study hall sitting in assigned seats green cards out on desks not talking!
TRANSCRIPT
Germination: start to grow from a seed or spore into a new individual plantConditions are right for seeds and spores to start to grow and develop into a plant
Video on Seeds:
Brain Pop
Listen for how seeds grow and the different types of plants that produce seeds and spores
Process of Seed Germination
Seeds are protected by a hard shell or seed coat. This shell is VERY tough!
Sometimes seeds need to be eaten by animals to get ride of the hard seed coat.
This helps the seed coat soften and lets germination happen
For others, simply soaking the seed in warm water will soften the seed coat enough.
Dormancy means…
Dormancy means inactivity.
For example, when you are sleeping, you are not being active.
Some seeds require a period of DORMANCY before they germinate (grow).
Why are seeds dormant?
Seeds become dormant when
conditions are not good.
Typically seeds that are dormant are VERY dry and it takes them longer to swell with the water.
Seeds can be dormant for YEARS!!!!
What conditions do they need to come out
of dormancy? moisture
temperature
light
Some seeds need complete darkness to germinate
and in some cases even fire
Seed Germination Seed germination: the process whereby
seeds or spores sprout and begin to grow
This is when the seed swells up with water and begins to grow.
FUN FACT Did you know that pinecones can only release
seeds from being dormant when they are LIT on FIRE!
Before dissecting your lima bean, answer these questions in your notebook
using complete sentences:
1. What does the dry seed look like?
2. How big is the dry seed? Trace the seed in your notebook.
3. How is the wet seed different from a dry seed?