2024 NECO GCE Biology Practical

NECO BIOLOGY PRACTICAL

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NUMBER ONE

(1ai)
A – simple pendulum
B – magnetic compass
C – protractor
D – Rectangular prism or cuboid
E – funnel

(1aii)
I – String/Thread of the pendulum
II – Bob of the pendulum
III – Base line (on the protractor)
IV – Degrees/Scale markings (on the protractor)
V – Grid lines (on the rectangular prism)

(1aiii)
A:
(PICK ANY ONE)
(i) Measuring acceleration due to gravity.
(ii) Demonstrating harmonic motion.
(iii) Used in pendulum clocks for timekeeping.
(iv) Studying damping effects in physics experiments.
(v) Training aids for physics students.

B:
(PICK ANY ONE)
(i) Navigation and orientation in outdoor expeditions.
(ii) Surveying land.
(iii) Used in geology to find the direction of magnetic fields.
(iv) Teaching tool for geography and science.
(v) Determining cardinal directions (north, south, east, west).

C:
(PICK ANY ONE)
(i) Measuring and drawing angles in geometry.
(ii) Used in engineering drawings and blueprints.
(iii) Teaching tool for trigonometry and mathematics.
(iv) Helps in making angular cuts in construction and carpentry.
(v) Used in art and design to create precise patterns.

D:
(PICK ANY ONE)
(i) Demonstrating three-dimensional shapes in geometry.
(ii) Modeling and measuring objects in architecture.
(iii) Used in physics for studying light refraction and reflection.
(iv) Teaching volume and surface area calculations in mathematics.
(v) Packaging design for storing goods.

E:
(PICK ANY ONE)
(i) Measuring volumes of liquids in experiments.
(ii) Transferring liquids during filtration processes.
(iii) Collecting samples in ecological studies.
(iv) Used in chemical reactions for mixing substances.
(v) Pouring liquids with precision in cooking or laboratory work.

(1bi)
In Tabular form

F:
Example of food – Nectar.
Example of organism – Butterfly.

G:
Example of food – Plant material such as leaves.
Example of organism – Grasshopper.

H:
Example of food – Blood.
Example of organism – Mosquito.

(1bii)
In a Tabular form

G:
(PICK ANY TWO)
(i) Has strong mandibles for chewing.
(ii) Short antennae.
(iii) Possesses large hind legs adapted for jumping.
(iv) Simple mouthparts designed for biting and grinding.
(v) Wings are leathery and protective.

H:
(PICK ANY TWO)
(i) Has a long proboscis for piercing and sucking.
(ii) Long antennae.
(iii) Thin legs adapted for clinging onto hosts.
(iv) Mouthparts specialized for sucking fluids.
(v) Wings are delicate and adapted for flying.

(1ci)
I – Paramecium
J – Euglena

(1cii)
II – Cilia
III – Flagellum

(1ciii)
J – Freshwater or stagnant water

NUMBER TWO

(2ai)
K – Scapula
L – Sternum
M – Pelvis
N – Sacrum
O – Coccyx
P – Femur

(2aii)
K – Shoulder region
M – Hip region
N – Lower back

(2aiii)
I:
(PICK ANY ONE)
(i) Provides attachment for muscles that facilitate arm movement.
(ii) Acts as a base for the shoulder joint, aiding in mobility and stability.
(iii) Protects vital structures such as nerves and blood vessels passing near the shoulder.
(iv) Transmits forces from the upper limb to the axial skeleton.

II:
(PICK ANY ONE)
(i) Protects the heart and lungs from physical damage.
(ii) Provides attachment points for ribs and clavicle.
(iii) Assists in the mechanics of breathing by supporting rib cage movement.
(iv) Acts as a site for bone marrow sampling due to its central location.

III:
(PICK ANY ONE)
(i) Supports the weight of the upper body when sitting or standing.
(ii) Protects internal organs such as the bladder and reproductive organs.
(iii) Serves as the attachment point for muscles of the abdomen and lower limbs.
(iv) Assists in childbirth by forming the birth canal.

IV:
(PICK ANY ONE)
(i) Supports the weight of the body during movement and standing.
(ii) Acts as a lever to enhance the strength of lower limb movements.
(iii) Protects the bone marrow involved in producing red blood cells.
(v) Connects the hip to the knee, forming part of the leg’s locomotion system.

(2bi)
Q – Earthworm
R – Tick
S – Housefly

(2bii)
Q – Annelida
R – Arachnida
S – Insecta

(2biii)
In Tabular form

R:
(PICK ANY THREE)
(i) Has no antennae, unlike insects.
(ii) Feeds on blood by piercing the host’s skin.
(iii) Lacks compound eyes; may have simple eyes or be blind.
(iv) Body is covered with a tough exoskeleton to resist desiccation.

S:
(PICK ANY THREE)
(i) Possesses antennae used for sensory detection.
(ii) Feeds on liquid or semi-liquid substances, often using sponging mouthparts.
(iii) Has large compound eyes for better visual perception.
(iv) Body is less hardened and adapted for rapid flight.

(3ai)
T: Longitudinal section of a monocot seed
V: Mango fruit (longitudinal section)
U: Rhizome(Ginger)

(3aii)
T – Varies by species (Annual, Biennial, or Perennial).
U – Perennial.
V – Perennial.

(3bi)
I. Cotyledon
II. Plumule
III. Adventitious root
V. Seed
VI. Crop

(3bii)
TABULATE

Monocot Seed (T):
(i) Contains seed coat, embryo, and endosperm.
(ii) Endosperm is prominent

Mango Fruit (V):
(i) Has fleshy pulp and a hard seed (stone) inside.
(ii) No endosperm, just fruit flesh

(3biii)
T – sexual propagation
U – Vegetative propagation

(3ci)
W – Chicken digestive system
X – Ascaris lumbricoides:

(3cii)
The type of association that may exist between W (chicken digestive system) and X (Ascaris lumbricoides) is parasitism, where Ascaris lumbricoides lives in the chicken’s digestive system and benefits at the expense of the host.

(3ciii)
(i) Diarrhea or poor fecal consistency
(ii) Weight loss or poor growth

(3civ)
III: Adventitious Root – It helps in the absorption of water and nutrients from the soil, and in some plants, it provides additional support to the plant.

VI: Crop – In birds, the crop temporarily stores food before it is digested further in the stomach.

VII: Small Intestine – The small intestine is responsible for the majority of nutrient absorption during digestion.