Plants

2. class of plant growth substances that promote cell division
3. an inflorescence consisting of a main axis bearing single flowers alternately or spirally on stalks of approximately equal length
6. the green pigment of plant cells necessary for photosynthesis
10. refers to a leaf lacking petiole or to a flower lacking a pedicel
11. food-containing tissue
13. the amount of water vapor actually present in the air at a given temperature compared to the maximum amount the air could hold at that certain temperature
14. a spike of flowers on a swollen, fleshy axis, usually surrounded by a colorful bract

1. a complex vascular tissue through which most of the water and minerals of a plant are conducted
4. also called the aging hormone, it assists in aging flowers and foliage
5. the broad, flattened part of a leaf
7. a solitary flower on a leafless peduncle or scape
8. a silver compound readily taken up into the flower
9. an intracellular process in which food is oxidized with the release of energy, the complete breakdown of sugar or other organic compounds to carbon dioxide and water
12. the aging process resulting in wilting and death of a cut flower, foliage, or plant