2023 Neco Gce Biology Objectives and Essay Questions and Answers.
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The Neco biology exam will comprise Papers III & II: Objective & Essay which will commence at 10.00 am to end at 12.30 pm. That means the examination will last for two hours thirty minutes (2hrs 30mins) only.
In this post, we will be posting samples of the neco biology questions for candidates that will participate in the examination for practice purposes.
QUESTIONS AND ANSWERS AVAILABLE
Absolutely, when it comes to preparing for the Biology section of the WAEC exam, it's essential to cover various topics comprehensively. Here's a guide focusing on crucial topics to study for success in the WAEC Biology exam:
Neco Biology Essay Questions 2023.
Section II [Theory]:
Answer any four questions from this section. Each question carries 10 marks.
Write your answers in the answer booklet.
1. (a) (i) State two main functions of roots.
(ii) Make a drawing 8-10cm long of the transverse section of the stem of a dicotyledonous plant and label fully.
(b) In a tabular form, state three differences between the functions of vascular tissues of plants and the skeleton of mammals.
(c) State: (i) two functions of xylem tissues;
(ii) one function of phloem tissues.
(d) What is meant by the term tropism?
2. (a) What is reproduction?
(b) In a tabular form, state six differences between sexual reproduction and
(c) asexual reproduction.
(d) State three advantages of sexual reproduction.
(e) (i) Describe the female reproductive structure of a flowering plant.
(ii) List two factors necessary for the germination of seeds.
3. (a) (i) What is pollution?
(ii) Name three water pollutants.
(iii) State five harmful effects of sulfur dioxide in the atmosphere.
(b) (i) Explain the term population.
(ii) Explain how a pitfall trap is used to measure the population size of organisms in a habitat.
4. (a) In a garden, it was observed that the leaves of some vegetables were molting and had turned yellow, purple, and orange. There was stunted growth of mostly the lower leaves and the vegetables possessed a weak stem. List the elements likely to be deficient in the garden soil.
(b) State three methods that can be adopted by a farmer to improve soil fertility for improved yield.
(c) State four similarities and four differences between the alimentary canal of a bird and a cockroach.
(d) List four disorders of the alimentary canal of humans.
5. (a) (i) Bacteria reproduce asexually by dividing in two. What term is used for this form of asexual reproduction?
(ii) What do bacteria form when environmental conditions become unfavourable?
(iii) What does the term pathogenic mean in relation to bacteria?
(b) (i) Name an organ in the human body, other than the kidney, in which excretion takes place.
(ii) In which part of the flower is pollen produced?
(iii) In which part of a flower does a seed form?
(c) Name another member of the kingdom to which Rhizopus belongs, other than yeast, and explain how it is of benefit to humans.
6. (a) (i) What is courtship behaviour?
(ii) Outline five benefits derived from the exhibition of courtship behaviour.
(b) Describe briefly courtship behavior in the Agama lizard.
(c) Describe briefly the mammalian placenta.
7. (a) Explain briefly the role of the skin as a sensory organ.
(b) Describe briefly the vegetation of Tropical Rain Forest.
(c) List five animals that inhabit the Tropical Rain Forest.
8.
Neco Biology Objective Questions.
Cellular Biology:
Understanding the basic unit of life is fundamental:
Cell Structure: Learn about cell organelles, their functions, and differences between plant and animal cells.
Cell Division: Understand mitosis and meiosis, their significance, and differences.
Genetics:
Explore the principles of inheritance and genetic variations:
3. Genes and Heredity: Comprehend Mendelian genetics, inheritance patterns, and genetic disorders.
DNA and RNA: Study DNA replication, transcription, translation, and the role of these molecules in heredity.
Ecology:
Understand the interaction of organisms with their environment:
5. Ecosystems: Explore ecological concepts such as food chains, trophic levels, and nutrient cycles.
Biodiversity: Study ecosystems, conservation, and factors influencing biodiversity.
Physiology:
Delve into the functioning of living organisms:
7. Human Physiology: Understand organ systems like the respiratory, circulatory, and digestive systems.
Plant Physiology: Learn about photosynthesis, transpiration, and plant nutrition.
Evolution:
Study the concept of the origin and development of species over time:
9. Darwin's Theory: Understand natural selection and the evidence supporting the theory of evolution.
Adaptations: Explore how organisms adapt to their environment and evolutionary trends.
Reproduction:
Understand the process of reproduction in various organisms:
11. Human Reproduction: Learn about the male and female reproductive systems, fertilization, and development.
Plant Reproduction: Study plant reproductive structures and mechanisms.
Microbiology:
Explore the world of microorganisms:
13. Bacteria and Viruses: Understand their structure, life cycles, and their roles in causing diseases.
Biotechnology:
Understand the application of biological processes for human purposes:
14. DNA Technology: Explore genetic engineering, DNA fingerprinting, and their applications.
Practical Biology:
Practice is key for success:
15. Laboratory Skills: Familiarize yourself with laboratory techniques, such as microscopy, titration, and experiment analysis.
Introduction
Purpose of Writing Neco Gce
Is Neco Gce Useful?
Conclusion:
Mastering these essential topics in Biology for the WAEC exam involves a combination of understanding concepts, regular practice, and effective study techniques. Prioritize these topics, create a study plan, use reliable study materials, and practice past questions.
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