Question

Take three test-tubes. Fill ¾th of each with water. Label them A, B and C. Keep a snail in test-tube A, a water plant in test-tube B and in C, keep snail and plant both. Which test-tube would have the highest concentration of CO2 ? ​

Answer 1

Answer:

The test tube A will have the highest concentration of carbon dioxide. The carbon dioxide(CO

2 ) comes because of respiration by the snail. Snail is an organism that breaths in O

2and breaths out (CO

2).Hence,(CO

2concentration increases in test tube A.

The test tube B contains a water plant, which takes is (CO

2 ) for photosynthesis and gives out O

2.Hence, more O

2concentration is seen in test tube B.

The test tube C contains both snail and a water plant. The CO

2) produced by the snail is utilized by the plant for the photosynthesis and the O

2released by the plant is utilized for snails respiration.

Therefore The test tube A will have the highest concentration of carbon dioxide.

Answer 2

Test tube A will have the highest concentration of $CO_2$ because test tube A will have snail which expels out $CO_2$ into the tube,in tube C, there is a plant which ibhale $CO_2$ to decrease $CO_2$ concentration in tube C.