Make a sketch of the human nerve cell. What function do nerve cells perform?
Functions of the nerve cells :
(i) Nerve cells help in the transfer of messages from various body parts to brain and brain to various parts of the body.
(ii) They also help in the control and coordination of the different parts of the body.
Which part of the cell contains organelles?
Make sketches of animal and plant cell. State three differences between them.
State the difference between eukaryotes and prokaryotes.
Where are chromosomes found in a cell? State their function.
‘Cells are the basic structural units of living organism.’ Explain.
Explain why chloroplasts are found only in plant cells?
Complete the crossword with the help of clues given below :
Across
1. This is necessary for photosynthesis.
3. Term for component present in the cytoplasm.
6. The living substance in the cell.
8. Unit of inheritance present on the chromosomes.
Down
1. Green plastids.
2. Formed by collection of tissues.
4. It separates the contents of the cell from the surrounding medium.
5. Empty structure in the cytoplasm.
7. A group of cells.
Who discovered cell?
Name three important parts of cell.
In which cells, cell wall is present?
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