Chapter 28

The _______ of a flower contains one or more ovaries in which eggs develop, fertilization occurs, and seeds mature. a. pollen sac b. carpel c. receptacle d. sepal

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

Meiosis of cells in pollen sacs forms haploid _______ a. megaspores b. microspores c. stamens d. sporophytes

cotyledons develop as part of _________ a. carpels b. accessory fruits c. embryo sporophytes d. petioles

The seed coat forms from the _________ a. integuments b. coleoptile c. endosperm d. sepals

A new plant forms from a stem that broke off of the parent plant and fell to the ground. This is an example of _______. a. parthenogenesis b. exocytosis c. vegetative reproduction d. nodal growth

Plant hormones _______ a. may have multiple effects 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

In some plants, flowering is a _______ response. a. phototropic b. gravitropic c. photoperiodic d. thigmotropic

Name one reward that a pollinator may receive in return for a visit to a flower of its coevolved plant partner.

Which of the following statements is false? a. Auxins and gibberellins promote stem elongation. b. Cytokinins promote cell division, retard leaf aging. c. Abscisic acid promotes water loss and dormancy. d. Ethylene promotes fruit ripening and abscission.