lab 3: pt 3 - seeded vascular plants (gymnosperms + angiosperms)

how do seeded vascular plants transport sperm?

by pollen

what is this?

cycadophyta

what is the common name for cycadophyta?

cycads

what is the common name for gingkophyta?

ginko

what is the common name for pinophyta?

conifers (pine, spruce, etc.)

what is this?

gingkophyta/ginkow

what is a special trait about gingkophyta leaves?

they are shaped like spades

what is this?

pinophyta/conifers

what is an interesting trait about how pinophyta/conifers reproduce?

they have male and female pine cones called ovulet cones and staminate cones that have eggs and pollen (sperm)

what is this?

female, ovulet pinecone

what part of the ovulet pinecone contains the egg?

the base/spine of the pinecone

what is this?

male, staminate pinecone

what part of the male, staminate pinecone contains the pollen?

the pollen is found inside sacs found toward the outer portion (SCALES) of the male pinecone

what are 2 significant characteristics of male pollen grain?

1) pollen grains are UNIQUE to the type of plant they come from

2) pollen grains are shaped in a way that gives the pollen “wings” so that the wind can catch and launch/propel the pollen long distances

what are “gymnosperms?”

seed-producing, NON-FLOWERING, vascular plants

their seeds are “naked” and NOT ENCLOSED within a protective fruit

what are “angiosperms?”

the flowering plants that produce seeds enclosed within a PROTECTIVE fruit

why are magnoliophyta considered angiosperms?

they are the flowering plants that produce fruit that protects their seeds

what are the gametes in mangoliophyta called?

stamen and carpal/pistol

what is common name for magnoliophyta?

flowering plants

what is this?

the complete/whole reproductive system of a flowering plant

what is the male gamteophyte called?

stamen

what is the female gamteophyte called?

carpal/pistol

what are the role of the sepals?

protecting the reproductive organs of the flower until they are ready to bloom and reproduce

what is another name for the receptacle?

the stem

what are a few ways that pollen can be transported for magnoliophyta?

1) wind transporting the pollen

2) insects rubbing the pollen on their legs, then flying to transport it

3) animals rubbing their fur, then transporting the pollen

what is the dominant stage of cycadophyta/cycads?

sporophyte-dominant

what is the dominant stage of gingkophyta/ginko?

sporophyte-dominant

what is the dominant stage of pinophyta/conifers?

sporophyte-dominant

what is the dominant stage of magnoliophyta/flowering plants?

sporophyte-dominant

why can pinophyta live in drier environments?

they have strong and deep root systems that allows them to transport water further while staying protected by their bark