WAEC 2019 BIOLOGY PRACTICAL VERIFIED ANSWER

(Biology Practical Answer)

(1a)

The branch of biology that involves the use of specimen A, B,C,D,E and F is ecology

(1b)

A – use for measuring temperature or determine the degree of hottest or coldness of the an object/organ/organism

B- for measuring the amount and volume of rainfall in an ecosystem

C – (i) to measure the length, height and width of an object /length

(ii)to measure the growth rate of ab organism 

D- for collecting insect/creeping and crawling animal

E – for finding wind direction

F – To establish population of plants in an ecosystem

(1c)

B – The specimen is stationed above ground on an open space. After rainfall, the volume of water found in the glass bottle is measured with a cylinder as the volume of rainfall 

D – The net is skimmed on the water surface so as to collect the desired specimen

(1d)

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(1e)

Specimen D

(i)housefly

(ii) grasshopper 

Specimen F

(i)housefly

(ii)mosquito

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(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.

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

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(4ai)
Sex of specimen P is Male

(4aii)
The wings of male cockroach are larger than that of the females and extend beyond the abdomen.

(4bi)
Habitats
P – It can be found in dark place.
Q – It can be found in farm lands.

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

Adaptation of Q
(i) Possession of chitinous body cover for protection.
(ii) Presence of wings for flight.
(iii) Mandibular mouth part for chewing.

(4c)
In a tabular form:
Specimen P
Dorso-ventrally flattened to allow passage through cracks.

Specimen Q
Possession of chitinous body cover for protection.

Posted by admin on 9th May 2019.

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Categories: WAEC