شرح ساينس الصف الرابع الابتدائي لغات - الفصل الدراسي الأول
شرح ساينس رابعة ابتدائي - ترم أول

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In This Part :
Part (B)
Savannah forest in Southern Africa
Such as Southern African Savannah.

- It is a grassland habitat with a mild temperature.

- It is characterized by extreme lack of water during the dry season

- Acacia tree is a big tree that grows in Savannah.

- Most large plants cannot grow in this habitat due to drought conditions, as the dry season lasts half of the year.

Amazon rainforest of Brazil
Such as Amazon rainforest of
Brazil.

- It is rainy most of the year, so it is
easy to find water.

- It is characterized by strong winds.

- Kapok tree is a big tree that grows in Amazon rainforest.

- It is hard for some plants in this
habitat to reach sunlight due to the
extra tall trees growing up to 70
meters tall.


Adaptation of the two terrific trees to survive in their environments:
1. Acacia tree (umbrella-shaped tree)
• Its habitat:
It grows in savannah forest in Southern Africa.


• Its structural adaptation:

Leaves
- Tiny leaves grow on the top of the tree to help them hold in water, while soaking up (absorbing) sunlight needed to make food.

- There are sharp spines around the leaves to prevent animals from eating these leaves.

Trunk
- Its trunk is very long, so most animals except giraffe cannot reach its leaves to feed on.


Root
- A very long root called taproot that grows directly downward to search for water as deep as 35 meters below the soil surface.



• Its behavioral adaptation:

Acacia tree can defend itself as follows:
- It produces a poison when an animal begins eating its leaves to make the
leaves taste very bad to keep this animal away.

- It sends a smelly message in the wind to warn other acacia trees nearby
telling them to start making the same poison.

2. Kapok tree (umbrella-shaped tree)
• Its habitat:
It grows in the Amazon rainforest of Brazil.

• Its structural adaptation:
Leaves
Hand-shaped leaves with narrow parts to allow wind to move more gently through the leaves without tearing them.

Root
- Large, wide roots called buttress roots .

- Buttress roots are not planted deeply in the ground, but they grow high up on its trunk to hold the tree firmly in the soggy soil (wet muddy soil).

Seeds
- Kapok tree has fluffy yellow seeds to be easily carried by wind across the forest

• Its behavioral adaptation:
- Kapok tree has delicious-smelling flowers to send messages through wind to attract bats towards it.

- Kapok tree has fluffy yellow seeds to be easily carried by wind across the forest.












Plant Scientist
1. Mangrove tree
Its habitat
Salt water
Its structural adaptation
It has long and strong roots.
This adaptation helps the plant to survive because ……….
To resist the water waves.

2. Water lily
Its habitat
Wetland
Its structural adaptation
It has wide leaves that float on the water surface .
This adaptation helps the plant to survive because ……….
To absorb a large amount of sunlight.

3. Pine tree
Its habitat
Snow

Its structural adaptation
- This tree has a triangular shape.
- It has needle leaves.

This adaptation helps the plant to survive because ……….
- The triangular shape of this tree and its short branches allow the snow to slide easily over it, so its branches don't break.
- The needle leaves to prevent the plant from losing of water.




4. Palm tree
Its habitat
Desert
Its structural adaptation
- It has thick roots.
- It has small leaves.
This adaptation helps the plant to survive because ……….
Both thick roots and small leaves help the plant to resist the strong winds.

5. Barbary fig
Its habitat
Desert

Its structural adaptation
It has sharp spines.

This adaptation helps the plant to survive because ……….
The sharp spines prevent the animals from eating its leaves and fruits.


بالتوفيق
مستر احمد الباشا