Life Science Chapter 9 Review

2. stage of a fern life cycle which involves a zygote being formed
3. responsible for carrying the pollen grains to female cones in gymnosperm reproduction
5. part of flower which helps attract pollinators
9. hormone which inhibits other plant hormones
10. affected by light
12. the female part of the flower
14. process which occurs if the conditions are correct; happens after the gymnosperm cones release the seeds into the air
15. cause plant cells to grow in size, divide, or stop growing
16. type of tropism involved when a plant grows toward a stimulus
18. sticky part at the top of the carpel which receives the pollen
19. part of a flower which forms a seed
21. part of the stamen which supports the anthers
22. dominant stage in ferns; spores are scattered by the wind
25. plants which flower whenever the conditions are right
26. formed by pollen when it lands on stigma; used as transportation for the gametes to travel into the ovule
28. plants which don't bloom until the nights are longer than the critical night length
29. the male part of the flower
31. place in gymnosperms where the seeds and spores are produced

1. substance in plants which respond when the length of darkness is correct
4. must be involved in reproduction for nonvascular and seedless vascular plants; used by the sperm to swim to the eggs
6. plants which don't bloom until the nights are shorter than the critical night length
7. in mosses, the place where spores are produced
8. occurs when a plant grows toward an object it touches
9. repeating cycle of gametophyte and sporophyte structures
11. affected by gravity
13. type of tropism involved when a plant grows away from a stimulus
17. hormone which causes fruit to ripen
20. tube which the stigma sits upon
23. hormone which causes cells to divide
24. hormone which causes plants to grow
27. part of a flower which forms a fruit; found at the based of the style and contains ovules
30. the pollen producing section of the flower