Structural Organisation in Animals PPT Biology Class 11

 Page 1


AnimalTissues
Class XI B, Chapter 7
Page 2


AnimalTissues
Class XI B, Chapter 7
Organization of an Organism
Page 3


AnimalTissues
Class XI B, Chapter 7
Organization of an Organism
- A cell is the structural and functional 
unit  of life.
- A cell is a mass of protoplasm 
surrounded  by a plasma membrane.
- The protoplasm of cell is generally with 
a  spherical nucleus and a variety of  
cytoplasmic living cell-organelles like 
the  endoplasmic reticulum, 
mitochondria, Golgi  bodies, centrioles, 
ribosomes, lysosomes,  etc.
- Each cell organelle performs a 
specific  function.
Somatic cells:
- These are general body cells present all  
over the body except reproductive 
organs.  These cells are responsible for 
all the bodily  activities.
Germ cells:
- These are also called ‘sex cells’. These 
cells  are concerned with the 
reproduction and  are present in the 
reproductive  system/organ.
Page 4


AnimalTissues
Class XI B, Chapter 7
Organization of an Organism
- A cell is the structural and functional 
unit  of life.
- A cell is a mass of protoplasm 
surrounded  by a plasma membrane.
- The protoplasm of cell is generally with 
a  spherical nucleus and a variety of  
cytoplasmic living cell-organelles like 
the  endoplasmic reticulum, 
mitochondria, Golgi  bodies, centrioles, 
ribosomes, lysosomes,  etc.
- Each cell organelle performs a 
specific  function.
Somatic cells:
- These are general body cells present all  
over the body except reproductive 
organs.  These cells are responsible for 
all the bodily  activities.
Germ cells:
- These are also called ‘sex cells’. These 
cells  are concerned with the 
reproduction and  are present in the 
reproductive  system/organ.
Tissue
:
- A group of cells similar in form, structure and
embryonic origin which coordinate to perform a specific
function is called a simple tissue,
- while a group of cells, different in their structure and function
but coordinating
to perform a specific function, is called a compound tissue.
- Various tissues combine together in an orderly manner to form
large functional units called organs. Number of organs work in
coordination and give rise to organ-system.
- The branch of science that deals with the microscopic study of
tissues is called
histology.
Page 5


AnimalTissues
Class XI B, Chapter 7
Organization of an Organism
- A cell is the structural and functional 
unit  of life.
- A cell is a mass of protoplasm 
surrounded  by a plasma membrane.
- The protoplasm of cell is generally with 
a  spherical nucleus and a variety of  
cytoplasmic living cell-organelles like 
the  endoplasmic reticulum, 
mitochondria, Golgi  bodies, centrioles, 
ribosomes, lysosomes,  etc.
- Each cell organelle performs a 
specific  function.
Somatic cells:
- These are general body cells present all  
over the body except reproductive 
organs.  These cells are responsible for 
all the bodily  activities.
Germ cells:
- These are also called ‘sex cells’. These 
cells  are concerned with the 
reproduction and  are present in the 
reproductive  system/organ.
Tissue
:
- A group of cells similar in form, structure and
embryonic origin which coordinate to perform a specific
function is called a simple tissue,
- while a group of cells, different in their structure and function
but coordinating
to perform a specific function, is called a compound tissue.
- Various tissues combine together in an orderly manner to form
large functional units called organs. Number of organs work in
coordination and give rise to organ-system.
- The branch of science that deals with the microscopic study of
tissues is called
histology.
T
I
S
S
U
E
S
Epithelial Tissues
( Covering tissues. These tissues are present for protection.)
Connective Tissues
( Supporting tissues. These tissues help in binding different 
body  structures.)
Muscular Tissues
Contractile tissues. These tissues help in movements and
locomotion.)
Nervous Tissues
( Conducting tissues. These tissues help in conduction of nerve
impulses.)