Marine Life Factors and Competition

This video explores biotic and abiotic factors affecting marine biodiversity, focusing on competition, predation, symbiosis, and diseases. It explains intra and interspecific competition, the competitive exclusion principle, and the impact of abiotic factors like temperature and salinity on species distribution. Examples include barnacles, sea stars, and coral reefs.

What page in the Cambridge Marine Science book covers the biotic and abiotic factors discussed in the video?

• Page 100

• Page 200

• Page 150

• Page 129

In the example of barnacles, what limits the distribution of the smaller barnacle species?

• Competition with larger barnacles

• Predation by sea stars

• High salinity

• Lack of sunlight

Why do blue mussels prefer to live lower in the intertidal zone?

• They need more sunlight

• They are less tolerant of drought

• They avoid predators like sea stars

• They require more oxygen

What is an example of a disease affecting marine populations mentioned in the video?

• Coral bleaching

• Stony coral tissue loss disease

• Red tide

• Fish fin rot

What type of competition occurs between individuals of the same species?

• Parasitic competition

• Symbiotic competition

• Inter-specific competition

• Intra-specific competition

According to the competitive exclusion principle, what happens when two species compete for the same resources?

• They both thrive equally

• One species will outcompete the other

• They form a mutualistic relationship

• They both become extinct

Which of the following is NOT an abiotic factor affecting marine life?

• Salinity

• Temperature

• Predation

• Turbidity

What do coral reefs require to thrive, according to the video?

• Low sunlight

• High turbidity

• Clean water

• Cold temperatures

Which factor is likely to limit the growth of phytoplankton?

• Predation

• Sunlight

• Wave action

• Salinity

What abiotic factor can limit the size of mussel populations on rocky coasts?

• Temperature

• Wave action

• Sunlight

• Oxygen levels