Distribution of Life

1.  The chemistry of aquatic ecosystems is determined by

• amount of salts, nutrients, and oxygen dissolved in the water.
• number of other organisms present in the water.
• amount of rainfall the water receives.
• a.       biotic and abiotic factors in the water.

Tags

NGSS.MS-LS2-3

Aquatic ecosystems are classified by all of the following EXCEPT

• Depth and flow of water
• Organisms that live there
• Temperature of the water
• Chemistry of the water

One of the major differences between freshwater and marine ecosystems is

• Salinity
• Temperature
• Depth
• Food

If a small fish consumes phytoplankton, and a whale shark eats the small fish, about how much energy from the phytplankton is stored in the small fish for the whale shark to use?  

• 1%
• 10%
• 50%
• 90%

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

A team of marine biologists observed feeding patterns of several populations in the ocean. The energy pyramid shown depicts the feeding patterns the marine biologists observed

•  There is less energy available in the producers because their tissues are less dense than those at higher trophic levels. 
• There is more energy available in the second trophic level because less energy is needed for hunting compared to the higher trophic levels.
•  There is more available energy in the birds of prey because they have greater muscle mass for storing energy than organisms in lower trophic levels have. 
• There is less available energy in the fourth trophic level because of the loss of energy through metabolism in each of the lower trophic levels

Tags

NGSS.MS-LS2-3

The diagram shows the cycling of nutrients in an ecosystem. The removal of which of the following groups would cause an immediate decrease in the amount of energy flowing through the system?

• Producers
• Consumers
• Decomposers
• Inorganic Nutrients

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What type of relationship do a clown fish and a sea anemone have?

• commensalism
• parasitism
• predator-prey
• mutualism

Tags

NGSS.MS-LS2-2

A close relationship between two different species of organisms living together.

• Commensalism
• Symbiosis
• Parasitism
• Mutualism

A symbiotic relationship in which on species benefits without benefiting or harming the other organism.

• Mutualism
• Symbiosis
• Parasitism
• Commensalism