2020 Biology WAEC (WASSCE) Objective Past Questions (Paper 1)

The cell as the basic unit of life consists of ________

Use the following Classes of Arthropoda to answer the question

I. Crustacean
II. Insect
III. Arachnida
IV. Chilopoda

Which members of the Classes live mainly in aquatic habitat?

Use the following Classes of Arthropoda to answer the question

I. Crustacean
II. Insect
III. Arachnida
IV. Chilopoda

Which of the Classes is characterized by the possession of two pairs of antennae?

The organism with spiral chloroplasts and nucleus suspended by cytoplasmic strands is __________

The network of double membrane that conveys materials through the cytoplasm is the __________

The diagram below is an illustration of the longitudinal section of a plant organ. Study it and answer the question.

Food is stored in the part labeled ___________

The diagram below is an illustration of the longitudinal section of a plant organ. Study it and answer the question.

The plant is a ___________

The diagram below is an illustration of the longitudinal section of a plant organ. Study it and answer the question.

The part labelled I is the _________

Which of the following materials is not a living semi-permeable membrane?

In an experiment, mould and yeast cells were transferred into an environment with low oxygen concentration. After a few days, the mould died while the yeast cells did not. Which of the following statements best explains the above observation?

Which of the following tissues does not provide support in flowering plants?

The diagram below is an illustration of an experimental setup. Study it and answer the question.

The set-up directly measures ___________

The diagram below is an illustration of an experimental setup. Study it and answer the question.

The set-up can measure comparatively the rate of __________

The respiratory organ of a cockroach is the _________

The excretory product of some reptiles, birds, and insects is ________

The part of the mammalian kidney that stores urine is the ________

The properties of the endocrine system include the following except ________

The part of the central nervous system that controls unconscious actions in human is the _________

What happens when the ciliary muscles of the eye contract?

The diagram below is an illustration of a part of a flower. Study it and answer the question.

The function of the part labelled I is _____________

The diagram below is an illustration of a part of a flower. Study it and answer the question.

The part labeled II is the __________

The reagent used in testing for carbon(IV) oxide is _______

Oxygen comes out of the stomata during photosynthesis through the process known as __________

The first stable product of photosynthesis is __________

An example of a trace element is __________

Which of the following statements about a mixture of a protein-digesting enzyme and starch solution would be correct? The protein-digesting enzyme ______

A mutualism type of relationship is different from a parasitic relationship because in mutualism, _________

The table below shows the number of some organisms in habitats W and Y. Study it and answer the question.

What type of habitat is W?

The table below shows the number of some organisms in habitats W and Y. Study it and answer the question.

Which of the following statements about habitat W is correct? The ______

The table below shows the number of some organisms in habitats W and Y. Study it and answer the question.

The numbers of Lion and Antelopes in habitat Y shows that the Lion ________

The diagram below is an illustration of an ecological instrument. Study it and answer the question.

A disadvantage of the abiotic factor measured by the instrument is that it ________

The diagram below is an illustration of an ecological instrument. Study it and answer the question.

When the instrument is in use, it is usually _________

Soil with the finest texture is _________

The position occupied by an organism in a food chain is the ______

The depletion of the ozone layer will result in the earth’s surface receiving more _______

Use the list of insects below to answer the question.

I. Cotton stainer
II. Honey bee
III. Termite
IV. Weevil

The insects whose activities are both beneficial and harmful to humans are ________

Use the list of insects below to answer the question.

I. Cotton stainer
II. Honey bee
III. Termite
IV. Weevil

Which of the insects destroys grains?

Conservation of natural resources does not ________

A company was prohibited from producing bags made from natural leopard skin. This is an attempt to conserve ___________

Which of the following substances is not a conservable natural resource?

A child that can receive blood donation from anybody belongs to the __________ blood group

Variation which exhibits a wide range from one extreme to the other is ____________

Measurements of height and weight of students in a class show ________

Which of the following statements about chromosomes is correct?

Which of the following diseases can be inherited?

The diagram below is an illustration of a cross between plants A and B of the same species. Study it and answer the question.

If the F₁ generation are plants with high yield and resistance, the genotype of the F₁ generation plants would be _____________

The diagram below is an illustration of a cross between plants A and B of the same species. Study it and answer the question.

The process that gave rise to the F₁ generation is _________

Replication of DNA molecules is catalyzed by an enzyme called ________

Who proposed the theory of evolution by natural selection?

Which of the following statements best explains the reason why termites swarm at night?