Productivity of an Ecosystem

Autotrophs

• use photosynthesis.

• are able to survive without oxygen.

• are primar consumers.

• cannot assimilate carbon.

Tags

NGSS.HS-LS2-5

NGSS.HS-LS1-5

A zebra is an example of

• a secondary consumer

• a producer

• a primary consumer

• a detritivore

If gross primary productivity in a wetland is 3 kg C/m2/year and respiration is 1.5 kg C/m2/year, what is the net Primary Productivity of the wetland?

• 1.5 kg C/m2/year

• 2 kg C/m2/year

• 3 kg C/m2/year

• 4.5 kg C/m2/year

Tags

NGSS.HS-LS2-4

NGSS.HS-LS2-5

The gross primary productivity of an ecosystem is?

• the total amount of biomass.

• the total energy captured by photosynthesis.

• the energy captured after accounting for respiration

• the energy available to primary consumers.

Tags

NGSS.HS-LS2-4

Ecosystem boundaries are?

• boundaries to nutrient flows

• based primarily on topographic features.

• are only used for ecosystems smaller than a few square hectares

• dependent on many subjective factors.

What percentage of energy is passed on to each tropic level?

• 10%
• 50%
• 90%
• 100%

Tags

NGSS.MS-LS2-3

In this Food Web Pyramid Which type of consumer gets only 10% of the energy stored in plants?

• Herbivore
• Carnivore
• Omnivore
• Top carnivore

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

In which trophic level would the biological magnification of the pesticide DDT be most evident?

• oak tree
• caterpillar 
• bluetit
• sparrowhawk

Tags

NGSS.HS-LS2-4

NGSS.HS-LS2-3

NGSS.HS-LS2-6

NGSS.HS-LS4-5

According to the 2nd law of thermodynamics, as energy is transferred or transformed, it becomes more and more ____________.

• hot
• dissipated
• disordered
• intense

Tags

NGSS.HS-PS3-4

In the first law of thermodynamics, energy can neither be ___________nor ______________.

• measured, assessed
• created, destroyed
• homogeneous, heterogeneous
  
• biotic, abiotic