Energy flow in Ecosystems

Which of the following illustrates the correct ordering of trophic levels?

• decomposers-carnivores-autotrophs-herbivores
• herbivores-autotrophs-carnivores-decomposers
• autotrophs-herbivores-carnivores-decomposers
• carnivores-producers-omnivores

Tags

NGSS.MS-LS2-3

The efficiency of energy transfer from a lower trophic level to the next highest level is roughly

• 1%
• 10%
• 100%
• 1000%

Tags

NGSS.MS-LS2-3

Trophic levels are represented by 

• squares
• circles
• pyramids
• lines

Tags

NGSS.MS-LS2-3

Food chains are interconnecting food webs.

• true
• false

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-2

What does every food chain start with?

• producers
• sun
• consumer
• decomposers

Why is a shark a carnivore.

• because it eats seaweed
• because it eats dead animals
• because it eats sand 
• because it eats other animals

In the energy pyramid here, how much of the energy in each level gets lost as heat or used by the organism for survival?

• 80%
• 90%
• 10%
• 20%

Tags

NGSS.MS-LS2-3

The arrows in a food chain or web represents what?

• They point to the organism that is being eaten.
• It shows how sunlight flows within an ecosystem.
• They show what direction the energy is flowing between organisms. 
• They represent how water is transferred within a habitat.

Tags

NGSS.MS-LS2-3

Which of the following is a herbivore?

• cricket
• frog
• hawk
• shrew

Tags

NGSS.MS-LS2-4

The shrew provides energy for the _______.

• cricket
• grasshopper
• frog
• snake

Tags

NGSS.MS-LS2-3