The Plant Kingdom: The Study of The Stem

Age
6-9.

Preparation
Observation of real stems and their types Nomenclature of the stem

Presentation
Chart 7

THE PISTON PUMP


 * 1) Water will naturally go from an area of greater water content, to an area of less water content.
 * 2) It will naturally equalize its own pressure.

Experiment 6

ASCENT OF LIQUIDS IN THE PLANT

MATERIALS: Flower with stem cut during the experiment, glass jar with a wide mouth, red dye or food coloring.


 * 1) Fill the jar 3/4ths full of water and color it with a little dye.
 * 2) Then freshly cut the flower and stem from the plant, immediately placing it in the colored water.
 * 3) Then immediately cut the stem again while under the water.
 * 4) Observe what happens and write your observations.

Experiment 7a

ASCENT OF LIQUIDS IN THE PLANT

MATERIALS: A well developed corn plant or another plant still growing in the ground, a sharp knife.


 * 1) Cut the stem of the plant.
 * 2) Observe what happens and write your observations.

Experiment 7b

CAPILLARITY

MATERIALS: 3 glass tubes of different thicknesses, one of which is a capillary tube, a pitcher of water, red dye or food coloring, an eye dropper, a small glass container.


 * 1) Fill the glass container with water, 3/4ths. full.
 * 2) With an eye dropper, put a drop of red dye in the water and then immerse the three tubes.
 * 3) Observe what happens and write your observations.

Experiment 8

FORMATION OF WATER VAPOR

MATERIALS: A flower pot containing a plant with many green leaves, a large transparent plastic bag, a piece of ribbon, a watering can and water.


 * 1) First water the plant in the flower pot.
 * 2) Then cover the green parts of the plant with a bag and tie the bag around the bottom of the stem.
 * 3) Tie it tightly so that on air can enter.
 * 4) Then place the plant in the light but not the sun.
 * 5) Observe the plant after 24 hours and thereafter.
 * 6) Keep the soil well watered.
 * 7) Observe what happens and write your observations.

Chart 8

THE SUN'S DRINK


 * 1) The liquids in a plant automatically proceed to the top of the plant.
 * 2) The full plant seeks out the light since the light is what enables the plant to produce nourishment.

Experiment 9

WATER IS NECESSARY TO THE PLANT

MATERIALS: 3 test tubes, water, oil, three small plants, test tube rack.


 * 1) Put the water and one plant in one test tube.
 * 2) In another test tube put the oil and a plant.
 * 3) In the third test tube put only a plant.
 * 4) Observe what happens and write your observations.