WAEC 2019 Biology Practical Answer Now Available

(1a)
The branch of biology that involves the use of specimen A, B, C, D, E and F is ecology.

TRENDINGWAEC 2019 Mathematics Obj And Essay Answer Now Available

1b) Functions

SPECIMEN A:

They are used to measure the temperatures of different metals, liquids, gases and other materials.

Specimen B:

Rain gauge are used to measure rainfall.

Specimen C:

It is used to measure length of different objects.

Specimen D:

Sweep nets are used to collect arthropods such as insects from long grass and other types of vegetation.

Specimen E:

It is used to indicate the direction of the wind.

(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)
DARWING

(1e)
Specimen D
(i) Small aquatic organisms eg Amoeba
(ii) Small insects eg mosquito.

Specimen F
(i) Plants specie in a grassland eg spear grass.
(ii) Animal specie in a grassland he grasshopper.
===========================
READ MOREUPDATED: NECO Time Table 2019  June/July

(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.

2d) it has strong shaft used for protection
– it has rachis to keep the body warm
– presences of umbilicus to keep the body warm

(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.
==============================
==
READ ALSO: WAEC 2019 Literature in English Drama And Poetry Answer Now Available

(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

Give Us a Helping hand By Inviting Ur Friends Here

Completed….

If You Think This Post Can Be Helpful To Somebody Else, Please Share It On Twitter, Facebook, G+, Whatsapp Or Advertise Us. There Are Buttons Below For This (easy to use too)!

Leave a Reply

Your email address will not be published.