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.
Where are chromosomes found in a cell? State their function.
Chromosomes are found in the nucleolus. Their function is to carry genes and help in inheritance or transfer of characters from the parents to the offspring.
Explain why chloroplasts are found only in plant cells?
Chloroplasts are only found in plant cells because they are required for the food making process of plants called photosynthesis. The chloroplasts contain chlorophyll which traps solar energy and utilize it for making food. Since animals do not synthesize food they do not have chlorophyll.
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