Across: 2. Fibrous carbohydrate molecules that form cell walls of fungus, exoskeletons of arthropods, scales of fish, and beaks (mouthparts) of cephalopods (octopus) 3. Produces Spores 7. Produces Gametes 8. Material that stiffens cell walls in vascular plants 9. Embryo sporophyte packaged inside a coat 10. Carries water up the plant Down: 1. Closeable holes on the plant 2. Waxy covering secreted by plants 4. Male gametophyte in a seed plant 5. Cluster of spores producing structures on a fern leaf 6. Carries sugar down the plant.