Get Free 2023 WAEC Biology (BIO) Essays (Theory) and Objectives (OBJ) Questions and Answer | Free WAEC May/June Biology Questions and Answers EXPO Room.
A FREE WAEC BIOLOGY ANSWER ROOM for May/June 2023 students [School candidates]
Complete 2023 WAEC BIOLOGY QUESTIONS AND ANSWERS (OBJ & ESSAY)
June 7, 2023, Wednesday
Biology 2 (Essay) – 09:30am – 11:10am
Biology 1 (Objective) – 11:10am – 12:00pm
ANSWERS TO WAEC BIOLOGY OBJECTIVES (OBJ) 2023:
BIOLOGY OBJ
Use This
01-10: CABADCCBCD
11-20: DBCDDBDBBC
21-30: ADABDAADCD
31-40: BBCBDCBBBB
41-50: ABCCBCACDA
COMPLETED
WAEC BIOLOGY ESSAY AND THEORY ANSWERS 202
NUMDER 1
(1a)
The classification of living things involves grouping organisms based on their characteristics. The current classification system consists of Domain, Kingdom, Phylum, Class, Order, Family, Genus, and Species.
(1bi)
-Fungi-
(i)Decomposition- Fungi decompose organic matter and recycle nutrients, contributing to soil health.
(ii)Medicine- Some fungi are used in medicine, such as Penicillium, which produces antibiotics.
(iii)Food- Edible mushrooms are a popular food item across the world. Certain fungi like yeast are used in baking and fermentation to produce wine and beer.
(iv)Industry- Fungi are used in industries like paper manufacturing and in the production of enzymes like citric acid and gluconic acid.
(1bii)
-Plants-
(i)Food- Plants are a major source of food for humans and animals.
(ii)Oxygen production- Through photosynthesis, green plants produce oxygen which is essential to all living organisms.
(iii)Raw materials- Fibers are obtained from plants and are used to make clothing, paper, and other products. Plants like timber and bamboo are used for construction purposes.
(iv) Medicine- Many plants contain compounds with medicinal properties that are used in traditional medicine and pharmaceutical industry.
(1c)
(i) Cnidaria; Hydra
(ii) Nematoda; Ascaris
(iii) Chordata; Dog, cat
(iv) Annelida ; Earthworm, leeches
(v) Mullusca; Snail, slugs, limpets
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NUMBER 2
(2a)
[FILL IN THE TABLE WITH THIS]
IRON:
Function:
(PICK ANY ONE)
-Chlorophyll formation
-Electron transport in photosynthesis
-Enzyme activation
-Nitrogen fixation
Effects of deficiency in plants:
(PICK ANY ONE)
-Chlorosis (yellowing of leaves)
-Stunted growth
-Reduced fruit and seed production
-Interference with nutrient uptake
MOLYBDENUM:
Function:
(PICK ANY ONE)
-Nitrogen fixation
-Enzymatic reactions
-Iron uptake and utilization
-Seed germination and growth
-Chlorophyll formation
Effects of deficiency in plants:
(PICK ANY ONE)
-Reduced nitrogen fixation
-Chlorosis (yellowing of leaves)
-Impaired sulfur metabolism
-Abnormal phosphorus uptake
-Altered enzyme activity
POTASSIUM
Function:
(PICK ANY ONE)
-Osmotic regulation
-Enzyme activation
-Protein synthesis
Effects of deficiency in plants:
(PICK ANY ONE)
-Stunted growth.
-Leaf chlorosis.
-Weak stems.
-Reduced flower and fruit production.
-Increased susceptibility to diseases and pests.
COPPER
Function:
(PICK ANY ONE)
-It plays a vital role in activating various enzymes within plants
-It helps to facilitate photosynthesis
-It helps facilitate respiration in plants
(PICK ANY ONE)
Effects of deficiency in plants:
-Stunted growth
-Yellowing of leaves
-Death of plant tissue
-Reduced fertility
-Increased susceptibility to diseases
NITROGEN
Function:
(PICK ANY ONE)
-It helps in building proteins
-It is a fundamental constituent of nucleic acids and DNA
-It helps in formation of chlorophyll
-It helps in energy transfer and metabolism
-It is an enzyme co-factor
Effects of deficiency in plants:
(PICK ANY ONE)
-Reduced photosynthesis
-Poor protein synthesis
-Leaf necrosis
-Increased susceptibility to diseases and pests.
-Impaired nutrient transport
(2b)
(PICK ANY THREE)
(i) Fruits and Vegetables
(ii) Grains and Cereals
(iii) Legumes and Pulses
(iv) Nuts and Seeds
(v) Dairy Products
(vi) Meat, Poultry, and Fish
(2ci)
BUCCAL CAVITY:
(PICK ANY TWO)
(i) The buccal cavity is the entry point for food and liquids into the digestive system.
