IB Biology Topic 4

What type of succession is shown going from figure A to figure B?

• primary succession

• eutrophication

• secondary succession

• intermediate

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A system made up of organisms interacting with one another

• biology

• society

• ecosystem

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How does energy enter an ecosystem?

• sunlight

• soil

• animals

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Why are food chains, such as the one shown, limited to 4-5 organisms?

• There are not more organisms in the ecosystem

• Organisms must share resources

• Energy transfers are inefficient

• They are only limited when organisms are living on land.

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The branch of biology that deals with the normal functions of living organisms and their parts. is...

• anatomy

• physiology

• Both anatomy and physiology

The study of how living things function or work.

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Which organism do the owl and the weasel compete for in the food web?

• Hawk

• Spider

• Grasshopper

• Shrew

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Which of the following processes removes carbon from the atmosphere?

• Plant Respiration

• Auto and factory emissions

• Photosynthesis

• Animal Respiration

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The arrows in a food chain or web represents what?

• They point to the organism that is being eaten.

• It shows how sunlight flows within an ecosystem.

• They show what direction the energy is flowing between organisms. 

• They represent how water is transferred within a habitat.

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The most important abiotic factors when studying biomes are...

• Food and Water

• Rain and Sunlight

• Temperature and Oxygen

• Precipitation and Temperature 

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