Unit5 Modes Of Life 3.5 / 5 based on 3 ratings ? GeologyBenthonicPelagicA2/A-levelOCR Created by: Gabby-ACreated on: 26-05-16 08:56 27348516 Across 1. Organism lives on the sediment substrate. (e.g. a bivalve oyster) (9) 4. Organism does not move around on the sediment substrate. Some are attached to the sea floor others lie on the sea floor. Most will filter feed. (e.g. a bivalve mussel) (7) 6. Organism moves around on the sea floor and is usually a scavenger or predator. (e.g. a regular echinoid) (7) Down 2. Organism lives in the water column typically in the surface layers (7) 3. Organism lives in the sediment, usually in a burrow. Many will filter feed. (e.g. a bivalve clam) (8) 5. Actively swims in the water column. Most are scavengers or predators. (e.g. an ammonite) (8) 7. Organism lives on or in the sediment substrate of the sea floor (9) 8. Floats in the water column to wherever the currents will take it. Usually a filter feeder. (e.g. a graptolite) (10)
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