Science, asked by Student5625, 1 month ago

What will happen if the KOH solution is removed from the conical flask containing germinating seeds in the experiment to show that Co_{2} is released during respiration ?​

Answers

Answered by Glorious31
5

Answer:

This concept is from the chapter Life Processes of grade 10 biology (CBSE)

In case if the solution of KOH i.e. Potassium hydroxide is removed from the bell jar , no carbon dioxide will be absorbed by the KOH solution .

Thus , letting enough carbon dioxide to be present in the jar to allow photosynthesis normally by the plant .

All of this will lead to an end result that both the plants from jar A and jar B will show starch indicated by blue-black colour when tested with iodine .

Complete experiment explained :

Step 1 : Take 2 potted plants of same kind and almost same size . Leave them in sunlight for 3 to 4 hours so that they can complete photosynthesis and produce some amount of starch. Now check for starch with iodine solution. Both the leaves from both the plants will turn blue-black indicating that both are containing starch .

Step 2 : Take 2 bell jars and place either the plants completely or 1 leaf from each in them . In 1 of the bell jars place a watch-glass with KOH  i.e. Potassium Hydroxide solution . This will absorb CO2 showing a difference in the end.  

Step 3 : Seal the jars with vaseline to prevent any interference of atmospheric gases . Now , place both the jars in sunlight for 2 hours .

Step 4 : Take the leaves and test starch with iodine solution .

Observation :

Leaves from the jar containing KOH will not show blue-black colour which means they lack starch .

During photosynthesis every component is important . As KOH absorbed CO2 complete photosynthesis couldn't occur .

Hence , when absorbing component KOH is removed photosynthesis WILL occur .

Answered by Anonymous
9

Question 12.

What would happen if test tube containing KOH solution is removed from the conical flask in the set-up?

Answer:

CO2 released during respiration of seeds will not be absorbed and there will be no rise in the level of water.

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