Plant Science

2. Cell walls are composed of this chemical.
5. Plant hormone synthesized at stem tip; promotes growth.
6. This structure of the leaf allows CO2 to enter and O2 to exit
10. Fusion of male gamete (from pollen) with female gamete (in ovule).
11. A transfer of pollen grains from anther to stigma.
12. What kind of meristems to dicotyledonous plants have (one of two types)?
13. Tissue which transports products of photosynthesis out of leaf.
15. ....... mesophyll; main photosynthetic tissue hence its position near the top of the leaf to get light.
16. A plant that grows in dry areas.
17. Tissue which transports water.
18. Special pressure in terrestrial plants; the pressure against cell walls when water enters the cell and vacuoles through osmosis, creating rigidity.

1. What plant hormone causes the closing of stomata? (2 words)
3. What kind of meristems to dicotyledonous plants have? (one of two types)
4. Hormone involved in metabolic processes during germination of a starchy seed.
7. Interesting phenomen: Auxin get's carried to the part of the stem that receives less light, causing the plant to bend towards the light.
8. Chemical present in some cell walls; it hardens cell walls.
9. The loss of water vapor from the leaves and stems of plants.
14. .........mesophyll; leaf tissue; creates spaces and surfaces for the movement of water and gases.