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2024 NECO GCE Biology Expo/Runs Questions and Answers

IyieriobaBy Updated: Education No Comments11 Mins Read

NECO GCE Biology (Practical, Essay, and Objectives) Exam Questions and Answers 2024. Boost your grades in the 2024 Neco GCE Biology questions and answers with early access to Obj/Essay, Expo Runs (Runz) Support.

The 2024 Neco GCE (Nov/Dec) Biology Practical Exam is scheduled to hold on Friday, 29th November, 2024. All Neco GCE Biology Practical questions and answers for 2024 are available.

This post covers everything you need to know about the 2024 Neco GCE Biology runs, including:

  • Neco GCE Biology Practical Expo
  • 2024 Neco GCE Biology Questions and Answers
  • Neco GCE Biology 2024/2025 Runs
  • Biology GCE WAEC 2024/2025 Expo
  • Neco GCE Biology Essay and Objectives Answers 2024
  • Neco GCE Biology Theory Runs 2024
  • Neco SSCE Nov/Dec GCE Biology Expo 2024
  • 2024 NECO GCE Biology Expo/Runs Questions and Answers

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NECO GCE Biology Expo/Runs Questions and Answers 2024

Looking for a reliable source for the 2024 Neco GCE Biology Questions and Answers? GCE Nov/Dec Biology (Practical, Essay, and Objectives) Expo Questions and Answers are accessible.

NECO GCE Biology Obj Answers 2024

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BIOLOGY

 

01-10: ACACEEDDDB

11-20: DADBADAAEA

21-30: DBAABDEBEA

31-40: CACCCDCBCD

41-50: ABAECEBEDB

51-60: BBBBCCCBBB

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NECO GCE Biology Essay Answers 2024

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NUMBER ONE

(1a)
(PICK ANY FOUR)
(i) Acting as antioxidants to protect cells from damage
(ii) Supporting immune function for overall health
(iii) Helping in the production of red blood cells
(iv) Aiding in the maintenance of healthy skin, hair, and nails
(v) Playing a role in energy production and metabolism
(vi) Supporting bone health and calcium absorption

(1b)
Fruit formation begins with the fertilization of the ovule in the flower, leading to the development of the seed within the ovary. The ovary then begins to grow and mature into a fruit, surrounding and protecting the developing seeds. As the fruit matures, it undergoes changes in size, color, texture, and taste to attract animals for seed dispersal. Once the fruit is fully mature, it is ready to be dispersed, allowing the seeds to be spread and germinate in new locations.

(1ci)
(PICK ANY FIVE)
(i) Singing or vocalizations
(ii) Displays of colorful plumage or markings
(iii) Ritualized movements or dances
(iv) Exchanging gifts or food offerings
(v) Pheromone releases or scents
(vi) Aggressive or territorial behaviors

(1cii)
(PICK ANY FOUR)
(i) Thin and moist to allow for efficient gas exchange
(ii) Large surface area to maximize the exchange of gases
(iii) Well-vascularized to facilitate the transport of gases
(iv) Protected from dehydration or damage
(v) Permeable to gases like oxygen and carbon dioxide
(vi) Adapted to the specific environment and respiratory needs of the organism

(1ciii)
(PICK ANY THREE)
(i) Stomata on the leaves
(ii) Lenticels on stems and bark
(iii) Root hairs
(iv) Hydathodes at leaf margins
(v) Air spaces within the plant tissues
(vi) Cuticles on the surface of leaves
[02/12, 07:04] Obatoke Rotimi Emmanuel: *NECO GCE BIOLOGY*

*NUMBER TWO*

(2a)
(i) Muscle Contraction: When a person wants to bend their lower arm, the brain sends signals to the muscles in the arm to contract. This contraction shortens the muscle fibers, pulling on the tendons and causing movement at the elbow joint.
(ii) Joint Movement: The bending motion at the elbow joint is primarily due to the contraction of the biceps muscles. These muscles pull on the radius bone, causing it to move towards the humerus bone, resulting in the bending of the arm.
(iii) Antagonistic Muscles: To straighten the lower arm, the triceps muscles contract while the biceps muscles relax. This antagonistic muscle action allows for the extension of the arm at the elbow joint.
(iv) Nerve Signaling: Nerves play a crucial role in coordinating the muscle contractions needed for bending and straightening the arm. The brain sends signals through the nervous system to activate the appropriate muscles for the desired movement.
(v) Tendon Function: Tendons connect muscles to bones and transmit the force generated by muscle contractions to produce movement. In the lower arm, tendons play a vital role in transmitting the pulling force of muscles to bend and straighten the arm.
(vi) Joint Structure: The elbow joint’s anatomy, including the hinge joint formed by the humerus, radius, and ulna bones, enables the bending and straightening motion of the lower arm.

