Question

question 2 of 5
in which sealed container would the organisms be able to continuously cycle
o₂ and co₂ gases?
a. an aquarium with water plants and a snail
b. a terrarium with mice and wood shavings
c. an aquarium with fish and plastic plants
d. a terrarium with a frog and a pool of water

Explanation:

• Option A: Water plants can perform photosynthesis (using \(CO_2\) and producing \(O_2\)) and the snail can perform respiration (using \(O_2\) and producing \(CO_2\)). This creates a cycle of \(O_2\) and \(CO_2\) in the sealed container.
• Option B: Mice respire (consume \(O_2\) and produce \(CO_2\)), but wood shavings are non - living and do not perform photosynthesis. So, there is no production of \(O_2\) from \(CO_2\) to complete the cycle.
• Option C: Fish respire (consume \(O_2\) and produce \(CO_2\)), but plastic plants are non - living and do not perform photosynthesis. So, there is no production of \(O_2\) from \(CO_2\) to complete the cycle.
• Option D: A frog respires (consume \(O_2\) and produce \(CO_2\)), but there is no photosynthetic organism (like a plant) in the terrarium to convert \(CO_2\) back into \(O_2\).

Answer:

A. An aquarium with water plants and a snail