2020/2021 WAEC/NECO Answers: Neco Gce 2021. Biology practical answers

Neco Gce biology practical Portal 

(1a) 

A–Hygrometer

B–Anemometer

C–Light meter

D–Rain gvage

E–Wind vane

(1aii)

A–it is used to measure relative humidity.

B–it is used to measure the speed of wind. 

C–it is used to measure light intensity on land 

D–it is used to measure the amount of rainfall

E–it is used to measure the direction of of wind.

(1b)

TABULATE:

UNDER I:

Example | Description | Use of beak

UNDER F:

Eagle |  the beak is short and cause to enable tear prey | it is used to hold prey firmly, it use to tag prey

UNDER G:

Cock | it is short and little curve | it is used to peck the food

UNDER H:

Duck | it is long and flat | it enable animal to sieve the food

(1c) 

(I) photosynthesis

(II) photosynthesis is defined as the process by which green plants manufactur their food making use of Co2 and water in the a presence of sunlight

(1civ)

Blowing splint

(1cv)

It is a controlled experiment

(1cvi)

An experiment to show that CO2 is absorbed while is giving out

(3ai) 

Q => Chtomdomena monoica

R => Euglena viridis

S => Amoeba preteus

T =>  Paramecium caudatus

(3aii)

I => flagellum

II => Pyrenoid

III => Eyespot

IV => Chloroplasts

V = Nucleus 

VI => Meganucleus

VII = Contractive Vacuole 

(3aiii) 

Q = flagellum

R= flagellum

S= pseudopodum

T= cilia 

(3aiv) 

I=> it use flagellum for movement 

III=> it use flagellum  for sighting 

v=> it contains cellular activities in the cell

vI=> it is used removal of excess water 

(3v) 

The three similries between Q and R are:- 

- Possession of flagellum

- possession of eye spot

- possession of nucleus

3vi)

The three difference between S and T are 

Under S:-

-  S is shapeless

- absence of cilia

- possession of pseudopodia

Under T:-

- T is slopper in shape

- possession of cilia 

- Absence of pseudopodia

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