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Q.1 Indicate whether the following statements are True (T) or False (F).
(a) Unicellular organisms have one-celled body. (T/F)
(b) Muscle cells are branched. (T/F)
(c) The basic living unit of an organism is an organ. (T/F)
(d) Amoeba has irregular shape. (T/F)


Answer :

a) Unicellular organisms have one-celled body. ( T )
b) Muscle cells are branched. ( F )
c) The basic living unit of an organism is an organ. ( F )
d) Amoeba has irregular shape. ( T )

EXPLANATION

1) Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism. Unicellular organisms include bacteria, protists, and yeast etc.

2) Muscle cells are not branched as they form the framework of our body. Hence they are spindle shaped.

3) The basic living unit of an organism is a cell. Organ is formed when a group of tissues perform a specific function together and tissues are formed when a group a cells perform a specific function together. So even the basic unit of an organ is a cell.

4) Amoeba has irregular shape because it shows amoeboid movement. In amoeboid movement, amoeba moves through cytoplasm filled projections called as pseudopodia.

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