Across
- 2. tiny pores underside the leaves
- 4. White, green, or brow patches of thread like growth
- 5. The bacteria that can convert atmospheric nitrogen into nitrates
- 7. the liquid used for testing starch
Down
- 1. The substance that absorbs carbon dioxide
- 2. mutual benefit relationship among different organisms
- 3. cells that control the opening and closing of stomata
- 6. The by-product of photosynthesis