2025 NECO GCE BIOLOGY: 2025 NECO GCE BIOLOGY PRACTICAL QUESTIONS AND ANSWERS (9149)

(1ai)

A - Housefly 

B - Spider

(1aii)

A - Insecta

B - Arachnida

(1aiii)

A:

(i) It has three pairs of legs

(ii) Possession of three body segment 

B:

(i) It has four pairs of legs

(ii) Possession of two body segment

(1aiv)

I - Antennae 

II - Eye

III - Hind leg

IV - Leg

V - Cephalothorax 

VI - Abdomen

(1av)

I - For sensitivity

II - For sight

III - For movement 

(1avi)

Tabulate

A:

(i) Possession of wings

(ii) Possession of compound eyes

B:

(i) Absence of wings

(ii) Possession of simple eyes 

(1avii)

(i) Head

(ii) Thorax

(iii) Abdomen

(1aviii)

(i) Wing

(ii) Mouthpart

(1bi)

Oxygen

(1bii)

(i) The experiment must be done during the day.

(ii) There must be presence of water.

(1bii)

Experiment to show that oxygen is liberated during photosynthesis.

(2ai)
D - Maize seedling plant
E - Monocot root

(2aii)
I - Tassel
II - Flag leaf
III - Leaf
IV - Styles
V - Female inflorescence

(2aiii)
Tassel, female inflorescence, ovary

(2bi)
VII

(2bii)
Phloem

(2biii)
VI

(2ci)
VII
(i) Absorption of water and nutrient
(ii) It provides support

VIII
(i) Maximise the roots water
(ii) Absorption of mineral

(2cii)
(i) They possesses long stigma
(ii) Possession of feathery flowers
(iii) Possession if one reproductive organ

(2di)
F - Webbed feet
G - Non webbed feet

(2dii)
I - Hind toe
II - Web foot
III - Claw

(2diii)
It enables them to float on water

(3ai)
H - Microscope
I - Filoplume feather

(3aii)
I - Lens
II - Coarse focusing mechanism
III - Objective lens
IV - Arm

(3aiii)
1 - Paramecium
2 - Bacteria

(3aiv)
(1) Wet it dirty slides should never be out on the stage
(2) Never use a dry cloth or paper towel to wipe optical surface or lens

(3av)
(1) Always use two hands when using the microscope
(2) Make sure the microscope is not plugged in before moving it
(3) When the microscope is not in use cover it with a dust cover or store in a microscopic case

(3bi)
VIII - Outer web or vane
IX - Barbs
X - Rachis it shaft

(3bii)
Pigeons

(3biii)
(i) It is used for flight
(ii) To consume body heat
(iii) It is also used for social display