Across
- 4. A group of tissues that work together to carry out a specific job
- 7. The main plant organ that carries out photosynthesis
- 8. The rigid outer layer in plant cells that provides support and shape
- 9. The muscle that helps humans inhale and exhale during breathing
- 10. A group of organs that work together to perform body functions
- 11. The movement of water across a semipermeable membrane
- 12. The control centre of the cell that contains DNA
- 15. The windpipe that carries air from the mouth to the lungs
- 18. Small pores on the underside of leaves that allow gases to move in and out
- 19. An organism made up of only one cell
- 20. A group of similar cells that work together to perform a function
- 21. The plant organ that absorbs water and anchors the plant in the soil
- 22. The plant organ that supports the leaves and transports water and nutrients
- 23. A large sac in plant cells that stores water and nutrients
- 25. The process where glucose reacts with oxygen to release energy
Down
- 1. The powerhouse of the cell where energy is released from food
- 2. A thin layer that controls what enters and leaves the cell
- 3. The jelly-like substance inside a cell where reactions occur
- 5. Cells that open and close the stomata to control gas exchange
- 6. A simple cell without a nucleus, like bacteria
- 8. Organelle in plant cells where photosynthesis takes place
- 13. A complex cell with a nucleus, like plant and animal cells
- 14. A living thing made up of one or more cells
- 16. An organism made up of many cells working together
- 17. Tiny air sacs in the lungs where gas exchange occurs
- 24. The basic structural and functional unit of all living things