Seed Plants Flashcards
What is the dominant phase is all seed plants?
Sporophyte
Main spore info on seed plants:
Hint* spore sizes
They are heterosporous, two spores of different sizes.
What are the two seed spores?
Microspores, male and tiny
Megaspores, female and large
What does the microspore develop into?
Microgametophyte
What does the megaspore develop into?
Megagametophyte
Reproductive organs in seed plants can be…
On one plant or two separate plants
Plants with m and f structures
Monoecious
Plants with separate m and f plants
Dioecious
What defines Gymnosperms
Plants with exposed seeds born on cones called strobili
Plants with exposed seeds
Gymnosperms
Name the phylum and plant that has green fan like leaves
Ginkgophyta, Ginkgo biloba
Name the phylum and plant that has is dioecious and palm like leaves
Phylum Cycadophyta, Sago palm
What is a male pine cone called?
Staminate
What is the staminate comprised of?
Scales on the outside and pollen on the interior.
What is an ovulate?
A female cone
What is an ovulate compromised of?
The scale and the ovule
What are the parts of an ovule? From the outer to inner.
Integument, nucellus and then the egg
What is a group of needles called?
Fascicle
What does pine pollen look like?
Mickey Mouse but purple!
What is the venation of all monocot angiosperms?
Parallel
What venation can dicot angiosperms be?
Pinnate or palmate
What does herbaceous mean?
Doesn’t produce wood
Describe the embryo of a soy bean plant
The longer part of the embryo, the radicle becomes the roots and the shorter part, plumule becomes the above ground part of this dicot plant.
Identify Monocot
Multiples of 3
Identify dicot
Multiples of 4 or 5
Trick to identify monocot parallel venation
The veins all go one way
When the veins go to the outer part of the leave from a center stem
Pinnate
When the veins stem from one place at the base of the stem (think hand print)
Palmate,
How many species does Ginkgophyta have and what is it?
They only have one,
Ginkgo biloba
Three points about Ginkgo biloba
- doesn’t bear cones
- no longer found in the wild
- Dioecious
Three truths about Cycadophyta
- slow growing
- tropical or sub tropical
-dioecious
2 truths about Coniferophyta
Most are evergreens
Male and female cones are on the same tree.
Female at the top, male at the bottom to deter self fertilization.
Cotyledons
The seed leaves that start photosynthesis before the true leaves drop
What is unique about angiosperms?
Double fertilization.
What is double fertilization?
One sperm fused with one egg for a diploid zygote and the other sperm fused with two polar nuclei to form the Tripoli’s zygote.
