Chapter 30 Seeded Plants

Question 1

Seed

Answer 1

Consists of an embryo and its food supply

Question 2

integument

Answer 2

envelops and protects the megasporangium

Question 3

ovule

Answer 3

consists of the megasporangium, megaspore and their integuments

Question 4

pollen grain

Answer 4

what a microspore develops into; consists of a male gametophyte enclosed within the pollen wall

Question 5

pollination

Answer 5

the transfer of pollen to the part of a seed plant that contains the ovules

Question 6

conifers

Answer 6

cone-bearing plants. Most gymnosperms

Question 7

flower

Answer 7

unique angiosperm structure specialized for sexual reproduction

Question 8

sepals

Answer 8

starts at the base of the flower, usually green, and enclose the flower before it opens

Question 9

petals

Answer 9

interior to sepals, aid in attracting pollination

Question 10

stamens

Answer 10

produce microspores that develop into pollen grains containing male gametophytes

Question 11

filament

Answer 11

stalk of the stamen

Question 12

anther

Answer 12

terminal sac of the stamen where pollen is produced

Question 13

carpels

Answer 13

make megaspores and their products, female gametophytes

Question 14

stigma

Answer 14

at the tip of the carpel, sticky, receives pollen

Question 15

style

Answer 15

leads from the stigma to the ovary at the base of the carpel

Question 16

ovary

Answer 16

contains one or more ovules

Question 17

complete flowers

Answer 17

have all four organs; stamen, carpel, sepal, and petal

Question 18

incomplete flowers

Answer 18

lack one or more of the four organs

Question 19

fruit

Answer 19

what a mature ovary develops into after fertilization

Question 20

embryo sac

Answer 20

contained inside every ovule; female gametophyte

Question 21

cross-pollination

Answer 21

in angiosperms, the transfer of pollen from an anther of a flower on one plant to the stigma of a flower on another plant of the same species

Question 22

micropyle

Answer 22

pore in the integuments of the ovule

Question 23

double fertilization

Answer 23

one fertilization event produces a zygote and the other produces a triploid cell; unique to angiosperms

Question 24

cotyledons

Answer 24

a sporophyte embryo with a rudimentary root and one or two seed leaves

Question 25

endosperm

Answer 25

what the triploid central cell of the female gametophyte turns into; rick in starch and other food reserves that nourish the developing embryo

Question 26

monocots

Answer 26

species of angiosperms with one cotyledon

Question 27

dicots

Answer 27

species of angiosperms with two cotyledon

Question 28

eudicots

Answer 28

what the vast majority of dicots are now classified as

Question 29

basal angiosperms

Answer 29

3 of the 4 lineages of the former dicots; appear to contain the flowering plants belonging to the oldest lineages

Question 30

magnoliids

Answer 30

the 4th lineage of the former dicots; evolved later