2009 WAEC Biology past questions and answers

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1
A group of closely related organisms capable of interbreeding to produce fertile offspring are known as members of a

A kingdom

B class

C family

D species



Correct Option: D


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2
Viruses are economically important because they

A do not have cell structures

B can only reproduce inside living cells.

C cause diseases in plants and animals

D exist as crystals outside living cells



Correct Option: C


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3
A beaker of pond water containing few specimens of Euglena was placed in a dark room for two weeks. At the end of this period, the specimens of Euglena were still alive because they were

A able to carry out holozoic nutrition.

B able to carry out photosynthesis using carbon dioxide in the pond water

C better adapted to life in darkness than to life in light

D not overcrowded



Correct Option: A


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4
The cytoplasm of the cell is considered a very important component because it

A regulates the amount of energy in the cell

B suspends all cell organelles.

C is the outermost part of the cell

D is solely responsible for cell division



Correct Option: B


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5
After an hour, the level of water in the thistle funnel will

A rise

B fall

C remain the same

D double



Correct Option: A


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6
The experiment above is used to demonstrate the process of

A transpiration

B water culture

C diffusion

D osmosis



Correct Option: D


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7
In plant cells the role of the membrane is played by the

A nucleolus

B cell wall

C cytoplasm

D mitochondrion



Correct Option: B


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8
Red blood cells were found to have burst open after being placed in distilled water for an hour. This phenomenon is known as

A plasmolysis

B diffusion

C haemolysis

D wilting



Correct Option: C


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9
The curvature movement of plants in response to the stimulus of water is called

A hydrotropism

B geotropism

C phototropism

D thigmotropism



Correct Option: A


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10
Two organelles directly involved in mitotic cell division are

A nucleus and mitochondrion

B ribosome and nucleus.

C centriole and Golgi apparatus

D nucleus and centriole



Correct Option: D


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