ACTIVITY: Transfer of energy through the trophic levels

The most essential factor controlling the kind of species that dwell in an ecosystem is _______.

• the flow of energy

• biodiversity

• Sunlight

• food availability

Photosynthesis produces energy in the form of _______.

• plants

• sugar

• both plant and sugar

• neither

From the image, which is an autotroph and a producer?

• eagle

• snake

• fungi

• grass

The grasshopper, rat, snake; and eagle are called ________.

• producers and autotrophs

• consumers and autotrophs

• consumers and heterotrophs

• all of the answers

What are the two types of food chain?

• Grazing and detrimental

• Grazing and detrital

• Greyzing and detrimental

• Greyzing and detrital

At every trophic level, what percentage of energy from the food in the previous trophic level is consumed?

• 90%

• 9%

• 10%

• 1%

The term used to refer to each level to which energy is passed from one to the other is called

• a. Trophic level

• b. Energy level

• a only

• both a and b

What happens to energy as it moves up the food pyramid, from producers to tertiary consumers?

• increases

• decreases

• stays the same

Which of these are classified as heterotrophs or consumers?

• a. Herbivores

  Carnivores

  Omnivores

• b. Detritivores/

  Decomposers

• a only

• both a and b

Fill in what's missing in this food chain:

SUN--> producer--> primary consumer-->secondary consumer--> tertiary consumer--> ______