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WAEC Biology 2024 Questions And Answers expo

WAEC GCE Biology 2024 Questions And Answers Expo

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The West African Examination Council (WAEC) Has Scheduled The WAEC GCE Biology 2024 Questions And Answers Paper To Take Place on 27th November, 2024. This important exam will assess candidates understanding of Biology concepts and techniques.

As the exam date approaches, many candidates are actively searching for information such as:

  • WAEC GCE Biology 2024 Questions And Answers
  • WAEC GCE Biology Expo 2024
  • WAEC GCE Biology Practical 2024
  • WAEC GCE Biology Questions 2024
  • WAEC GCE Biology Answer 2024

If you are one of those candidates, this post will guide you on how to prepare effectively, get reliable resources, and succeed in the WAEC GCE Biology Essay And Objective + Practical 2024 Exam.

Get WAEC GCE Biology 2024 Questions And Answers

Here on Zamgist, we haveve provided solutions to help you pass the WAEC GCE Biology 2024. With our reliable answers/solutions, you can prepare confidently and secure high grades like B2, B3, C’s.

WAEC GCE Biology Practical Answer 2024

(2ai)
A: Monocotyledonae
B: Dicotyledonae

(2aii)
A: Stem
B: Root

(2aiii)
I: Epidermis
II: Cortex
III: Endodermis
IV: Pericycle
V: Xylem
VI: Phloem
VII: Pith
VIII: Epidermis
IX: Cortex
X: Central vascular bundle

(2b)
(i) Protection: V
(ii) Transport of food: II
(iii) Transport of water and mineral salts: III
(iv) Absorbing of water from soil: VIII
(v) Support: VII

(2c)
IV: Large surface area, thin walls for efficient absorption.
VIII: Root hairs increase surface area, thin cell walls for water absorption.

(2d)
(i)A has a circular arrangement of vascular bundles, while B has a scattered arrangement.
(ii)A shows distinct vascular bundles, B does not.
(iii)A has a defined outer layer (epidermis), B shows a less defined boundary.
(iv)A is a typical dicot stem cross-section, B resembles a monocot root cross-section.

(2e)
(i) Transport of food: Translocation
(ii) Transport of water and mineral salts: Transpiration
(iii) Absorption of water from soil: Osmosis

WAEC GCE BIOLOGY ESSAY ANSWERS 2024

BIOLOGY
01-10: ADCDCCBDCD
11-20: CCCBCDDABA
21-30: BADADBDDAC
31-40: ABCCCBCCCA
41-50: DCOMPLETED

PRACTICAL NOW AVAILABLE

COMPLETED

(4ai)
Organic evolution refers to the process by which species of living organisms change over time through variations in traits, inheritance, and natural selection. It is the gradual development of new species from common ancestors through genetic changes and adaptation to their environment.

(4aii)
(i) Fossil Record
(ii) Comparative Anatomy
(iii) Embryology
(iv) Molecular Biology
(v) Biogeography

(4bi)
The Theory of Use and Disuse suggests that body parts or organs that are used frequently become stronger and more developed, while those that are not used may diminish or disappear over generations. The idea is that environmental demands lead to the development or reduction of certain features based on their utility

(4bii)
Jean-Baptiste Lamarck.

(4biii)
(i) Giraffes
(ii) Aquatic organisms (like amphibians and their legs)

(4c)
Mutation refers to a sudden, random change in the genetic material (DNA) of an organism. Mutations introduce new genetic variations in a population. Some mutations are beneficial, giving organisms a survival advantage and thus increasing the likelihood of passing on these traits to future generations. Over time, these beneficial mutations accumulate and contribute to the evolution of new species

(4d)
(i) Aestivation: Lizard
(ii) Basking: Bat
(iii) Territoriality: Monkey
(iv) Hibernation: Polar bear

NUMBER THREE

(3ai)
Ecology is the study of the relationships between living organisms and their environment. It examines how living things interact with each other and with the non-living components of their environment, such as air, water, and soil.

(3aii)
An ecosystem is a community of living organisms (plants, animals, and microorganisms) interacting with each other and with their physical environment. The components of an ecosystem are interdependent and form a complex web of relationships.

