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प्रश्न
Abdul saw a huge tree that had fallen on the roadside. He remembered the neem tree in his courtyard. He could see some of its broken roots. Abdul thought–
- Would someone have uprooted such a big tree or would it have fallen on its own?
- How old would this tree be?
- Abdul on seeing a tree surrounded by cemented ground, thought that how will it get rain water?
उत्तर
- Strong winds (natural disasters) could have uprooted that tree.
- This tree would not be less than 50 years old.
- This tree gets water through its roots which go deep in the soil.
APPEARS IN
संबंधित प्रश्न
The stick which was stuck in the ground fell very easily. It was difficult to pull out a small grass. Why?
Look at some plants and trees around you. Imagine how deep and spread out the roots of these are?
On putting water in the soil where the plants are growing, the dropping leaves become fresh again. How?
Which of the plants around you need regular watering?
- What will happen, if nobody gives water to these plants?
Which of the plants around you do not need watering. Where do they get water from? Make two guesses.
Look at the pictures below and find out which of these vegetables are roots.
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Nowadays Abdul keeps thinking about all kinds of plants that he sees.
Abdul saw a plant growing out of a wall in school. He wondered-
- How deep must the roots of this plant be going?
- How do the roots get water?
- How big will this plant grow?
- What will happen to the wall?
- Can you give the name of the plant in the picture?
Have you ever seen a plant growing from a crack in a wall?
- Where was it?
- Did you have any questions when you saw it?
- What were some of your questions? Ask elders and find the answers.
- Find out the name of the plant you saw.
- Have you swung from a banyan tree?
- What did you hold to swing?
- Have you seen any tree which has roots growing from its branches?
Get together with 3-4 of your friends – From the list of things given, decide who will bring which thing.
A transparent glass tumbler or bottle with a wide mouth, rubber band or thread, some seeds of moong, wheat, bajra, mustard, channa (chickpeas) or rajma (red beans) and a wad of cotton wool.
Each group will work with only one kind of seed. Soak a few seeds (5-6) overnight in a bowl full of water. Take the wad of cotton wool and wet it. Put it on the mouth of the tumbler. Tie it tight to the mouth with a rubber band or thread. Remove soaked seeds from the water and place them on the cotton wool. You will have to take care that the cotton wool does not dry. Observe the changes that take place for the next 10 to 12 days. Did you observe the seedlings come out of the seeds? Draw the picture of the seedling as it looks on the fourth and the eighth day.
Write in your notebook
- What difference did you observe in the seeds after soaking? Compare with dry seeds and write.
- What do you think would happen if the cotton wool had been left dry?
- In which direction did the roots grow? And the stem?
- How big did the plant grow in the cotton wool?
- Did small plants come out from all the seeds?
- What is the colour of the roots?
- Did you see any hair on the roots?
- Try and pull out one little plant from the cotton wool. Were you able to pull it out? Why?
- Did you see how the roots grip the cotton wool? Do you think that the roots hold the soil in the same way?
- Also, look at the plants grown by your friends.
