Gymnosperms

Question 1

are seed plants a clade

Answer 1

YES

Question 2

what is associated with the angiosperm life cycle

Answer 2

Double fertilization

Question 3

gymnosperm representable species

Answer 3

pine

Question 4

ovule has three parts

Answer 4

1. integuments
2. megaspore
3. megaporangium

Question 5

what happens in the ovule

Answer 5

1. fertilization

Question 6

what key features of gymnosperms allowed them to thrive on land

Answer 6

1. pollen
2. cuticles

Question 7

gymnosperm means

Answer 7

naked seed

Question 8

describe the placement of gymnosperm seeds

Answer 8

exposed on sporophylls that form a cone

Question 9

sporophylls are ____

Answer 9

leaves with attached sporangium

Question 10

gymnosperm cones are (male, female or both)

Answer 10

either male or female

Question 11

angiosperm seeds are

Answer 11

covered in fruits

Question 12

fruits in angiosperms are the ____

Answer 12

mature ovaries

Question 13

what gametangia is NO LONGER found in gymnosperms

Answer 13

antheridia

Question 14

is the archegonia found in gymnosperms

Answer 14

YES

Question 15

the gametophyte in seed plants is ______(micro or macro)

Answer 15

microscopic

Question 16

what is the dominant stage in seed plants

Answer 16

sporophyte

Question 17

is the gametophyte dependent on the sporophyte in seed plants

Answer 17

yes

Question 18

pro gymnosperms

Answer 18

before gymnosperms (have some of the adaptions of seed plants but not all)

Question 19

example of progymnosperm

Answer 19

archaeopteris

Question 20

archaeopteris characteristics

Answer 20

1. no seeds
2. spores
3. fern-like leaves
4. secondary growth (wood)

Question 21

what NOW dominants terrestrial ecosystems, angiosperms or gymnosperms and was it ALWAYS like this

Answer 21

angiosperms now dominant, but it was NOT always the case

Question 22

4 phyla of gymnosperms

Answer 22

1. Phylum Ginkgophyta
2. Phylum Cycadophyta
3. Phylum Gnetophyta
4. Phylum Coniferophyta

Question 23

what phyla is this

Answer 23

Phylum Cycadophyta

Question 24

main traits of Phylum Cycadophyta

Answer 24

1. flagellated sperm
2. large cones and palm-like leaves

Question 25

what phylum is this

Answer 25

Phylum Ginkgophyta

Question 26

main traits of Phylum Ginkgophyta

Answer 26

1. flagellated sperm
2. high tolerance for air pollution
3. deciduous

Question 27

what phylum is this

Answer 27

Phylum Gnetophyta

Question 28

what phylum is a convergence with Anthophyta

Answer 28

Gnetophyta (Gnetum)

Question 29

main traits of Welwitschia (Gnetophyta)

Answer 29

1. desert plant
2. leaves among the largest of all plants

Question 30

what phylum is this

Answer 30

Phylum Coniferophyta

Question 31

largest of the gymnosperm phyla

Answer 31

coniferophyta

Question 32

three key features of the gymnosperm life cycle

Answer 32

1. dominance of the sporophyte
2. development of seeds from fertilized ovules
3. transfer of sperm to ovules by pollen

Question 33

sporophyte in the pine life cycle

Answer 33

pine tree

Question 34

where are sporangia produced

Answer 34

in male and female cones

Question 35

small cones produce

Answer 35

microspores called pollen grains

Question 36

where are male gametophytes found

Answer 36

in the pollen grains

Question 37

larger cones contain

Answer 37

ovules

Question 38

ovules produce ____

Answer 38

megaspores that develop into female gametophytes

Question 39

a female cone has two parts to its strobila

Answer 39

1. scale (has ovule and sporophyll)
2. bract (has no sporophyll)

Question 40

what are pine seeds made up of

Answer 40

three-generations

Question 41

what generations are pine seeds made from

Answer 41

1. diploid sporophyte (new generation)
2. food (megaspore)
3. seed-coat (parent generation)