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. Test tube A will have the highest concentration of CO2 because test-tube A will have Snail which expels
out CO2 into the tube. In tube C, there is a plant which will inhale CO2 to decrease CO2 concentration in the tube C.Test tube A will have the highest concentration of CO2 because test-tube A will have Snail which expels out CO2 into the tube. In tube C, there is a plant which will inhale CO2 to decrease CO2 concentration in the tube C. ​

Answer 1

Answer:

Test tube A will have highest concentration of CO₂ as test tube A has a snail, which will exhale CO₂. Test tube B contains a water plant, so it will intake all the carbon dioxide and exhale O₂. Test tube C contains both, snail and water plant, so the level of CO₂ will be decreased as the plant will intake carbon dioxide.

Answer 2

Test tube A will have the highest concentration of CO2. This is because test tube A contains snail. Snail is an organism that breathes in O2 and breathes out CO2. Hence, CO2 concentration increases in test tube A.

Test tube B contains a water plant, which takes in CO2 for food synthesis and gives out O2. Hence, more O2 concentration is found in test tube B.

Test tube C contains both a snail and a plant. The CO2 produced by the snail is utilized by the plant for its food synthesis and the O2 released by the plant is utilized by the snail for respiration.

Therefore, test tube A has the highest concentration of CO2.