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IB Biology Topic C4.2 Transfer of Energy and Matter… | RevisionDojo

IB
C4.2 Transfer of energy and matter

IB Biology Topic C4.2: Transfer of Energy and Matter Questionbank

C1.1 Enzymes and metabolism

C1.2 Cell respiration

C1.3 Photosynthesis

C2.1 Chemical signalling (HL)

C2.2 Neural signalling

C3.1 Integration of body systems

C3.2 Defense against disease

C4.1 Populations and communities

C4.2 Transfer of energy and matter

Paper

Level

Question

SLPaper 1A

What is a defining feature of autotrophs?

They consume other organisms for food

They fix carbon using external energy sources

They obtain energy by consuming organic compounds but do not fix carbon

They fix carbon but use organic compounds as their energy source

Question

SLPaper 1A

Deep-sea communities can be based on chemoautotrophs that oxidize inorganic compounds to fix CO2. Which process enables this ecosystem to act as a carbon sink?

SLPaper 1A

What is the correct distinction between primary and secondary production?

SLPaper 1A

Why are energy pyramids always upright?

SLPaper 1A

Despite high rates of primary production in tropical forests, most food chains remain short, rarely extending beyond four trophic levels.

Which factor best limits the length of food chains?

IB Biology Topic C4.2 Transfer of Energy and Matter Questionbank

Practice IB Biology Topic C4.2 Transfer of Energy and Matter with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for C4.2 Transfer of Energy and Matter and mirrors Paper 1A, 1B, 2 style where relevant.

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Photosynthesis by algae living near hydrothermal vents

CO2 fixed using energy from oxidizing inorganic compounds

External input of organic carbon from photic-zone ecosystems

Respiration rates higher than carbon fixation rates

Primary occurs in decomposers, secondary in autotrophs

Primary is accumulation by autotrophs, secondary by heterotrophs

Primary involves respiration, secondary does not

Both only occur in aquatic ecosystems

More energy is stored at each higher trophic level

Only producers use energy

Energy is lost at each level through respiration and heat

Primary consumers are always more abundant than producers

Respiration and heat loss limit usable energy at each trophic level

Organisms avoid predation by hiding in dense foliage

Only a small fraction of biomass is transferred to the next trophic level

Decomposers remove available energy before it moves up