(3aiii)
The biosphere is the part of the Earth’s environment that supports life. It includes all the living organisms on the planet, as well as the physical environment they inhabit, such as the atmosphere, hydrosphere, and lithosphere.

(3bi)
(PICK ANY TWO)
(i) Producers
(ii) Consumers
(iii) Decomposers
(iv) Abiotic factors

(3bii)
(PICK ANY TWO)
(i) Producers: Organisms that can synthesize their own food, usually through photosynthesis, and form the base of the food chain.
(ii) Consumers: Organisms that obtain energy by consuming other organisms, either directly (herbivores) or indirectly (carnivores and omnivores).
(iii) Decomposers: Organisms that break down dead organic matter, releasing nutrients back into the environment for reuse by producers.
(iv) Abiotic factors: The physical and chemical components of the environment, such as water, air, soil, and sunlight, which provide the necessary resources and conditions for life.

(3ci)
(PICK ANY FOUR)
(i) High species diversity
(ii) Lush vegetation and dense canopy
(iii) Warm and humid climate year-round
(iv) High rainfall (typically over 2,000 mm per year)
(v) Nutrient-poor soil
(vi) Vertical stratification of the vegetation

(3cii)
(PICK ANY TWO)
(i) Tall, straight trunks to reach the canopy and compete for sunlight
(ii) Broad, flat leaves to maximize light absorption for photosynthesis
(iii) Buttress roots to provide stability in the shallow, nutrient-poor soil
(iv) Ability to shed leaves during the dry season to conserve water
(v) Bark that is resistant to fire and pests
(vi) Seed dispersal mechanisms

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WAEC GCE Biology 2024 Paper is Categorized in to 3 parts:

  • WAEC GCE Biology Essay 2024
  • WAEC GCE Biology Objective 2024
  • WAEC GCE Biology Practical 2024

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WAEC GCE Biology 2024 Questions And Answers Expo

 

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WAEC GCE Biology Expo 2024

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Area of concentration for biology waec GCE 2024

  1. Concept of Living
  2. Forms in which living cells exist
  3. Cell structure and functions of cell components
  4. The Cell and its environment:
  5. Physical and Biophysical processes
  6. Properties and functions of the living cell
  7. Tissues and supporting systems
  8. Hormonal Coordination
  9. Nervous Coordination
  10. Sense Organs: Eye and Ear
  11. Reproductive systems in mammals, insects, and flowering plants
  12. Classification
  13. Organization of life
  14. Transport System
  15. Respiratory System
  16. Excretory Systems and Mechanisms
  17. Regulation of Internal Environment (Homeostasis)
  18. Basic Ecological Conceptsic Ecological concepts
  19. Simple Measurement of Ecological Factors
  20. Food webs and trophic levels
  21. Ecological Management.
  22. Adaptation For Survival And Evolution
  23. Behavioral adaptations in social animals
  24. Evolution: evidence and theories
  25. Biology Of Heredity (Genetics)
  26. Genetic terminologies
  27. Transmission and expression of characteristics
  28. Chromosomes and heredity
  29. Probability in genetics
  30. Linkage, sex determination, and sex-linked characters
  31. Application of genetics in agriculture and medicine
  32. Plant And Animal Nutrition
  33. Plant Nutrition
  34. Animal Nutrition
  35. Adaptation For Survival And Evolution
  36. Behavioral adaptations in social animals
  37. Evolution: evidence and theories
  38. Conservation Of Natural Resources
  39. Soil, water, wildlife, forest, and minerals conservation
  40. Variation In Population
  41. Morphological variations
  42. Physiological variations.

WAEC Biology 2024 Past Questions And Answers

(1ai)
Glomerulus:
(PICK ANY ONE)
(i) It filters blood to form glomerular filtrate.
(ii) It removes waste products and excess substances from the bloodstream.
(iii) It initiates the urine formation process by allowing water and small molecules to pass through while retaining larger molecules like proteins.

(1aii)
Bowman’s capsule:
(PICK ANY ONE)
(i) It collects the filtrate produced by the glomerulus.
(ii) It forms primary urine by capturing the filtrate and directing it into the nephron.
(iii) It serves as a funnel, guiding the filtrate into the proximal convoluted tubule for further processing.

