Bio 20 Flow of energy

The arrows in a food chain or web represent ...

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

Tags

NGSS.MS-LS2-3

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

• 10%
• 50%
• 90%
• 100%

Tags

NGSS.MS-LS2-3

Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?

• There would be a decrease in the small bird population.
• There would be a decrease in the grass/flowers population.
• There would be a decrease in the mice population.
• There would be an increase in the grass/flowers population.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Which of the following best describes the small bird in the food web above?

• primary and secondary consumer
• secondary and tertiary consumer
• primary consumer only
• secondary consumer only

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

The diagram represents a pyramid of energy in an ecosystem.  Which level would most likely contain organisms that can photosynthesize?

• A
• B
• C
• D

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

If there are 100 kcal of energy available in the producers, how much energy would be available to the herbivores?

• 10 Kcal
• 1 Kcal
• 100 Kcal
• 1000 Kcal

Tags

NGSS.MS-LS2-3

If these organisms were arranged in an ecological biomass pyramid, which organism would have the least amount of biomass?

• coyote
• insect
• lizard
• shrub

If the small bird on trophic level 3 in the pyramid has 50 kcal of energy available, how many kcal of energy were present in the trees?

• 5
• 500
• 5000
• 0.5

Tags

NGSS.MS-LS2-3

Which organisms would likely have the largest biomass?

• mountain lions and eagles
• snakes and frogs
• squirrels and deer
• flowers, trees and fruit

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Kilocalories (kCal) is a measure of energy. If there are 1000 kCal available for the producers in trophic level #1, how much energy is available for the secondary consumers trophic level #3? (Hint: use the Rule of 10s)

• 10 kCal

• 1 kCal

• 100 kCal

• 1000 kCal

Tags

NGSS.MS-LS2-3