©Jason MacConnell 2025 ALL RIGHTS RESERVED.
OCEANS 101 FINAL Exam Questions With
Correct Answers A+
What influences life in the intertidal? - Answer✔Upper limit is usually determined by physical
factors.
Lower limit is usually determined by biological factors.
Physical influences in the intertidal: - Answer✔Tides (exposure time)
Temp
Wave action
Salinity
Oxygen stress
Biological influences in the intertidal: - Answer✔Recruitment/settlement
Competition (for food or space)
Predation
Adaptations to minimize heat gain - Answer✔Be big
Encase yourself
Change color or morphology
Evaporative cooling
Define desiccation - Answer✔Water loss
Adaptations to minimize desiccation - Answer✔Move
Live in dense groups or with seaweed canopy
Home scar
Close shell completely
Define home scar - Answer✔A hole carved into a rock in which an organism lives in
, ©Jason MacConnell 2025 ALL RIGHTS RESERVED.
Wave action determines what in intertidal: - Answer✔Salinity
Temp
Oxygen
What does degree of wave action determine? - Answer✔Which species can survive in intertidal
zone
Species that live in high wave action high intertidal: - Answer✔Small senile species
Species that live in high wave action low intertidal: - Answer✔Flexible species
Sessile - Answer✔Fixed in one place
Adaptations to wave action: - Answer✔Stay small
Be smooth
Be sessile
Be flexible
Regrow
Find shelter
Recruitment - Answer✔Juvenile organisms survive to be added to a population
Settlement - Answer✔Birth and or immigration
Competitive dominants - Answer✔Species that win the competition for limiting resources
Autotroph - Answer✔Makes own food
Phototrophs - Answer✔Use energy from sea to make food
Heterotrophs - Answer✔Eats to get energy
Mixotrophs - Answer✔Makes own food and eats shii
Semibalanus balonoids - Answer✔Large barnacle found in lower tidal
Chthamalus stellatus - Answer✔Small barnacle generally found in higher intertidal
Predation - Answer✔Predators remove species
Keystone species - Answer✔Species that is disproportionally important in maintaining
community diversity (example: Barnacles and star fish)
Plants vs Algae - Answer✔Plants: seagrasses (eelgrass)
OCEANS 101 FINAL Exam Questions With
Correct Answers A+
What influences life in the intertidal? - Answer✔Upper limit is usually determined by physical
factors.
Lower limit is usually determined by biological factors.
Physical influences in the intertidal: - Answer✔Tides (exposure time)
Temp
Wave action
Salinity
Oxygen stress
Biological influences in the intertidal: - Answer✔Recruitment/settlement
Competition (for food or space)
Predation
Adaptations to minimize heat gain - Answer✔Be big
Encase yourself
Change color or morphology
Evaporative cooling
Define desiccation - Answer✔Water loss
Adaptations to minimize desiccation - Answer✔Move
Live in dense groups or with seaweed canopy
Home scar
Close shell completely
Define home scar - Answer✔A hole carved into a rock in which an organism lives in
, ©Jason MacConnell 2025 ALL RIGHTS RESERVED.
Wave action determines what in intertidal: - Answer✔Salinity
Temp
Oxygen
What does degree of wave action determine? - Answer✔Which species can survive in intertidal
zone
Species that live in high wave action high intertidal: - Answer✔Small senile species
Species that live in high wave action low intertidal: - Answer✔Flexible species
Sessile - Answer✔Fixed in one place
Adaptations to wave action: - Answer✔Stay small
Be smooth
Be sessile
Be flexible
Regrow
Find shelter
Recruitment - Answer✔Juvenile organisms survive to be added to a population
Settlement - Answer✔Birth and or immigration
Competitive dominants - Answer✔Species that win the competition for limiting resources
Autotroph - Answer✔Makes own food
Phototrophs - Answer✔Use energy from sea to make food
Heterotrophs - Answer✔Eats to get energy
Mixotrophs - Answer✔Makes own food and eats shii
Semibalanus balonoids - Answer✔Large barnacle found in lower tidal
Chthamalus stellatus - Answer✔Small barnacle generally found in higher intertidal
Predation - Answer✔Predators remove species
Keystone species - Answer✔Species that is disproportionally important in maintaining
community diversity (example: Barnacles and star fish)
Plants vs Algae - Answer✔Plants: seagrasses (eelgrass)
