Vincent Massey Junior High School

Plants for Food and Fibre

Germination
Plant Processes (Photosynthesis, osmosis, diffusion)

Germination

Dates to Remember:

  • May 13: Set up germination lab- Procedure A (small groups) and B (whole class)
  • May 17: Complete notes and activities on Structure and Function
  • May 22- 24: Plant reproduction
  • May 24: Germination lab due: Test on Plant Structure, Function and Reproduction.
  • May 27 - 30: Plant processes
  • May 31: Video day
  • June 3-4: Soils
  • June 5-7: Plants and People
  • June 10: Catch-up day
  • June 11: Unit test: Notebook due for marking

Activity: Observing Germination

Problem: What changes can you observe when a seed germinates?

Materials: seeds (beans or raddish seeds), 250ml beaker, paper cup (punch drainage hole in bottom), potting soil, paper towel, masking tape.

Procedure A:

  1. Label beaker and pot with group names
  2. Crumble a piece of paper towel and place loosely in beaker. Put 2 to 3 seeds between paper and glass at about same depth.
  3. Place potting soil into paper cup to about 1cm from top. Place the SAME kind and number of seeds in the soil as you had in the beaker.
  4. Add 50 mL of water to both beaker and cup.
  5. Place both in tray on cart.
  6. Over the next week, keep paper towel and soil moist but not so wet that the seeds are under water.
  7. Make observations and drawing of the seedlings, making particular attention to the root structure.

Procedure B:

  1. Design a similar activity to compare the effects of different conditions on the germination of seeds. Decide which variables you want to investigate: e.g. different depths of planting, different temperatures, different degrees of moisture, different light conditions.
  2. Determine how you will measure and record these differences.
  3. As a class, we will set up experiments that will allow for measurement of the different variables.

Analysis :

  1. What emerges from a seed first?
  2. In Procedure 1 you have 2 manipulated variables. What are they?
  3. Did the position of the seed affect its germination in any way? If so, how?
  4. Compare germination is soil with germination in a moist paper towel. What difference(s), if any, did you observe?
  5. What can you infer about the development of the seeds in moist soil compared with those with moisture but no soil?
  6. Research and describe what happens within a seed as it germinates?
  7. How could you discover the best combination of conditions for the germination of a particular seed?
 

Resources: Text book page 128, p. 125

 

 

Calgary Board of Education
All contents copyright © 1999, CBE. All rights reserved.
Revised: January , 2002
Author: Diane Nowlan
jdnowlan@cbe.ab.ca