VIIC Science Topic taught (Summary) and Homework

Topic taught Science
Nutrition in plants
    20 April
(Video), Discussion,
 Display fig 1.2 and explain the structure and function of stomata
Video 2 (carbon dioxide is necessary for photosynthesis)
 Video 3 (sunlight is necessary for photosynthesis)
 Discuss, explain why carbon dioxide 
and sunlight are necessary for photosynthesis.

 The importance of destarching the plant used in the experiment.
 The importance of the starch test.
 The role of potassium hydroxide in Video 1.
oxygen necessary for respiration will not be adequately available
 most plants may die out due to lack of food
 most heterotrophic organisms will also die if plants will not be available
Homework -
Why is potassium hydroxide used in the experiment?
 Why is the starch test conducted?

 Why was the plant kept in dark for 3 days?
 Why is alcohol used?
 Why is the leaf covered with black paper?
Complete the Check your progress given on page no. 6 of the textbook.

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