Marine Science Sem 1 Review

Front

What is cohesion in the context of water?

Back

Cohesion is the property of water that allows water molecules to stick to each other, resulting in surface tension.

Front

What percentage of the Earth's surface is covered by seawater?

Back

71% of the Earth's surface is covered by seawater.

Front

What are phytoplankton?

Back

Phytoplankton are the largest and most important group of marine organisms that photosynthesize, serving as a primary food source in marine ecosystems.

Front

What type of relationship is exemplified by a cleaner fish removing parasites from another fish?

Back

This is an example of mutualism, where both species benefit from the interaction.

Front

What happens to energy transfer with each change in trophic level?

Back

With each change in the trophic level, there is a 10% transfer of energy and biomass.

Front

Define adhesion in the context of water.

Back

Adhesion is the property of water that allows water molecules to stick to other substances, which is important for processes like capillary action.

Front

What is the role of algae in marine ecosystems?

Back

Algae are important primary producers in marine ecosystems, contributing to oxygen production and serving as a food source for various marine organisms.

Front

Explain the concept of trophic levels.

Back

Trophic levels represent the hierarchical levels in an ecosystem, where each level consists of organisms that share the same function in the food chain.

Front

What is the significance of the 10% rule in ecology?

Back

The 10% rule states that only about 10% of the energy from one trophic level is transferred to the next, limiting the number of trophic levels in an ecosystem.

Front

What is the difference between commensalism and parasitism?

Back

In commensalism, one organism benefits while the other is neither helped nor harmed; in parasitism, one organism benefits at the expense of the other.