1. Plant Growth, Reproduction and Responses
Ch. 22

2. Plant Life Cycle The Alternation of Generation
(between a _______ sporophyte & a ____________ gametophyte)
The lives of all plants consist of two generations.
____________ is dominant in non-vascular plants.
____________is dominant in vascular plants.

3. The Alteration of Generation

4. Plant Life Cycle
______________= male reproductive structure in which sperm is produced.
______________ = female reproductive structure in which egg is produced.

6. Alteration of Generation (Non-vascular plant)

8. The Alteration of Generation (Vascular Seedless Plant: Fern)

10. Gymnosperm Life Cycle

11. Life Cycle of a Pine Tree

12. Life Cycle of Angiosperm

13. Flower Reproduction Flowers form 2 types of gametes: 1) ____________
- male gamete
- contain 2 sperm cells + 1 tube cell
2) ____________
- female gamete
- contain 8-celled embryo sac=
5 haploid cells+1 egg cell (n)+1 polar nuclei (2n)

14. Steps of Fertilization
1)_______ grain lands on _________, tube cell forms a tube down to the ________.
2)One ________ cell (n) fertilizes the _______ (n) and form the ________ (2n)
3)The other sperm cell (n) fertilizes the _______ ________ (2n) and form the __________ (3n) which supplies nutrients for the embryo
= ________________________
4) Flower withers and ________ ripens into fruit

15. Plant Hormones
______ – the growth-promoting hormone that causes stem to bend towards the ________; accumulates on the ____ side allowing the dark side to elongate more.
______ _______ – inhibition of the growth of buds along a stem

16. Plant hormones
__________ – produced in developing _____ and _____; stimulate _____ elongation, _____ development, and _____ germination

18. Plant hormones
_________ – produced in ____ ____; stimulate ___ ______ and slow the aging of some plant organs; sprayed on cut flowers to keep them fresh
w/o & w/ cytokinin ->

19. Tropism - a response in which a plant grows either
towards or away from a ________.
______tropism

20. Photo-Periodism
- the response of a plant to the length of days and nights; determines when ___________________on specific plants
- the length of ______ controls _______________.
- ____ ___ plant (spring/summer) vs. _____ ____ plant (fall/winter)