science grade 5 - Al

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Al-Ru’ya Bilingual School
Science department
The organization of living things
1) All living things are made up of one or more
cells.
* Cell is the basic unit of living things .
Each cell is able to perform the functions that support
life .
2)Tissue is a group of special cells working together .
Example : muscle tissue , nerve tissue .
*Plant cells also form tissues.
Facts
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1- Cell is the basic unit of living things .
2-Tissue is a group of similar cells work together to
do a specific job .
3-An organ is a group of different tissues work
together to do a specific job.
4-System is a group of organs work to do a job for
the body.
5-Organisms are made of number of body systems.
Example:
Bark of a tree is a tissue in the plant .
We called this living things organization
3) An Organ is made of group of tissues working
together.
Example : The heart, lung , ears , brain.
*And plant tissues work together ,forming organs.
Example: Roots and leaves are organs in plant
4) Organs working together make organ systems
Example :The heart and blood vessels work together as a
part of the circulatory system, to carry food and oxygen
around your body.
Circulatory system
Al-Ru’ya Bilingual School
Science department
The organization of living things
Q 1/Look at the picture then answer the question :
Single cells
Tissues
Q2/Here are the five levels of body organization and
an example of each level. Write the letter of each
example in the blank.
……….1.Cell
A-
……….2.Tissues
B-
……….3.Organ
C-
Organs
1-What combine to form tissues ?
………………………………………………………………………………………….
2-What combine to form organs ?
……….4.System
………………………………………………………………………………………….
……….5.Organism
D-
E-
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