Practice IB Biology Topic 2.2 Water with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for 2.2 Water and mirrors Paper 1A, 1B, 2 style where relevant.
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Outline how the properties of water make it an effective coolant for the body.
Describe how changes in weather conditions affect the transport and loss of water in plants.
Explain how water balance is restored in mammals when they are dehydrated.
Which of the following conditions is essential for the germination of seeds in most flowering plants?
Living organisms produce a wide variety of organic compounds.
Define the term organic.
State the three most commonly occurring elements.
Some organic compounds contain other elements. State one substance, or group of substances, that contains nitrogen.
Some organic compounds contain other elements. State one substance, or group of substances, that contains phosphorus.
What is a consequence of the specific heat capacity for liquid water, ice and water vapour?
| State | Specific heat capacity |
|---|---|
| liquid water | 4.187 |
| ice | 2.108 |
| water vapour | 1.996 |
What are the most frequently occurring elements in living organisms?