Gymnosperms

Gymnosperms

________ have naked or exposed seeds.

Cones

________ have a fleshy outer covering.

Egg develops

________ and is fertilized in the gametophyte.

Meiosis

________ produces megaspores​ which forms the female gametophyte.

male gametophyte

The ________ is pollen which has non motile sperm inside, eliminating the need for water.

Describe the male gametophyte in gymnosperms

It is pollen which has non motile sperm inside, eliminating the need for water

What are 3 advantages of seeds

Protect and nourish the embryo, Can remain dormant for a long time, Dispersal through wind, water, and animals

What are the 5 requirements for seed formation?

Development of an ovule from the sporophyte​, Meiosis produces megaspores​ which forms the female gametophyte, Egg develops and is fertilized in the gametophyte, Embryo produced by zygote​, Testa produced by integument of the gametophyte, nourishes the zygote​

What characterizes gymnosperm seeds?

They are naked or exposed

List 6 traits of conifers

Can be shrubs or trees, Needle-like or scaley leaves, Found in cold and dry environments, Seed cones, Monoecious, Lack vessel elements in their xylem

Do conifers undergo secondary growth?

Yes

List 4 traits of cycads

Similar in appearance to palm trees, Seed cones, Flagellated sperm, Dioecious

List 5 traits of gnetophytes

Xylem has vessel elements, Can be trees, shrubs, or vines, Seed cones, Dioecious, Non-flagellated sperm

List 4 traits of ginkgos

Only one surviving species, Only cultivated, Dioecious, Cones have a fleshy outer covering