WAEC SSCE - Biology - 2020 (Objective)

What happens when the ciliary muscles of the eye contract? The 

The part of the cetral nervous system that controls unconscious actions in humans is the 

Which of the following statements about chromosomes is correct?

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

The cell as the basic unit of life consists of 

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

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

The part labeled i is the 

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

The respiratory organ of a cockroach

The diagram is an illustration of an experimental set-up. Study it and answer the question;

The set-up directly measure 

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

Replication of DNA molecules is catalysed by an enzyme called 

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

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

The diagram above illustrates an ecological instrument. Study it and answer the question below;

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

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

The properties of endocrine system include the following except 

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

When the instrument is in use, it is usually 

The diagram below is an illustration of an experimental set-up. Study it and answer the question below;

The set-up can measure comparatively the rae of 

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

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

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

Food is stored in the part labeled 

Use the list of insects below to answer the question below;

I. Cotton stainer   II. Honeybee   III. Termite   IV. Weevil

Which of the insects destroys grains?

The position occupied by an organism in food chain is the

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

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

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 part of a flower. Study it and answer the question below.

The part labeled II is the 

The mutualism type of relationship is different from a parasitic relationship because in mutualism

Use the list of insects below to answer the question below;

I. Cotton stainer   II. Honeybee   III. Termite   IV. Weevil

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

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

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

The plant is a? 

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

What type of habitat is W?

Measurements of height and weight of students in a class show 

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

Which of the following diseases can be inherited?

Soil with the finest texture is?

The part of the mammalian kidney that stores urine is the 

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

Use the following Classes of Arthropoda to answer the question below

I. Crustacea II. Insecta III. Arachinda IV. Chilopoda

Which members of the classes live mainly in an aquatic habitat?

Conservation of natural resources does not 

The excretory product of some reptiles, birds and insects is

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

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

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

The process that gave rise to the F1 generation is 

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

The number of lions and antelops in habitat Y shows that the lion

Use the following Classes of Arthropoda to answer the question below

I. Crustacea II. Insecta III. Arachinda IV. Chilopoda

Which of the classes is characterised by the possession of two pairs of antennae?

An example of a trace elements is

Who proposed the theory of evolution by natural selection 

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

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

The function of the part labeled I is 

The first stable product of photosynthesis is