WSSCE2018/2019- WAEC biology pratical 2018

WAEC biology pratical 2018

WAEC biology pratical 2018

WAEC biology pratical 2018

1ai)

A- lives in stagnant water

B- lives in Leftovers food

1aii)

A- into mosquito 

B- into fly

More coming

 

WAEC biology pratical 2018

 

WAEC biology pratical 2018

WAEC biology pratical 2018

Specimen A- Mosquito Larva

Specimen B - Maggot

Specimen C- Gill of fish

Specimen D- Lung of animal

specimen E - water leaf

Specimen F- wing of crockroach

Specimen K- flower of pride of Barbados

Specimen M - Hibiscus Flower

Specimen L- Guinea Grass

==> A - - - Mosquito Larva

CLASSIFICATION OF MOSQUITO

Kingdom - Animalia

Habitat - Aquatic

Phylum - Arthropod

Class - Insecta

order - Lepidoptera

Metamorphosis - Complete

Stage - Larva

CLICK HERE TO SEE THE DIAGRAM OF

MOSQUITO LARVA

OBSERVABLE FEATURES

- possesses segmental Bodies

- three body division

- possess eye for sight

- possesses antenna for feeling

ECONOMICS IMPORTANCE

- Source of food for fish

- it is use in the laboratory for experiment

-Adult stage is a vector for malaria

==>B - - - MAGGOT

CLASSIFICATION OF MAGGOT

Kingdom - Animalia

Phylum - Arthropod

Class - Insecta

Order- Diptera

Metamorphosis- Complete

Habitat- Moist environment

CLICK HERE TO SEE THE DIAGRAM OF

SPECIMEN B(MAGGOT)

OBSERVABLE FEATURES

- It is whitish in colour

-It is segmented

- it has a pointed ends

-It has an Anterior and posterior Spiracle

-it has a proLegs

ECONOMIC IMPORTANCE OF SPECIMEN B

- It helps in decomposition

- Source of food for fish

- It provides Nutrient for soil

- source of food for fowl

SIMILARITIES BETWEEN A & B

- They both have segmented body

- They have breathing organs

DIFFERENCES BETWEEN A & B

A B

Has probosis No Probosis

Has eyes No eye

Has an antenna No antenna

Three Body divisions No body division

Smaller in size Bigger in size

==>C - - - GILL OF FISH

Source - fish

Class- Pisces

CLICK HERE TO SEE THE DIAGRAM OF FISH

GILL

CLASSIFICATION OF C

- it is well supplied with blood

- It is always wet

- It is a delicate cell

- it has large surface area to volume ratio

- It has a ton cell

==> D - - - LUNG OF ANIMAL

Source - Animal

CHARACTERISTICS OF D

as that of fish (Gill of fish)

CLICK HERE TO SEE THE DIAGRAM OF LUNG

OF ANIMAL

SIMILARITIES OF C & D

- They are used for gaseous exchange.

- They are well supplied with blood

- They are always wet

- They are delicate cell.

==> -E - - - WATER LEAF ( Talinum triangulae)

- It is chcotyledonous plant

- It has net work variation.

- it has tap root

- It has ring vascular bundle.

==> F - - - WING OF CROCKROACH

CLICK HERE TO SEE THE DIAGRAM OF

CROCKROACH WING

- It is use for flight

- it is not thick

- it has network variation

CLICK HERE TO SEE THE DIAGRAM OF

SPECIMEN K

==> L - - - GUINEA GRASS

DESCRIPTION OF L

-it is monocotyledonous plant

- It has parallel variation

- It has fibrous root

- it has scattered vascular bundle

CLICK HERE TO SEE THE DIAM OF SPECIMEN M

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WAEC biology pratical 2018

(2ai)

C - Fish 

D - Mammal

E - Flowering plant 

(2aii) 

They are used for respiration. 

(2aiii) 

(i) Possession of two rows of fine finger like Gill filament. 

(ii) Possession of gill rakers. 

(iii) Possession of richly supplied blood capillaries. 

(2bi)

(i) Both are supplied with blood capillaries. 

(ii) Both of them are used for respiration. 

(2bii)

In a tabular form; Specimen C and specimen D

Under specimen C

(i) Possession of gill rakers. 

(ii) Possession of gill filament.

(iii) Possession of gill arch.

Under specimen D

(i) Possession of bronchus.

(ii) Possession of alveoli. 

(iii) Possession of alveolar cavity.

(2c)

Draw the 6cm-8cm long of specimen C ie Gill of fish

WAEC biology pratical 2018

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