Levels of Organization in Multicellular Organisms

Question 1

how are cells organised

Answer 1

cells
=>
tissues
=>
organ
=>
system
=>
organism

Question 2

how are tissues formed

Answer 2

large numbers of the same type of cell occur together to form a tissue

Question 3

what are tissues

Answer 3

tissues are groups of similar cells which perform a common function eg. muscle tissue and nerve tissue

Question 4

how are organs formed

Answer 4

a group of different tissues which have a common function form an organ

Question 5

what are organs

Answer 5

the heart is an organ composed of different tissues such as muscle, nerve and connective tissue. all these tissues work towards the common function of pumping blood. The stem, root and leaves are examples of plant organs

Question 6

how are systems formed

Answer 6

a group of different organs with a common function form a system

Question 7

how are organisms formed

Answer 7

the various systems (eg. respiratory system, circulatory system, nervous system, excretory system and reproductive system) work together to form a living organism