(ii) The buccal cavity is responsible for chewing or masticating food.
(iii) The buccal cavity contains salivary glands that produce saliva.
(iv) The buccal cavity plays a vital role in speech production.
(2cii)
DUODENUM
(PICK ANY TWO)
(i) The duodenum receives partially digested food from the stomach and continues the process of digestion.
(ii) The duodenum is involved in the absorption of nutrients from digested food.
(iii) The duodenum plays a role in regulating the overall process of digestion.
(iv) The duodenum secretes several important hormones that regulate various aspects of digestion.
(2ciii)
STOMACH
(PICK ANY TWO)
(i) One of the primary roles of the stomach is to store food temporarily after it has been ingested.
(ii) The stomach aids in the mechanical digestion of food through muscular contractions known as peristalsis.
(iii) The stomach secretes gastric juices, primarily composed of (HCl) and enzymes such as pepsin, which play a crucial role in chemical digestion.
(iv) The stomach controls the rate at which food is released into the small intestine.
(2d)
Glucose and fructose
2023 WAEC BIOLOGY QUESTIONS
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WAEC BIOLOGY ESSAY/THEORY QUESTIONS AND ANSWERS for 2023/2024.
WAEC biology questions and answers for 2023 can be found in two sections (A & B). In A, there are usually 60 objectives and 6-7 essay questions while in B, there are always 6-7 essay questions.
Here are the WAEC biology questions and answers
1. A cell is a functional unit of living organisms due to
A. multicellular organisms are made up of cells
B. all cells in a multicellular organism function as a single cell
C. the function of a multicellular organism is the sum total of the functions of its constituent cells
D. the function of a single cell is superior to that of the multicellular organism
E. the cells of a multicellular organism are similar in structure
ANSWER: A ( multicellular organisms are made up of cells ).
2. The protozoa's organelle that drains water from its body is
1. The plasma membrane
contractile vacuole in B.
Cell wall, C.
Protoplasm of D.
E. cellular
A contractile vacuole, B.
3. Because of ____, Spirogyra is recognized as a multicellular plant.
A. Its cytoplasmic threads connect its cells together.
B. Organs are created by combining its cells.
C. End-to-end links connect the cylindrical cells.
D. Only one cell makes up the filaments.
E. is a type of algae with enormous vacuoles.
A (its cytoplasmic strands bind the cells together) is the correct answer.
Additional Biology Questions to Consider
4. ____ regulates the system of gaseous exchange in living things.
Osmosis, A.
B. breathing
Diffusion C.
D. breathing out
breathing E.
SELECTION: C (diffusion)
5. Regarding diffusion, which of the following statements is true?
A. It is limited to the motion of water molecules.
B. Molecules migrate from a higher concentration area to a lower concentration area.
C. Diffusion requires the presence of a membrane with varying permeability.
D. It involves the Bowman's capsule when a solute can no longer dissolve in a solvent made up entirely of solute molecules.
E. When a solute can no longer dissolve in a solvent, it happens.
SUMMARY: E (A solute can no longer dissolve in a solvent.)
2023–2024 WAEC Biology Theory Paper 1 Questions and Answers
This format is used for the questions every time.
1. (a) Give a brief explanation of the function of the stomach in digesting.
(b) Identify three plant components that can store food.
(c) Provide a succinct explanation of how the blood sugar levels of mammals can be controlled.
What is sexual reproduction? 2.
(ii) List the four mammals' sex-producing organs.
(iii) List the sex hormones that are secreted by each of the organs mentioned in 2(a)(i).
(a) List three variations in lizard and bird reproduction in tabular form.
How do identical twins develop in people (c) (i)?
List three characteristics of identical twins in (ii).
3. (a) Describe these terms:
disease (i);
2. Symptoms
How to Pass the WAEC Biology Exam in 2023 and 2024?
1. Specify a goal and work to fulfill it.
2. Now that you've decided to attend the WAEC Biology course, you need to set goals.
3. Create a calendar and overarching plan for accomplishing your goals.
4. Purchase the advised biology textbook for the 2022 WAEC exam.
Generally speaking, WAEC suggests reading for the test. To prepare for the WAEC biology 2023 exam, you are allowed to use any top-notch Biology textbook, with the exception of WAEC Literature for English, where some novels are required and others are not.
Nevertheless, some textbooks are more difficult to understand than others.
Get the appropriate textbook to simplify the subject if you are studying something you find difficult to understand.