Page 10 - Summary 6 2025

Delta Modern Language Schools
Science department
Grade 6
1st term 2024- 2025

• Sap vacuole:

-It is a large sac-like organelles.
-The plant cell has only one special big vacuole called "sap vacuole".
Function
-It stores nutrients, water and waste material inside the plant cell.

• Chloroplasts:
-They are sac-like organelles that contain tiny green granules.
-These granules have green color G.R

Because they contain a green pigment called chlorophyll
Function

-They have chlorophyll that absorb the energy of sunlight for the plant to make

its own food through the photosynthesis process.

Note:-

1.The animal cell has many and small vacuoles.

• Small vacuoles:-

Its Function : They store nutrients, water and waste materials inside animal cell.

2. The animal cell doesn't have cell wall so it doesn't a definite shape as plant cell.
3. Animals have other structure to keep their shapes such as

-Some animals have bones such as cats, dogs ….etc.
-Some animals have hard shell-like cover called "exoskeleton" that gives them
their shapes such as some insects.

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