Across
- 6. a group of stars having a recognisable shape
- 7. jelly like substance in which cell organelles are embedded
- 8. pure form of coal used in manufacture of steel
- 9. a fossil fuel made by bodies of sea organisms
- 10. second planet of our solar system
Down
- 1. cell with no fixed shape
- 2. control center of the cell
- 3. organelle present in only plant cell
- 4. a constituent of petroleum used in generators
- 5. another name of orion constellation