WAEC 2024 Biology | Objective

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Practice these randomly selected questions to test your readiness.

Question 1 View Details
Which of the following organisms contains chlorophyll in its cells?
A. Caterpillar
B. Paramecium
Correct C. Euglena
D. Grasshopper

Correct Answer: C

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Question 2 View Details
Species are groups of organisms that
A. are of different origins and are always found together.
B. are of common origin but cannot interbreed freely.
Correct C. have similar features and can interbreed freely.
D. resemble each other and occupy different niches.

Correct Answer: C

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Question 3 View Details
A plant with short, vertical underground stem is a
A. bulb.
Correct B. corm.
C. rhizome.
D. tuber.

Correct Answer: B

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Question 4 View Details
DIAGRAM - D1
The diagram is an illustration of a reproductive process in an organism. Study it and answer questions 4 and 5.
The type of reproduction illustrated is
A. budding.
Correct B. binary fission.
C. grafting.
D. vegetative propagation.

Correct Answer: B

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Question 5 View Details
The diagram is an illustration of a reproductive process in an organism. Study it and answer questions 4 and 5.
The illustrated organism is capable of reproducing by
A. sexual means only.
B. asexual means only.
C. vegetative propagation only.
Correct D. sexual and asexual means.

Correct Answer: D

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Question 6 View Details
Which of the following organisms consists of unicellular cells joined to form a filament?
A. Amoeba
Correct B. Spirogyra
C. Euglena
D. Clamydomonas

Correct Answer: B

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Question 7 View Details
The structure in the cell that controls the movement of substances in and out of the cell is the
Correct A. cytoplasmic membrane.
B. nuclear membrane.
C. protoplasm:
D. endoplasm.

Correct Answer: A

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Question 8 View Details
The bursting of a red blood cell placed in a hypotonic solution is called
A. crenation.
Correct B. haemolysis.
C. plasmolysis.
D. cytolysis.

Correct Answer: B

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Question 9 View Details
The function of the root hair in plants is to
Correct A. absorb soil water by the process of osmosis.
B. excrete water and mineral salts by simple diffusion.
C. purify the soil for the plant.
D. translocate manufactured food.

Correct Answer: A

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Question 10 View Details
If a germinating seed is attached horizontally to a revolving klinostat, what would be the effect on the seedling after three days? The
A. plumule will curve vertically upward while the radicle will not show any curvature.
B. radicle will curve towards the ground while the plumule will not show any curvature.
Correct C. plumule and radicle will not show any curvature.
D. plumule will curve vertically upwards while the radicle will curve towards the ground.

Correct Answer: C

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Question 11 View Details
The lumbar vertebra differs from the thoracic vertebra because it possesses a
A. longer neural spine.
B. wider neural canal.
Correct C. thicker centrum.
D. shorter transverse process.

Correct Answer: C

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Question 12 View Details
Which of the following blood vessels carries oxygenated blood into the heart?
A. Pulmonary artery
B. Anterior vena cava
Correct C. Pulmonary vein
D. Posterior vena cava

Correct Answer: C

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Question 13 View Details
Filtrates in the Bowman's capsule contain vitamins because
Correct A. they have low molecular weight.
B. most of them are fat soluble.
C. they cannot be reabsorbed into the blood.
D. little amount is required by the blood.

Correct Answer: A

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Question 14 View Details
The structures that contain grey matter and white matter are found in the
A. reproductive system.
Correct B. nervous system.
C. respiratory system.
D. digestive system.

Correct Answer: B

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Question 15 View Details
DIAGRAM - D1
The diagram is an illustration of sense organ in humans. Study it and answer questions 15 and 16.
The part that protects the organ is labelled
Correct A. I.
B. II.
C. III.
D. IV.

Correct Answer: A

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Question 16 View Details
The diagram is an illustration of sense organ in humans. Study it and answer questions 15 and 16.
The part labelled III is the
A. iris.
B. pupil.
Correct C. sclera.
D. cornea.

Correct Answer: C

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Question 17 View Details
DIAGRAM - D1
The diagram is an illustration of two plants P and Q. Arrows I, II and III illustrate the transfer of pollen grains among flowers of plants P and Q. Study it and answer questions 17 and 18.
The types of pollination illustrated as I, II and III, respectively are
A. cross, self and cross.
Correct B. self, self and cross.
C. self, cross and self
D. self, cross and cross.

Correct Answer: B

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Question 18 View Details
The diagram is an illustration of two plants P and Q. Arrows I, II and III illustrate the transfer of pollen grains among flowers of plants P and Q. Study it and answer questions 17 and 18.
The condition necessary for reproduction to occur between plants P and Q after pollination is that plants P and Q should be
Correct A. of the same species.
B. brightly coloured.
C. well scented.
D. of different species.

Correct Answer: A

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Question 19 View Details
DIAGRAM - D1
The diagram illustrates a dry dehiscent fruit. Use it to answer questions 19 and 20.
The agent of dispersal of the fruit is
A. animal.
B. explosive mechanism.
C. water.
Correct D. wind.

Correct Answer: D

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Question 20 View Details
The diagram illustrates a dry dehiscent fruit. Use it to answer questions 19 and 20.
The Parachute-like tuft of hairs developed from the
A. pedicel.
B. petals.
C. receptacle.
Correct D. sepals.

Correct Answer: D

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Question 21 View Details
Which of the following events does not occur in the light reaction stage of photosynthesis?
A. Chlorophyll absorbs sunlight
Correct B. Carbon (IV) oxide combines with hydrogen
C. Photolysis of water occurs
D. Hydroxyl ions are produced

Correct Answer: B

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Question 22 View Details
The rate of photosynthesis decreases in a wilted herbaceous plant because the
A. enzymes in the leaf were denatured.
B. chlorophyll in the leaves was not broken down.
C. amount of light reaching the plant was reduced.
Correct D. amount of carbon dioxide entering the leaf decrease.

Correct Answer: D

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Question 23 View Details
The element required for chlorophyll formation in plants is
Correct A. Iron.
B. calcium.
C. phosphorus.
D. sulphur.

Correct Answer: A

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Question 24 View Details
The process of food digestion in mammals would
A. make energy immediately available to the body.
B. promote growth and repair of tissues.
C. provide sufficient food materials within the body.
Correct D. render food substances soluble and absorbable.

Correct Answer: D

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Question 25 View Details
Which of the following food substances would give a negative reaction with Benedict's reagent?
A. Fructose
B. Glucose
C. Galactose
Correct D. Sucrose

Correct Answer: D

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