Photosynthesis & Cellular respiration in Plants
Activity Author
Surekha Waldia
Duration
3-4 days to be done in class
Objective: Key Core Life Skill to be developed
Array
Objective: Key Learning Domains to be developed
a:3:{i:0;s:8:"Remember";i:1;s:10:"Understand";i:2;s:11:"Application";}
Implemented this in classroom
Yes
Objectives to be achieved
1. Understand the role of photosynthesis and respiration by doing the following investigation on light and role of chlorophyll on production of carbon dioxide at night
Underlying Concept behind this activity
The process of photosynthesis and cellular respiration in plants are two processes that work together in a cycle in plants.
One happens during daytime and other at night.
Resources required for conducting the activity
A few potted house plants
Black construction paper
tape
Lime water
Straw
Plastic bag
A funnel that will it in the end of the straw to pour lime water
Class Activity Details
Step 1: Put a piece of black paper on the leaf and stick with tape. Leave it for 2-3 days. Remove the tape after 3 days and make your observation.
Step 2: On second plant put a poly bag on the plant and tape the end of the bag to the pot of the plant and leave it covered overnight in a dark area.
Step 3: Next day remove the bag from the plant and seal it quickly. Now put a straw in the bag and pour lime water. See the results.
Step 4: Connect the results with the cellular respiration among animals and ask the question How does this investigation help us understand cellular respiration?
Practice worksheets
Links to refer:
https://books.google.co.in/books?id=Ez2H60irelAC&pg=PA53&lpg=PA53&dq=brainstorming+questions+on+soil+class+7&source=bl&ots=TlTOv52tXW&sig=SFaUqHdBhj7WBdChtt8RuyyISOc&hl=en&sa=X&ved=0ahUKEwjQr87Vkd7SAhUMpo8KHZhcBOEQ6AEINzAE#v=onepage&q=brainstorming%20questions%20on%20soil%20class%207&f=true
Chapter 8 Energy Cycles in ecosystem and importance in plants
Uploaded File
Download File
Brainstorming questions asked in class
1. What do you think will happen when tape is removed from the leaf after 3 days? Explain why.
2. What happens when plants sleep?
3. Do you think plants release water too? How can this investigation show that
4. What else do you think we will get in the bag? Children might say CO2. . Test the same with lime water test. Ask children what might happen to lime water.
5. Make them exhale air into the jar with lime water. Ask them why do you think lime water became milky? Let them think on the reaction that happens between lime and CO2 and explain the logic.
Evaluation parameters to assess the understanding of the students
Accurate, Clearly explained, Complete, Knowledgeable, Methodical, Precise, Organized, Well crafted/ articulated, Informative
Impromptu changes made if any during activity, reasons
Any suggestions for other teachers while implementing this activity in classroom.
To engage students its best if you connect one concept with other aspects related to it.
