Chapter 27

The ______, which bears flowers, roots, stems, and leaves, dominates the life cycle of flowering plants. a. sporophyte b. gametophyte c. megaspore d. microspore

Seeds are mature ______ ; fruits are mature ______. a. ovaries; ovules b. ovules; stamens c. ovules; ovaries, mostly d. stamens; ovaries, mostly

Haploid _____ form by meiosis in a pollen sac. a. megaspores b. microspores c. seeds d. endosperm cells

Cotyledons develop as part of ______. a. endosperm b. stamens c. embryo sporophytes d. ovaries

A whole plant grows from a tissue or structure that became separated from a parent plant. This is ______. a. double fertilization b. vernalization c. vegetative propagation d. photoperiodism e. senescence

Plant hormones _____. a. interact with one another b. are influenced by environmental cues c. are active in plant embryos within seeds d. are active in adult plants e. all of the above

_____ stops lateral buds from branching out. a. Gibberellin b. Auxin c. Cytokinin d. Ethylene

In Michigan, a long-day plant will flower ______. a. in July b. in April c. all year round d. whenever the air warms up

Match the terms with the most suitable description. ______ phototropism _____ photoperiodism _____ double fertilization _____ ovule _____ carpel _____ abscission a. flowers, leaves, fruits drop from a plant in autumn b. formation of zygote and first cell of endosperm c. starts out as cell mass in ovary; may become a seed d. female floral reproductive structure e. light triggers adjusted rate and direction of growth f. change in length of daylight relative to darkness causes it