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Biology Past Questions and Answers

Waec Biology Questions

Question 776:

Which of the following is used to measure the rate of water uptake in plants?

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A Potometer
B Hydrometer
C Hygrometer
D Aspirator

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Question 777:

Which of the following does not occur during inhalation in mammals?

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A Rib cage is raised up
B Diaphragm contracts and becomes dome shaped
C Inter-coastal muscle contracts
D Volume of the thoracic cavity increases.

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Question 778:

The oxygen released during photosynthesis is obtained

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A From the catalytic splitting of carbon-dioxide in plant tissues
B From the breakdown of glucose molecules in cells
C During the photolysis of water using energy trapped in chlorophyll
D By the excretion of excess oxygen in plant tissues

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Question 779:

In which of the following processes in mammals is liquid passed from blood capillaries to Bowman‘s capsule?

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A Filtration
B Diffusion
C Osmosis
D Reabsorption

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Question 780:

Adrenalin is considered as a hormone for â€œfright and flight” because it

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A Controls the fluid content of the body
B Is used in protein metabolism
C Plays a role in the pH balance of the body fluids
D Prepares the body for action.

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