Name of the teacher : Asha purushothamen Std: IX C
Name of the school : N.S.S G.H.S Pandalam Strength: 39 / 40
Name of the subject : Biology Date: 19-6-14
Unit : The Sign of Life Duration : 45 min
Lesson : Water and CO2 into the leaves
Develop different dimension of knowledge, process skills and
attitudes on water and CO2 into the leaves through lecture
method, individual laboratory, demonstration, group
discussion and evaluation by questioning, participating in
practical work and group discussions.
Chlorophyll, Stomata, Xylem vessels, Root hair, Osmosis
1. Water from soil enters the root hair of the plant through
2. In plants, water moves up through xylem vessel.
3. CO2 enters the leaves through stomata.
Water enters into the plant through root hairs and CO2 enters
the leaves through stomata.
Raw materials needed for photosynthesis such as CO2 enter
the leaves through stomata and water from soil enters the
plant body through root hair by osmosis.
1) Acquires knowledge about the movement of water in the
plant body and entry of CO2 into the leaves.
2) Develops understanding about the passage of water and
CO2 into the leaves.
3) Recalls the structure of leaf
4) Recognizing the different parts like stomata and xylem.
5) Compares the transport of water and CO2 into the leaves.
Plants prepare their food by means of photosynthesis using
CO2 and water.
1) Chart showing the transport of water and CO2 into the
2) Pepperomium plant, ink, water and beaker
3) Text book of XIth Std by SCERT, Kerala
4) Hand book
CLASS ROOM INTERACTION PROCEDURE EXPECTED PUPIL
Teacher make rapport with the students by asking questions related
to contextual situation.
1. The process of photosynthesis takes place in which part of
2. Which are the raw materials needed for photosynthesis?
3. How CO2 and water enters into leaves?
Teachers show pepperomium plant with root hairs placed in a bottle
with coloured solution and ask students to observe the movement of
solution into the plant body.
Water enters into the plant body through root hairs by osmosis.
Water moves up through the xylem vessels.
Teachers show a chart on the structure of stomata in leaves and entry
of Co2 into it and ask student to observe the chart?
Pupil interacts with the
CO2, water, sunlight
Pupil will not be able to
Students observe the
Student observe the
Co2 from the atmosphere enter into the leaves through a specialized
structure called stomata.
Teacher show an uncompleted flow chart on the text and ask the
students to read the passage of Co2 and water into the leaves and ask
students to complete the chart.
Students complete the
Soil Water Root hair Xylem
Water from the soil enters the root hairs through osmosis. Then it
moves up through the xylem vessels and enters the leaves. At the
same time Co2 from the atmosphere enters the leaves through
Water & CO2 into leaves Std: IX C
Strength: 39 / 40
Stomata – bean shaped – guard cell Date: 19-6-14
Atmosphere – CO2 stomata Leaf
Soil Water Root hair Xylem
1. Explain how water enters into leaves?
2. Explain how Co2 enters the leaves?
Draw a flow chart on the entry of Co2 and water into the leaves.