WAEC Biology Questions and Answers 2022/2023 Expo, Theory & OBJ

Free WAEC Biology questions and answers 2022/2023, WAEC biology expo 2022, WAEC biology runs for biology paper 1 and paper 2, biology theory, and OBJ papers 2022.

Do you need free WAEC Biology questions and answers 2022/2023 expo for Biology theory and OBJ papers? If yes, then here is something that will help you.

For you to make ‘A’, ‘B’, or at least ‘C’ in biology in WAEC 2022, you must work your way out to get the necessary expos that will help you pass the WAEC biology exam 2022.

This WAEC biology expo 2022 is presented in different formats for WAEC biology theory questions and answers 2022 and WAEC biology objective (OBJ) questions and answers 2022.

WAEC Biology Examination Date and Schedule for 2022

The 2022 WAEC biology exam is scheduled to hold as follows:

Biology Paper Type	Paper Time and Duration
Biology 2 (Essay)	08:30 hrs. – 10:10 hrs.
Biology 1 (Objective)	10:10 hrs.-11:00 hrs.

Biology Examination Paper Types 2022

WAEC Biology OBJ Paper 1:

The WAEC Biology paper one (OBJ) is the objective paper and it comes with 60 multi-choice OBJ questions. Candidates are to are answer these questions within 1 hour 30 minutes.

WAEC Biology Theory Paper 2: WAEC Biology paper two is the Biology essay paper which is made up of different theory questions that you have to answer in detail.

Candidates will be given 2 hours to answer the WAEC Biology theory paper 2 questions. Each candidate is to answer about 5 to 6 questions in this section.

Get also: WAEC Timetable for 2022 PDF

WAEC Biology Objective (OBJ) Questions and Answers 2022 Expo

The following are some practice WAEC biology objective (OBJ) questions and answers 2022 expo to test you, which may possibly come out in the 2022 WAEC biology exam.

1. Which of the following human body systems is also known as the cardiovascular system?

1. Circulatory system
2. Endocrine system
3. Lymphatic system
4. Muscular system

The correct answer is the Circulatory system (Option A)

2. Which of the following is a blood group?

1. OA
2. OB
3. AB
4. OO

The correct answer is the AB (Option C)

 

3. Which of these Genotypes may possibly give birth to SS?

1. AA + AS
2. AA + SS
3. AA + AC
4. AS + AC

The correct answer is AS + AC (option D)

4. Each cell in a human contains ____ pairs of chromosomes?

1. 46
2. 23
3. 22
4. 45

The correct answer is 23 (option B)

Get also: free WAEC Chemistry questions and answers here

5. Human immune system fights off infection mostly through the use of ___?

1. Microbes and Antigens
2. Exogenous and immunogenic
3. Endogenous and Microbes
4. Antibodies and macrophages
5. Autoantigens and intracellular

The correct answer is Antibodies and macrophages (option D)

6. Which of these is not true about the human cells?

1. There are more bacteria cells in our body than our own human cells?
2. Most bacteria cells are essential to human health
3. Bacteria cells help us to perform key bodily functions
4. There are more non-human cells in our body than human ones
5. All bacteria cells in the human body are harmless

The correct answer is Option E

7. Which of the following is a function of the Appendix in the Human body?

1. It houses beneficial gut flora that can repopulate the digestive system whenever there’s a wipeout of the normal populations of this flora
2. It helps in building antigens in the body that can be transported to the human immune system to fight off infection
3. It stores essential minerals that can be converted into useful nutrients for the body.
4. It helps to store waste products that can be passed to the urinary tract to send out in the form of urine.

The correct answer is option A

8. Which of these Genotypes can marry without giving birth to SS?

1. AA + SS
2. AS + SS
3. SS + SS
4. AC + SS

The correct answer is AA + SS (option A)

9. Inhibitors are used to______?

1. Disrupt enzyme activity
2. Lower rate of reaction
3. Regulate an enzyme activity
4. Increase the rate of reaction

The correct answer is to Disrupt enzyme activity (option A)

10. What are the excretory organs in insects?

1. Squamous
2. Stratum Corneum
3. Stratum Lucidum
4. Malpighian tubules

The correct answer is Malpighian tubules (option D)

WAEC Biology Theory (Essay) Questions and Answers 2022 Expo

The following are some samples and practice WAEC biology theory (essay) questions and answers to test your knowledge of biology.

1. Define metamorphosis.

Ans. Can be defined as the change of form or structure from an immature form to an adult form in two or more distinct stages.

2. State 5 harmful effects of parasites on their hosts

Ans. 5 harmful effects of parasites on their hosts are;

1. Parasites’ activities on their host can result in loss of weight in the host
2. Parasites can cause infections with bacteria in their host
3. Parasites can stimulate the production of toxic compounds that may alter the body function of their host
4. Parasites can cause harmful effects like immune suppression and make their host susceptible to other diseases
5. Parasites can cause allergic reactions in their host

3. State any 5 layers of the epidermis in the skin of humans

5, among the layers of the epidermis in the skin of humans, include;

1. The Basal Cell Layer
2. The Squamous Cell Layer
3. The Stratum Corneum
4. The Papillary Layer
5. The Reticular Layer

4. Explain why a Rhesus-negative woman who gets married to a Rhesus-positive man might possibly lose her second pregnancy.

Ans. A Rhesus-negative woman who gets married to a Rhesus-positive man might possibly lose her second pregnancy because a Rhesus-negative mother has no antigen on the surface of her Red Blood Cells/RBC while a Rhesus positive man has antigen on his RBC. So during her first pregnancy, the child carries a positive Rhesus factor at the pregnancy, the Rhesus factor enters the mother’s bloodstream and ruptures the placenta, and as a result of the rupture, blood seeps into the mother’s blood and causes it to develop anti-Rhesus antibodies which will then cause agglutination in a small proportion of foetal blood cells. So in the second pregnancy, the child might be Rhesus positive and a child carrying Rhesus positive will likely suffer massive destruction of red blood cells/erythroblastosis fetalis and that may result in a miscarriage of the child.

WAEC Biology Examination Expo 2022 Secrets

In this section, we are going to give you the WAEC expo for biology that the West African Examination Council has released to help candidates.

This expo is the corrections to the mistakes that candidates made during the biology exam and what you should do in your case.

The following are the WAEC expo tips on how to pass the WAEC biology exam 2022.

• Make sure you answer all questions precisely without giving ambiguous answers
• Make sure you supply your answers in the spaces provided
• Show proficiency in answering questions that require recall of facts
• Make sure you follow the examination instructions stated on the question paper
• Make good expression in answering questions that require explanation
• Learn how to and the rules in drawing and labeling of biology diagrams
• Make sure you give titles to all the diagrams you draw (very important)
• Learn how to spell technical terms in biology correctly

We believe this free WAEC Biology questions and answers 2022/2023, WAEC biology expo 2022, WAEC biology runs for biology paper 1 and paper 2, biology theory, and OBJ papers 2022 will be helpful to you.

Good luck in your exam!