Flashcards in Seed Plants Deck (68):
What advantages do seeds offer?
Can withstand desiccation
Can travel further
Embryo and food supply surrounded by a protective coat
Are seeds multicellular or unicellular?
What super group are Seedless plants in?
What two things are key adaptations for life on land?
In addition to seeds what are the 4 things common to all seed plants?
Reduced gametophytes (inside sporo)
Look of gametophytes of seedless vascular plants?
Visible to the naked eye
Look of gametophytes of seed plants
Produce 2 kinds of spores
Structure consisting of male gametophyte enclosed within a pollen wall
Megaspore or female structure
Male sperm that doesn't need water use wind or pollenator
What two sister classes so seed plants form?
Gymnosperm/Naked Seeds (4 facts)
Seeds with nothing surrounding them
Usually have cones like pine trees
Use wind to reproduce
Typically on cones
When did gymnosperms originate?
About 305 MYA
What allowed gymnosperms to become the most dominant plant of the Mesozoic era? (2 things)
The tough armor
What are the 4 phylums of gymnosperms?
Phylum Gnetoohyta (2 examples)
Linked by DNA
-Welswitschia-largest leaves live in desert
-Ephedra-produce Ephedrine also called Mornon tea, used as decongestant
What are the advantages of seeds? (3 things)
Dormant for long time
Supply of stored food
Endangered in China
Male and female seeds
Female produce fleshy seeds that stink
Ginko biloba is only surviving member of this phylum
Deciduous fan blade leaf
Palm like leaves
Not common today
Phylum Coniferophyta (6 examples)
Largest group alive today
Large trees like cypress
Conifers-keep leaves all year
What are angiosperms commonly know as?
What 2 things do angiosperms include?
Angiosperms (1 example)
Cause hay fever
Shed in millions
Wind carries them
-Rafflesia which attracts flies as their pollinator
What influences the evolution of plants and vice versa?
Do a small or large portion of angiosperms fertilize through wind?
What are the 4 modified leaves on a flower?
Angiosperm structure specialized for sexual reproduction
At base usually green and enclose flower
Interior to sepals, brightly colored and help attract pollinators
Produce micro spores that have male gametophytes
Produce megastores that have female gametophytes
Mature ovary but can include other flower parts
What two things can plants either be?
Fruits protect _____ and aid in their ______.
Examples of fruits
How do various fruit adaptations help to disperse seeds?
Cling to animals fur and humans
Wings help them fly through sky
Fruit that can stick to clothes
Type of angiosperm
Civet eats coffee seeds
Transfer or pollen from an anther of a flower on one plant to the stigma
Why do most flowers have mechanisms to ensure cross pollination?
So they won't interbreed
How many living species so angiosperms comprise?
Previously what two groups were angiosperms divided into?
DNA studies suggest that monocots form a.... but dicots are....
What Phylum also has the name The Abominable Phylum?
Who coined the phrase the Abominable phylum?
What does Phylum Anthophyta refer to? What 4 things?
When did Angiosperm of Phylum Anthophyta originate?
1/4 of angiosperms
One cotyledon inside their seeds
First and tiny leaf
Eudicots (3 facts)
2/3 of angiosperms
2 cotyledons inside their seeds
How do chemoheterotrophic plants acquire energy?
Have to ingest energy source and carbon source
4 Examples of chemoheterotrophic plants?
2. Ghost/Indian pipe
-Both are parasitic trees in Ohio
-Both are parasitic and steal carbon from host
Are carnivorous plants photo autotrophs?
Yes an example is the Venus flu trap which eat insects because they live in low nitrogen environments
Where do most of our food come from?
Name the common foods that come from angiosperms.
90% of calories ate by humans
How much corn is fed to livestock?
38% of US corn
What else do we depend on plants for?
Raw materials for construction
GMO (5 facts)
1. Double edges sword
2. We have altered there genomes
3. May become invincible (canola)
4. Organisms we don't want to kill May be killed (butterflies)
5. Modified crops aren't tested or regulated adequately
Get energy from sunlight and carbon
Get energy from taking in organic compound like silver and carbon dioxide
Get energy from sun and absorb carbon compound
What are flowering plants commonly known as?
What does the word angiosperm refer to?
Seeds contained in fruits
In angiosperms the flower of the sporophyte is composed of what?
And what's the catch?
Male and female structures
Reproductive structures are separated
Is double fertilization unique to angiosperms or gymnosperms?