Monday, 8 April 2013
Sample:
What is a tissue?
Tissue is a group
of cells that are similar in structure and are organised together to perform a
specific task.
Question 2:
What is the utility of tissues in multi-cellular organisms?
In unicellular organisms, a
single cell performs all the basic functions such as respiration, movement,
excretion, digestion, etc. But in multicellular organisms, cells are grouped to
form tissues. These tissues are specialised to carry out a particular function
at a definite place in the body. For example, the muscle cells form muscular
tissues which helps in movement, nerve cells form the nervous tissue which
helps in transmission of messages. This is known as division of labour in
multicellular organisms. It is because of this division of labour that
multicellular organisms are able to perform all functions efficiently.
Subscribe to:
Comments
(Atom)
