Across
- 4. softer part of the wood between the inner bark and the heartwood
- 5. older, nonliving central wood of a tree or woody plant
- 6. parenchyma, usually containing chlorophyll
- 7. of various hormones or similar substances that promote and regulate the growth and development of plants
- 8. soft, spongy central cylinder of parenchymatous tissue in the stems of dicotyledonous plants
- 9. conduction of soluble food material from one part of a plant to another
- 10. develop into a plant or individual, as a seed, spore, or bulb
Down
- 1. slender stalk by which a leaf is attached to the stem; leafstalk
- 2. called phytohormone. any of various plant compounds
- 3. passage of water through a plant from the roots through the vascular system to the atmosphere