each leaf is separate from one another.
-The shaft is made of wood.
-Acts as an organ of photosynthesis.
-Specimen is hard.

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

====================

(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

A young intelligent blogger, article composer, internet marketer and a promoter by name Sheidu Mohammed Awwal. Studying Biochemistry at KSU.

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