To investigate the effects of water, oxygen and temperature on germination
To show the effect of water oxygen and temperature on germination – Sample Questions
- What is meant by dormancy in seeds?
The time when a seed undergoes no growth & reduced metabolism
- Name the type of seed used in this experiment
Mustard or cress
- Give 2 benefits of dormancy in seeds
It allows the seed time to avoid the harsh conditions of winter and also allows the young plant time to develop within the seed
- What is meant by germination of seeds?
This is the time when a plant has a period of regrowth following dormancy
- How many factors are altered or changed in each dish?
- Why only this amount?
So that when the seeds do not germinate you are able to conclude with certainty that the factor you have changed is the definite reason
- Why are ten seeds used in each petri dish?
The more seeds you use the more accurate the results but to be fair the same amount of seeds must be used in each case, it also prevents individual differences
- What is observed that indicates that germination has taken place?
The seeds produce radicles and plumules
- In this activity which seeds are used as a control?
The seeds that have all the conditions i.e. water, temp. of 25 degrees, & oxygen
- What do the results tell you about the optimum conditions for germination?
That if one or any conditions are missing the plant will not germinate
