Tuesday, 2 April 2013
Tissue
What is a tissue?
Answer:
Tissue is a group of cells
that are similar in structure and
are organised together to perform a specific task.
are organised together to perform a specific task.
Question 2:
What is the utility of tissues in multi-cellular
organisms?
Answer:
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
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
multicellular organisms are able
to perform all functions efficiently.
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