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प्रश्न
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.
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उत्तर
Water and air are required for the germination of seeds. The seeds would not show changes in the absence of water and air.
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संबंधित प्रश्न
Plant your seeds
Take a clay pot or a tin can with a wide mouth. Make a small hole at the bottom of the can. Fill your can with soil. Put four or five seeds of the same kind in the soil and press them gently. Different groups can plant different kinds of seeds, such as mustard (sarson), fenugreek (methi), sesame (til) or coriander (dhania).
Which seeds took the most number of days for the stem to come out of the soil?
Which seeds did not grow at all? Why?
What would happen if the plants do not get water?
What is inside the seed?
Do some plants grow without seeds?
Make lists of :
Seeds of vegetables.
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?
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?
Think what would happen, if seeds did not spread and remained at one place only.
