Ch 22

Question 1

Seed

Answer 1

borne in a cone not a fruit; nourishment of the embryo, dispersal to a new location, and dormancy during unfavorable conditions

Question 2

Seed coat

Answer 2

the protective layer on a seed; the seed coat develops from one or both integuments

Question 3

Embryo

Answer 3

protect zygote (egg+sperm)

Question 4

Food reserves

Answer 4

nourishment

Question 5

Seedling

Answer 5

.

Question 6

Mature Sporophyte

Answer 6

.

Question 7

Pollen cone (male strobilus)

Answer 7

simple cone with a single short unbranched axis that bears microsporophylls

Question 8

Microsporangium

Answer 8

.

Question 9

Microspore

Answer 9

.

Question 10

Pollen grain (male gametophyte)

Answer 10

shed from the tree as pollen and carried in the wind

Question 11

Sperm

Answer 11

pollen tube delivers the sperm cells to the archegonia; sperm cells motile

Question 12

Ovulate cone (female strobilus)

Answer 12

.

Question 13

Ovule

Answer 13

.

Question 14

Megasporangium

Answer 14

inside each megasporangium is a single large megaspore mother cell that undergoes meiosis which results in one surviving megaspore and 3 that die

Question 15

Megaspore

Answer 15

retained inside the megasporangium and grows into a large multinucleate megagametophyte

Question 16

Female gametophyte with archegonium

Answer 16

.

Question 17

Egg

Answer 17

gigantic cells loaded with carbohydrate and protein; egg nucleus is haploid and large (swollen)