The Plant Kingdom: Relationships in The Plant Environment

From wikisori
Jump to: navigation, search

Age

6-9.

Materials


Preparation

Repeat Exp. 15: action of lights on plants.

Presentation

Experiment 16

ACTION OF HEAT ON PLANTS

MATERIALS: 2 small plates, cotton wadding, radish seeds, water, a glass.

  1. Put quite a few radish seeds in a glass with water and leave it for 24 hours.
  2. Pour out the water and then take the two plates and cover them with the cotton.
  3. Scatter the soaked radish seeds on top of the cotton and water both plates well.
  4. Leave one plate in the classroom and put the other in a refrigerator.
  5. Keep both well watered.
  6. Observe them each day and write up your observations.


Experiment 17

ROOTS ALWAYS GROW DOWNWARDS, AND THE STEM?

MATERIALS: A glass, ink-blotter paper, black construction paper, a rubber band, sand, bean seeds, water.

  1. Cut the ink blotter paper to fit around the inside of the glass.
  2. Place the bean seeds between the blotter paper and the sides of the glass making sure they are positioned differently.
  3. Then fill the glass with sand and wet sand.
  4. Cut the black construction paper large enough to wrap around the outside of the glass, holding it in place with a rubber band.
  5. The sand must be kept wet.
  6. Do the same using other seeds.
  7. Observe your glass every day.
  8. Observe what happens and write your observations.


Experiment 18

ROOTS ARE SENSITIVE TO WATER

MATERIALS: a clear container, wide and straight-sided, radish or bean seeds, soft soil, a watering can and water.

  1. Fill the glass container with the loose soil.
  2. Plant the seeds in the soil close to the glass sides and water the soil well where the seeds were sown.
  3. After the roots have developed well in depth, begin to water increasingly farther away from the plants.
  4. Observe the container every day and write your observations.


Control Of Error


Points Of Interest


Purpose


Variation


Links


Handouts/Attachments