Indicate whether the following statements are True (T) or False (F). (a) Unicellular organisms have one-celled body. (T / F ) - True. (b) Muscle cells are branched. - (T / F) - False (c) The basic living unit of an organism is an organ. (T / F) - False (d) Amoeba has irregular shape. - (T / F) - True. Make a sketch of the human nerve cell. What function do nerve cells perform? Ans Nerve cells receive and transfer messages, thereby helps to control and coordinate the working of different parts of the body. Write short notes on the following: (a) Cytoplasm (b) Nucleus of a cell Ans. (a) Cytoplasm: The jelly-like substance present between the cell membrane and the nucleus. It contains various other components or organelles like mitochondria, golgi bodies, ribosomes etc. (b) Nucleus of a cell: It is an important component of the living cell. It acts as control centre of all the activities in a cell. It is generally spherical and is located in the centre of the cell. It is separated fro...
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