Please answer all questions. Thank you. 1. Daphnia (water fleas) are small aquat

Question

Please answer all questions. Thank you.

1. Daphnia (water fleas) are small aquatic animals that we use often in our lab courses Leftover" Daphnia at the end of lab exercises become part of a "Daphnia farm in our lab rooms. The farm" is basically a large glass jar. Inside the jar we put pH-balan pond water and Elodea, an aquatic plant. Green algae, small microscopic plants, grow on th e sides of the jar. An occasional worm or snail may be seen in the farm, as those animals often "hitchhike" on the Elodea we put into the jar. The jar is kept sealed by a piece of plastic or glass and stored next to a window. All the organisms live success- fully in the jar What is the ultimate source of energy for this ecosystem? Which organisms in the farm" can directly tap into that energy sourcef Which of the organisms in the "farm are animals? How would the animals in the "farm" obtain the chemical energy they need for sur- vival in the jar? Circle the appropriate trophic level for each organism in the "Daphnia farm" listed below 2. consumer consumer consumer Trophic Level decomposer decomposer decomposer producer producer producer Organism Daphnia Elodea snail

Explanation / Answer

1) Ultimate source of energy for this ecosystem is sun light which comes through window.

Elodea can directly tap into that energy source as it is a photosynthetic , green aquatic algae.

Daphnia and snail are animals in this farm.

The animals obtain the chemical energy by feeding upon the alga Elodea trap solar energy and convert it into chemical energy .

2. Daphnia - Consumer

Elodea - Producer

Snail- Consumer

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