Question

1. Why was plant initially kept in darkness for 24 hours?
2. what is the function of sodium hydroxide solution
kept in flask?
3. Select the correct leaf from the five choices 1,2,3,4,5. Rewrite the correct answer by filling in the appropriate letter for the question that follow:
a. After the starch test, leaf X would look like.
b. After the starch test, leaf Y would look like .
4. The experiment with leaf Y shows that photosynthesis requires the presence of certain factors. Mention any one factor.​

Answer 1

ANSWER :

1. The plant was initially kept in dark to destarch the leaves .

2. Sodium hydroxide absorbs the carbon- dioxide thereby making the flask C0₂ free .

3. a. 3

   b. 5

4. carbon - dioxide  {CO₂} , Chlorophyll , Sunlight .