Across
- 2. Pores on the underside of a leaf
- 3. The P-value we always use in biology
- 4. Statistical test used to compare the difference of mean values.
- 7. Rate of diffusion = (surface area x concentration gradient)/distance
- 9. Statistical test used to compare frequencies
- 11. The principle given to describe the flow of blood and water in gills
- 12. Statistical test used to assess association/ correlation
- 15. This is the volume of air in one breath
Down
- 1. This is the site of gas exchange in fish
- 3. Tissue in leaf where the most photosynthesis occurs
- 5. As volume increases, this always decreases
- 6. This muscle contracts and flattens when you inhale.
- 8. Opening on an insect that allow gases to enter and leave
- 10. This is the site of gas exchange in animals.
- 13. Impermeable substance that an insect's exoskeleton is made from
- 14. The type of hypothesis that states there is no difference in variables