Lesson Plan of Respiration in Plants
General Science Grade VI
Students’ Learning Outcome
· Explain the importance and process of respiration in plants
Information for Teachers
· Like all other organisms, plants require oxygen for getting energy from food
· They also require to release extra carbon dioxide from their bodies
· During day time plants utilize the carbon dioxide (produced during respiration) in photosynthesis and for respiration, they utilize the oxygen produce during photosynthesis
· Plants don’t have specialized breathing mechanism for gaseous exchange like animals
Material / Resources
Germinating seeds, flask, thermometer, stand
Worm up activity
· Ask the following questions to the class.
o What do you need to grow?
(Expected response: food and energy)
o From where do you get this energy?
(Expected response: by the breakdown of food)
o Do you know the name of the process involved in getting energy from food?
(Expected response: respiration)
· Now introduce the today’s topic to the students.
· Ask the questions:
o How the chemical energy stored in food molecules is made available for life process?
(Expected response: by chemical reaction)
o Inform the students that these chemical reactions are collectively called respiration.
o Link the above discussion by explaining the process of respiration in terms of a simple equation.
o Draw this equation on the board:
Oxygen + Glucose Energy
Raw Materials Products
· Set the apparatus as shown in diagram and draw this diagram on the board to explain that this experiment is used to investigate the release of energy (heat) during respiration
· Now conclude this activity by asking the following questions
o Why germinating seeds are used in this experiment?
(Expected response: in germinating seeds the process of respiration is going on)
o What will be the change in the reading of the thermometer after the experiment?
(Expected response: an increase in the reading of the thermometer)
o How does the measurement of thermometer indicate that the weeds have released energy?
(Expected response: in germinating seeds the process of respiration is going on. During the process of respiration the energy is released)
· Ask about the importance of respiration and enlist the points on the board and ask the students to copy on their notebooks.
Sum up / Conclusion
· Ask the students, what we have learnt? Expected response will be: in the process of respiration plants take in oxygen and release carbon dioxide (CO2), and this process continues day and night.
· During day time both process of photosynthesis and respiration are going on thus CO2 during respiration is used in photosynthesis and oxygen released during photosynthesis is used for respiration.
· Draw the given table on the board
· Ask the students to fill and copy on their notebooks
· Write the following questions on the board and ask them to copy and solve as home work on their notebook
o In contrast to photosynthesis, why respiration in plants continues during day and night
o What is the purpose of respiration?
o What is the energy released in respiration used for?