Chapter 29

___________ is the arrival of pollen on a receptive stigma.

An animal pollinator may receive _________ when it visits a flower of a coevolved plant (choose all that apply). a. pollen b. nectar c. pesticides d. fruit

In flowers, a __________ contains one or more ovaries. a. pollen sac b. carpel c. receptacle d. sepal

In flowers, the structures that produce male and female gametophytes are called ___________ and ____________. a. pollen grains; flowers b. stamens; carpels c. anthers; stigma d. megaspores; microspores

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

True or false? All flowers are pollinated by bees.

The three main parts of a mature seed are ______________. a. pollen grain, egg, and seed coat b. embryo, endosperm, and seed coat c. megaspores, microspores, and ovule

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

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

Cotyledons develop as part of ______________. a. carpels b. accessory fruits c. embryo sporophytes d. flowers

Exposure to _________ can trigger seed germination. a. light b. cold c. smoke d. all can be triggers

A new plant forms from a stem that broke off of the parent plant. This is an example of ______________. a. nodal cloning b. exocytosis c. asexual reproduction d. tissue culture propagation

Banana plants produce seedless fruit because they are ___________. a. triploid b. monocots c. propagated by grafting d. treated with colchicine

Match the terms with the most suitable description. _____ovule _____receptacle _____double fertilization _____anther _____plumule _____mature female gametophyte _____mature male gametophyte a. pollen tube together with its contents b. consists of seven cells, one with two nuclei c. after fertilization, develops into a seed d. embryonic shoot e. pollen sacs inside f. swollen stem; base of flower g. formation of zygote and first cell of endosperm