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Question
Think what would happen, if seeds did not spread and remained at one place only.
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Solution
If seeds would not spread and would remain in one place only, there can be many problems for those seeds. All the seeds would fall near the parent tree. This will prevent those seeds from getting enough sunlight, air, and water. As a result, most of the seeds would fail to germinate. New saplings, growing under a tree would not grow properly.
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Do you remember that in Class IV you did an activity with seeds? Now try another one.
- Take some chana and three bowls.
- Put five chana in the first bowl and fill it up with water.
- Put a damp piece of cloth or some cotton wool in the second bowl. Now keep the same number of chanas in it. Make sure that the cotton wool or cloth remains wet.
- Put the same number of chanas in the third bowl. Do not put anything else in it. Cover all three bowls.
Observe after two days and note the changes in the bowls.
| Bowl 1 | Bowl 2 | Bowl 3 | |
| Are the seeds getting air? | No | Yes | Yes |
| Are the seeds getting water? | |||
| What changes did you see? | |||
| Have the seeds sprouted? |
In which bowl did the seeds sprout? What difference did you see between this bowl and the other bowls?
How long did it take for the plant to come out from the soil?
Which seeds took the most number of days for the stem to come out of the soil?
Did anyone’s plant dry up or turn yellow? Why did this happen?
What is inside the seed?
How does a big plant grow from a tiny seed?
Make lists of :
Seeds that are flat.
Plants cannot move around. Once they grow, they remain in the same place. But their seeds are great travellers! They can reach far and wide. Look at the picture and see the flying seeds.
- Have you ever seen any seed that can fly?
- What is it called in your area?
- Look at your seed collection. Guess how many of those could have travelled by flying.
Some plants spread their seeds over long distances. When the soybean pods are ripe, they burst and the seeds are thrown out. Have you ever heard their sound?
