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प्रश्न
How do seeds spread to far-off places? Write in your own words.
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उत्तर
(a) Seeds are spread by birds, animals, air, and water. Many animals eat fruit
and throw seeds. Thus these animals help in spreading seeds.
(b) Some seeds stick to the fur of animals and thus are transported to other places.
(c) Some seeds have thin hairs and are lightweight. These seeds float on air and travel to other places.
(d) Some seeds float on water and thus travel to far-off places.
APPEARS IN
संबंधित प्रश्न
What things are soaked before cooking in your house? Why?
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? |
On which day did the height of the plant increase the most?
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?
Do some plants grow without seeds?
Make lists of :
Seeds that are used as spices in your home.
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 picture. This seed cannot fly, but it can still travel by sticking to the fur of animals or on our clothes. In this way, it gets a free ride!
Did you get any new ideas from these seeds?
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.
