NECO GCE Biology 2025 Past Questions & Answer OBJ/Theory

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Introduction

The NECO GCE Biology 2025 examination is one of the most crucial subjects for candidates in the sciences. Whether you’re aspiring to study medicine, pharmacy, nursing, microbiology, or agriculture, Biology plays a vital role in your academic journey. Preparing with NECO GCE Biology past questions and answers 2025 will help you understand the exam structure, common topics, and the kind of questions NECO frequently repeats.

NECO GCE Biology 2025 Past Questions & Answer OBJ/TheoryThis article provides practice questions and answers that can serve as a guide for revision. The aim is to help candidates prepare effectively, boost their confidence, and perform excellently in the examination.

Disclaimer: This content is strictly for educational and revision purposes only. It is not meant to promote examination malpractice. Students are encouraged to use these questions responsibly as part of their study and preparation for the NECO GCE Biology 2025 exam.

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Why You Should Practice NECO GCE Biology Past Questions

  1. Understand exam format – Get familiar with objective (OBJ), theory, and practical sections.

  2. Spot repeated topics – NECO often recycles questions across years.

  3. Time management – Learn how to answer within the allotted exam time.

  4. Confidence building – Practice reduces anxiety on exam day.

  5. Self-assessment – Identify your weak areas and improve on them.

Structure of NECO GCE Biology 2025 Exam

The NECO Biology paper is usually divided into three sections:

  • Paper I (Objectives/OBJ): Multiple-choice questions covering the full syllabus.

  • Paper II (Theory/Essay): Structured and essay-type questions requiring detailed answers.

  • Paper III (Practical): Identification, experiments, and drawing of specimens.

Sample NECO GCE Biology OBJ Questions 2025

  1. Which of the following is a characteristic of living organisms?
    A. Respiration
    B. Rusting
    C. Decay
    D. Burning

Answer: A. Respiration

  1. Which of the following blood components is responsible for transporting oxygen?
    A. Plasma
    B. Platelets
    C. Red blood cells
    D. White blood cells

Answer: C. Red blood cells

  1. The functional unit of the kidney is the:
    A. Nephron
    B. Neuron
    C. Alveolus
    D. Atrium

Answer: A. Nephron

  1. Which of the following organisms reproduces by binary fission?
    A. Amoeba
    B. Earthworm
    C. Mosquito
    D. Hydra

Answer: A. Amoeba

  1. The mode of nutrition in fungi is:
    A. Autotrophic
    B. Parasitic only
    C. Holozoic
    D. Saprophytic

Answer: D. Saprophytic

Sample NECO GCE Biology Theory Questions 2025

Question 1

Define photosynthesis and write a balanced chemical equation for the process.

Answer:
Photosynthesis is the process by which green plants manufacture their food (glucose) using carbon dioxide and water in the presence of sunlight and chlorophyll, releasing oxygen as a by-product.

Equation:
6CO2+6H2O→C6H12O6+6O26CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂

Question 2

List and explain three differences between arteries and veins.

Answer:

  • Arteries carry blood away from the heart; veins carry blood to the heart.

  • Arteries have thick, muscular walls to withstand high pressure; veins have thin walls with valves to prevent backflow.

  • Arteries usually carry oxygenated blood (except pulmonary artery); veins usually carry deoxygenated blood (except pulmonary vein).

Question 3

State four functions of the skeleton in animals.

Answer:

  1. Provides support for the body.

  2. Protects delicate internal organs (e.g., skull protects brain).

  3. Enables movement with muscles and joints.

  4. Produces blood cells in the bone marrow.

Question 4

List five differences between plant and animal cells.

Answer:

  • Plant cells have cell walls; animal cells do not.

  • Plant cells contain chloroplasts; animal cells do not.

  • Plant cells have a large central vacuole; animal cells have small vacuoles.

  • Plant cells are usually rectangular; animal cells are irregular/round.

  • Plant cells store food as starch; animal cells store food as glycogen.

Question 5

Explain the role of enzymes in digestion.

Answer:
Enzymes act as biological catalysts that speed up the breakdown of food molecules:

  • Amylase breaks down starch to maltose.

  • Protease (pepsin/trypsin) breaks down proteins to amino acids.

  • Lipase breaks down fats into fatty acids and glycerol.

Sample NECO GCE Biology Practical Questions 2025

  1. Identify and draw a labeled diagram of a hibiscus flower.

  2. Observe and record the external features of a cockroach.

  3. Test for the presence of starch in a given leaf using iodine solution.

  4. Differentiate between monocot and dicot seeds using provided specimens.

  5. Identify and state one function of the liver in mammals.

How to Use These Questions Effectively

  • Practice regularly with a timer to simulate exam conditions.

  • Revise answers using recommended Biology textbooks and NECO marking schemes.

  • Pay attention to diagrams and drawing practice (especially for practicals).

  • Form study groups for peer learning and discussions.

  • Revise the official syllabus alongside past questions for better coverage.

Conclusion

The NECO GCE Biology 2025 past questions and answers are an invaluable resource for all science candidates. By practicing consistently, studying the syllabus, and revising with discipline, you can increase your chances of achieving an excellent grade. Remember, success in Biology depends not only on memorization but also on understanding concepts and applying knowledge. Stay focused, practice often, and your effort will surely pay off.

VISIT NECO GCE OFFICIAL WEBSITE HERE;https://neco.gov.ng/

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