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Biology WAEC Questions and Answers 2022 Verified Expo

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2022 WAEC Biology Objective Answers:

BIOLOGY OBJ:
1-10: DCADABCADB
11-20: ABDBABDAAA
21-30: ACBABBCBCB
31-40: ABDDDBDACA
41-50: ACCADCDBBA

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WAEC Biology Answers 2022

 

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(1a)
A cell is the smallest unit that can live on its own and that makes up all living organisms and the tissues of the body. A cell has three main parts: the cell membrane, the nucleus, and the cytoplasm. The cell membrane surrounds the cell and controls the substances that go into and out of the cell.

(2b)
[TABULATE]

-HERBIVORE-
(i) They are animals that consume only plant and their products
(ii) They have very small mouth opening and consume food from their mouth
(iii) They have broad, flat and short, teeth to grind and chew plant leaves, grains, and seeds.

-CARNIVORE-
(i) They are animals that consume the flesh of other animals
(ii) They have large mouth opening and use their teeth for tearing the flesh apart
(iii) They posses long, sharp, and curved incisors and canines to tear flesh.

(2bii)
[TABULATE]

-HUMAN-
(i) Humans are homo sapiens
(ii) Humans are omnivores
(iii) Humans have a complex nervous system
(iv) Humans walk upright on two legs

-GOAT-
(i) Goats belong to the specie of capra hircus
(ii) Goats are herbivores
(iii) Goats have a small brian
(iv) Goats walk on four legs

(2c)
Milk teeth are sets of early, temporary teeth in children or young mammals which fall out as the permanent teeth emerge.

3ai) Ecological niche is a term for the position of a species within an ecosystem, describing both the range of conditions necessary for persistence of the species, and its ecological role in the ecosystem.

3aii)

– Food
– Shade
– Wind breaker
– Absorb Carbobdioxide
– Promote Photosynthesis for oxygen provision

(3bi)
[Pick any two] – Overview of the content of the environment
– To have different outcome
– To know the range of organisms in that area

(3bii)
– Simple random sampling
– Systematic Sampling
– Convenience Sampling
– Clustered Sampling

(3c)
– Whorl
– Compound
– Loop
– Arch

(3di)
Garden peg ( Potassium Satiuim)

(3dii)
[Pick any two] – Flower are bisexual
-They are self pollinating
– Short lifespan
– Some seed are round others are wrinkled

(4ai)
It states that the amount of the conserved quantity at a point or within a volume can only change by the amount of the quantity which flows in or out of the volume.

(4aii)
– Conservation of mass and energy
– Conservation of linear momentum, conservation of angular momentum
– Conservation of electric charge
(4bi)
– Lax and broken regulation systems

– Highly-priced and valued animal parts, products, and pets

(4bii)
– Elephants
– Rhinos
– Tigers
– Gorillas
– Sea turtles

(4c)
– Loss of biodiversity, migration of wildlife
– Exological imbalance
– Soil erosion
– Disruption in hydrological cycle of water catchment area

(4di)
A blood transfusion is a routine medical procedure in which donated blood is provided to you through a narrow tube placed within a vein in your arm. This potentially life-saving procedure can help replace blood lost due.

(4dii)
An antigen is any substance to which the immune system can respond. For example, components of the bacterial cell wall can trigger severe and immediate attacks by neutrophils.

A procedure in which whole blood or parts of blood are put into a patient’s bloodstream through a vein. The blood may be donated by another person or it may have been taken from the patient and stored until needed. Also called transfusion. A patient is given blood through an intravenous (IV) catheter in the arm. The blood may be donated by another person, or it may have been taken from the patient and stored until needed.

 

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WAEC Biology 2022

(5a)
TABULATE
=EARTHWORM=
(i) Straight
(ii) Simple
(iii) It feeds on fluid

=COCKROACH=
(i) Curve
(ii) More enveloped
(iii) It feeds on both fluid and solid

(5aii)
(i)Possession of crop
(ii)Possession of gizzard
(iii)Possession of pharynx

(5b)
(i) Water cycle
(ii) – Plant contribute through transpiration
– Animals contribute through respiration
– Animals contribute through perspiration
(iii)
– X: Condensation
– Y: Transpiration
– Z: Evaporation

(5c)
TABULATE

=ORGAN=
(i) Kidney
(ii) Skin

=DISEASES=
(i) Kidney stones, diuresis and oedema
(ii) Eczema, acne, vitiligo

(5di)
This is a process whereby heterotrophic organisms utilize the remains of one living tissue as a source of nutrition

(5dii)
(i) Fungi
(ii) Bacteria

(5diii)
Temperature

(5div)
Carbon cycle

(5e)
They exhibit heterotrophic nutrition known as carnivorous or insectivorous feeding. They have attractive colours that attracts insects to them. Once the insect lands in their spine, they are killed and digested

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EXAMINATION SCHEME FOR WAEC 2022 Biology

If you’re wondering what the 2022 Waec Biology question paper will look like, you can get the main gist/expo here as we reveal and explain everything without holding anything back.

The WAEC Biology QUESTIONS paper in 2022 will be divided into two sections: objective and theory. Here are some hints about the content of these TWO sections. Please keep in mind that all (two) sections must be completed on the SAME DAY and within a specific time frame. Join us as we dissect the two sections of the Biology question paper for the year 2022.

2022 WAEC Biology paper 1: keep in mind that you will have to answer at least 50 questions in the object (OBJ) section, each of which is worth one mark, for a total of 50 marks.

2022 WAEC Biology paper 2: this is the theory section, where you will be required to answer only 5 questions out of a total of 11.

Note that, unlike other subjects, Biology has practical application Which will be written on another date.

EXAMINATION INSTRUCTIONS FOR THE WAEC 2022 Biology EXAMINATION

  • If you aren’t told to, don’t open your booklet.
  • At the end of the exam, always write your name on the WAEC attendance sheet.
  • When shading your objectives questions, only use HB pencil.
  • Keep in mind that if you are caught with expo, your WAEC score may be withheld (it shall not be your portion amen)
  • Your names must be spelled correctly, and you must include the subject and exam number.
  • CRS does not requires calculations, so you do not need to bring your calculator.
  • Before submitting, go over what you’ve written so far to make sure it’s free of errors.

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