(1aiii)
Proximal convoluted tubule:
(PICK ANY ONE)
(i) It reabsorbs water, ions, and nutrients from the filtrate back into the bloodstream.
(ii) It plays a crucial role in secreting waste products such as hydrogen ions and ammonia into the tubular fluid.
(iii) It maintains pH balance by selectively reabsorbing bicarbonate ions and secreting hydrogen ions.

(1aiv)
Distal convoluted tubule:
(PICK ANY ONE)
(i) It reabsorbs sodium and water, thus playing a key role in regulating blood pressure and fluid balance.
(ii) It secretes potassium and hydrogen ions, which helps in maintaining electrolyte and acid-base balance.
(iii) It also regulates calcium and phosphate levels in the blood, contributing to bone health and metabolic functions.

(1b)
|ORGANISM | Structure.. |..Form in which|

|Paramecium|Contractile vacuole|Liquid (water)

|Flatworm |Flame cells| Ammonia|

|Earthworm|Nephridia | Urea|

|Cockroach|Malpighian tubules|Uric acid|

|Human | Kidneys| Liquid(urine)|

|Plant | Stomatal pore| Gaseous (water vapor, oxygen, carbon dioxide

(1c)
(PICK ANY FIVE)
(i) Oxygen
(ii) Carbon dioxide
(iii) Water vapor
(iv) Resins
(v) gums
(vi) Latex
(vii) Tannins
(viii) Essential oils

(2ai)
-Mouth-
(PICK ANY ONE)
(i) Chewing and breaking down the food
(ii) Producing saliva to moisten and lubricate the food
(iii) Initiating the digestive process through enzymatic action

(2aii)
-Skin-
(PICK ANY ONE)
(i) Regulating body temperature through sweating
(ii) Excreting waste products like urea and lactic acid
(iii) Absorbing certain substances through the skin

(2aiii)
-Tongue-
(PICK ANY ONE)
(i) Helping with chewing and mixing the food with saliva
(ii) Providing taste sensation and identifying the taste of the food
(iii) Assisting in the swallowing process

(2aiv)
-Kidney-
(PICK ANY ONE)
(i) Filtering the blood and removing waste products
(ii) Regulating the balance of water, salts, and minerals in the body
(iii) Producing urine for excretion

(2av)
-Stomach-
(PICK ANY ONE)
(i) Storing and breaking down the food through mechanical and chemical processes
(ii) Producing gastric acid and enzymes to aid in digestion
(iii) Mixing the food with digestive juices

(2avi)
-Small Intestine-
(PICK ANY ONE)
(i) Absorbing the majority of nutrients from the digested food
(ii) Producing enzymes to further break down the food
(iii) Transporting the digested nutrients to the bloodstream

(2avii)
-Large Intestine-
(PICK ANY ONE)
(i) Absorbing water from the remaining undigested food
(ii) Storing and compacting the waste material
(iii) Eliminating the waste products from the body

(2aviii)
-Liver-
(PICK ANY ONE)
(i) Producing bile to aid in the digestion and absorption of fats
(ii) Metabolizing and detoxifying substances in the body
(iii) Regulating blood sugar levels and storing excess energy

(2b)
(PICK ANY THREE)
(i) Mouth (saliva)
(ii) Stomach (gastric enzymes)
(iii) Small Intestine (pancreatic and intestinal enzymes)
(iv) Liver (bile)

(2c)
(PICK ANY THREE)
(i) Amylase (breaks down carbohydrates)
(ii) Lipase (breaks down fats)
(iii) Protease (breaks down proteins)
(iv) Cellulase (breaks down cellulose in cassava)

(2d)
(PICK ANY TWO)
(i) Glucose
(ii) Fatty acids and glycerol
(iii) Amino acids
(iv) Minerals and vitamins

(2ei)
(PICK ANY ONE)
(i) Increased blood pressure
(ii) Retention of water in the body, leading to edema

(2eii)
(PICK ANY THREE)
(i) Provides a good source of carbohydrates from the cassava
(ii) Provides protein from the groundnut soup
(iii) Supplies essential minerals and vitamins
(iv) Helps to maintain body temperature through sweating
(v) Satisfies hunger and provides energy

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