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प्रश्न
Which seeds did not grow at all? Why?
उत्तर
All seeds grow well in the presence of water and air. If either of these two factors is absent then the seed cannot grow.
APPEARS IN
संबंधित प्रश्न
What things do you eat after sprouting? How are they sprouted? How much time does it take?
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? |
What would happen if the plants do not get water?
Which was the smallest seed and which was the biggest seed in your collection?
Make lists of :
Seeds that are flat.
Make lists of :
Make more groups. How many groups of seeds did you make?
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 picture 1 and see the flying seeds.
Picture 1
Picture 2
What is it called in your area?
Look at the pictures given below and guess how the seeds travel and reach different places.
Make a list of the different ways by which seeds are spread.
Reena has drawn this picture of the seed sprouted by her. What do you think the seeds need for sprouting? Write in your own words. How would Reena’s seeds look if they did not get the things needed? Show by drawing a picture.
