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Cells can be of many different shapes
Some common shapes of cells are
Spherical Cells
They are round in shape
Example - Red Blood Cells in Humans
Spindle Cell
They are elongated like a spindle
Example - Muscle Cell in Humans
Elongated Cell
They are shaped like a branch of a tree
Example - Nerve Cells in Humans
The shape of the cell is so that it can help in its function
For Example -
- Nerve Cells are long and branched because they need to make contact with other nerve cells and carry signals over long distances (from brain to other parts of the body)
- Muscle cells are spindle shaped because muscles contract and relax. So, spindle shape makes it easier to contract and relax
What is shape of amoeba?
Amoeba is a single celled organism
Has no regular shape, it keeps on changing it's shape so it is irregular in shape
What is pseudopodia in amoeba?
You will observe that a varying length sticking outside the body of amoeba,this will appear and disappear as the amoeba moves or feeds
This varying length is known as Pseudopodia
White blood cell in human body can also change shape ?
Yes,white blood cells can change shape
Questions
NCERT Question 1 (b) - Indicate whether the following statements are True (T) or False (F).
Muscle cells are branched. (T/F)
NCERT Question 1 (d) - Indicate whether the following statements are True (T) or False (F).
Amoeba has irregular shape. (T/F)
NCERT Question 2 - Make a sketch of the human nerve cell. What function do nerve cells perform?
