Seed Plants

Question 1

Describe gymnosperms

Answer 1

seeds are totally expossed or borne on the scales of cones

ovary wall does not surround the ovules

Question 2

Describe angiosperms

Answer 2

flowering plants

produce seeds within a fruit (a mature ovary)

Question 3

Gymnosperms are ___plants

Answer 3

vascular

Question 4

Gymnosperms produce_____.

Answer 4

seeds

Question 5

List the 4 phyla of gymnosperms

Answer 5

coniferophyta
ginkgophyta
cycadophyta
gnetophyta

Question 6

What is the largest phylum of gymnosperms?

Answer 6

coniferophyta

Question 7

Most conifers are ____and_____

Answer 7

evergreen

monoecious

Question 8

Monoecius

Answer 8

male and female reproductive parts in separate cones on same plant

Question 9

Pinus

Answer 9

pine tree

Question 10

What stage is a pine tree?

Answer 10

sporophyte

Question 11

What stage is a pine seed in?

Answer 11

gametophyte

Question 12

A pine tree is heterosporous

Answer 12

k

Question 13

Where does a pollen tube grow from?

Answer 13

pollen grain

Question 14

What does the pollen tube grow through? To get to what?

Answer 14

megasporangium

egg

Question 15

Comon name for cyadophyta

Answer 15

cycads

Question 16

Cycads are ___or____ in appearance

Answer 16

palmlike

fernlike

Question 17

Cycads are dioecious. Meaning what?

Answer 17

male and female reproductive structures are on separate plants

Question 18

Cycads reproduce with _____and seeds in _____ structures.

Answer 18

pollen

conelike

Question 19

Give an example of a Ginkgophyta

Answer 19

Ginkgo biloba (only surviving species)

Question 20

Ginkgo biloba is a deciduous, dioecious_____

Answer 20

tree

Question 21

Female gingko produces fleshy ___directly on branches.

Answer 21

seeds

Question 22

Gnetophytes share some traits with what?

Answer 22

angiosperms

Question 23

List the three genuses of gnetophytes. Give xamples.

Answer 23

Gnetum- tropical vines, shrubs, trees with broad leaves
Ephedra- shrubs and vines that grow in deserts and other dry areas
Welwitschia- single species found in African desserts

Question 24

Ephedra plants make ephedrine. Which does what?

Answer 24

stimulates the heart and raises blood pressure

Question 25

Describe how a welwitschia looks

Answer 25

2 leaves that grow its entire life to the size of 6 1/2 feet

Question 26

After fertilization ovules become_____ and the ovary develops into____

Answer 26

seeds | fruit

Question 27

Angiosperms are the only plants to use_____ fertilization.

Answer 27

double

Question 28

What is the dominant stage in flowering plants?

Answer 28

sporophyte

Question 29

What does embryo sacs contain in fowers?

Answer 29

7 cells with 8 nuclei

Question 30

Egg cell and central cell with two polar nuclei participate in _____.

Answer 30

fertilization

Question 31

In double fertiliation 2 sperm fertilize two cells in the ____.

Answer 31

embryo sac

Question 32

What does double fertilization result in?

Answer 32

diploid zygote | triploid endosperm

Question 33

Cotyledons

Answer 33

nutritive organs in mature seeds | they absorb nutrients in endosperm