Chapter 27 - Plant Reproduction And Development Flashcards
A flower’s ___________ has one or more ovaries in which eggs develop, fertilization occurs, and seeds mature.
a. pollen sac
b. carpel
c. receptacle
d. sepal
b. carpel
Name one reward that a pollinator may receive in return for a visit to a flower of a coevolved plant.
Nectar, pollen, oils, sex
Meiosis of cells in pollen sacs forms haploid __________.
a. megaspores
b. microspore
c. stamens
d. sporophytes
b. microspores
Meiosis in an ovule produces __________ megaspores.
a. two
b. four
c. six
d. eight
b. four
Seeds are mature __________; fruits are mature _____________.
a. ovaries; ovules
b. ovules; stamens
c. ovules; ovaries
d. stamens; ovaries
c. ovules; ovaries
The seed coat forms from the ___________.
a. integuments
b. coleoptile
c. endosperm
d. sepals
a. integuments
A new plant forms from a stem that broke off of the parent plant. This is an example of ____________.
a. parthenogenesis
b. exocytosis
c. vegetative reproduction
d. nodal growth
c. vegetative reproduction
Cotyledons develop as part of ___________.
a. carpels
b. accessory fruits
c. embryo sporophytes
d. petioles
c. embryo sporophytes
Plant hormones ____________.
a. may have multiple effects
b. are active in developing plant embryos
c. are active in adult plants
d. all of the above
d. all of the above
________ is the stimulus for phototropism.
a. Red light
b. Far-red light
c. Green light
d. Blue light
d. Blue light
Sunlight resets biological clocks in plants by activating and inactivating ___________.
a. phototropins
b. phytochromes
c. photoperiodisms
d. far-red light
b. phytochromes
Solar tracking is similar to __________.
a. phototropism
b. gravitropism
c. photoperiodism
d. thigmotropism
a. phototropism
In some plants, flowering is a _______ response.
a. phototropic
b. gravitropic
c. photoperiodic
d. thigmotropic
c. photoperiodic
Match the observation with the hormone.
\_\_\_ ethylene \_\_\_ cytokinin \_\_\_ auxin \_\_\_ gibberellin \_\_\_ abscisic acid
a. Your cabbage plant bolt (they form elongated flowering stocks).
b. The philodendron in your room is leaning toward the window.
c. The last of your apples is getting really mushy.
d. The seeds of your roommate’s marijuana plant do not germinate no matter what he does to them.
e. Lateral buds on your Ficus plant are sprouting branch shoots.
Match the observation with the hormone.
(c) ethylene
(e) cytokinin
(b) auxin
(a) gibberellin
(d) abscisic acid
a. Your cabbage plant bolt (they form elongated flowering stocks).
b. The philodendron in your room is leaning toward the window.
c. The last of your apples is getting really mushy.
d. The seeds of your roommate’s marijuana plant do not germinate no matter what he does to them.
e. Lateral buds on your Ficus plant are sprouting branch shoots.
Match the terms with the most suitable description.
\_\_\_ ovule \_\_\_ receptacle \_\_\_ double fertilization \_\_\_ anther \_\_\_ carpel \_\_\_ mature female gametophyte \_\_\_ mature male gametophyte
a. pollen tube together with its contents
b. embryo sac of seven cells, one with two nuclei
c. starts out as cell mass in ovary; May become seed
d. stigma, style, and ovary
e. pollen sacs inside
f. base of floral shoot
g. formation of zygote and first cell of endosperm
Match the terms with the most suitable description.
(c) ovule
(f) receptacle
(g) double fertilization
(e) anther
(d) carpel
(b) mature female gametophyte
(a) mature male gametophyte
a. pollen tube together with its contents
b. embryo sac of seven cells, one with two nuclei
c. starts out as cell mass in ovary; May become seed
d. stigma, style, and ovary
e. pollen sacs inside
f. base of floral shoot
g. formation of zygote and first cell of endosperm