(2b)
Check the diagram below

(2ci)
(PICK ANY TWO)
(i) Parasites derive nutrients from living hosts While Saprophytes obtain nutrients from decaying organic matter.
(ii) Parasites harm their host while obtaining nutrients While Saprophytes decompose dead matter without harming living organisms.
(iii) Parasites rely on a living host for their nutritional needs While Saprophytes feed on dead and decaying organic material.
(iv) Parasites are dependent on their host for survival While Saprophytes can survive independently of other organisms.
(v) Parasites have special adaptations for attaching to hosts and obtaining nutrients While Saprophytes have enzymes for breaking down complex organic matter.
(vi) Parasites can weaken or harm their host, potentially leading to disease While Saprophytes help in the recycling of nutrients and enriching the soil.

(2cii)
(PICK ANY TWO)
(i) Dodder
(ii) Mistletoe
(iii) Rafflesia
(iv) Witchweed
(v) Broomrape
(vi) Indian Paintbrush

*NECO GCE BIOLOGY*

*NUMBER FOUR*

(4ai)
A balanced diet is a diet that contains all the essential nutrients in the right proportions to maintain good health and proper functioning of the body.

(4aii)
[Draw the diagram]
Reticulate venation refers to a vein arrangement in which the veins form a complex network resembling a web or net. This type of venation is characteristic of dicotyledonous plants (dicots). A prominent midrib runs through the center of the leaf, from which lateral veins branch out. These lateral veins further divide into smaller veins called veinlets, creating the net-like pattern. Example of a plant with reticulate venation is the peepal tree (Ficus religiosa) or rose (Rosa indica).

(4bi)
(PICK ANY FIVE)
(i) Thick cuticle to reduce water loss.
(ii) Reduced leaf surface area to minimize water loss through transpiration.
(iii) Succulent stems or leaves to store water.
(iv) Deep and extensive root systems to absorb water efficiently.
(v) Hairy or waxy coatings to reflect sunlight and reduce water loss.
(vi) CAM (Crassulacean Acid Metabolism) photosynthesis to minimize water loss during the day.
(vii) Ability to go dormant during dry periods.
(viii) Spines or thorns to reduce water loss and protect against herbivores.

(4bii)
(PICK ANY THREE)
(i) Fixed joints
(ii) Freely movable joints
(iii) Slightly movable joints

(4ci)
(PICK ANY FOUR)
(i) Photosynthesis
(ii) Parasitic
(iii) Saprophytic
(iv) Holoparasitic
(v) Mixotrophic
(vi) Symbiotic

(4cii)
(PICK ANY TWO)
(i) Receptacle
(ii) Sepal
(iii) Petal
(iv) Stamen
(v) Pistil
(vi) Ovary

*NECO GCE BIOLOGY*

*NUMBER FIVE*

(5ai)
(i) Hypogeal germination
(ii) Epigeal germination

(5aii)
(PICK ANY FIVE)
(i) Auxins
(ii) Gibberellins
(iii) Cytokinins
(iv) Abscisic acid
(v) Ethylene
(vi) Brassinosteroids

(5b)
(i) Sweating: Sweat glands release sweat onto the skin. As the sweat evaporates, it absorbs heat from the body, cooling it down.
(ii) Vasodilation: Blood vessels near the skin surface widen, increasing blood flow to the skin. This allows more heat to escape through radiation, convection, and conduction.
(iii) Decreased Metabolic Rate: The body reduces its metabolic activity to limit internal heat production.
(iv) Behavioral Adjustments: Actions like seeking shade, reducing physical activity, or drinking water help cool the body.
(v) Panting or Heavy Breathing: Though less common in humans, rapid breathing increases heat loss through evaporation from the respiratory tract.

(5ci)
Draw the diagram below

(5cii)
(PICK ANY TWO)
(i) Lions
(ii) Tigers
(iii) Wolves
(iv) Cheetahs
(v) Eagles
(vi) Sharks

NECO GCE Biology Practical Answers 2024

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BIOLOGY PRACTICAL-ANSWERS
(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
 
 
++++++++++++++++++++++
 
(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

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