Plant evolution
Seeds and pollen are adaptations that allow reproduction in what conditions?
The absence of water
What are gymnosperms?
Characterized by "naked seeds".
What are the 2 reproductive structures.
Flowers and fruit
True or False
Seeds can stay dormant
True
Male gametophytes develop in the ___ and female gametophytes develop in the ____
Pollen grains, ovule
This phyla only has one loving species. What is the phyla and the name of the species?
Ginkophyte, ginkgo blioba
monocots have __ cotyledon and dicots have ___ cotyledon
one, two
What is angiosperm diversity due to?
interactions with animals
How many phyla are in gymnosperms, and how many in angiosperms?
4,1
Are gymnosperms vascular or non-vascular?
Vascular
What is the largest difference between gymnosperms and angiosperms?
Gymnosperms produce naked seeds not covered by a fruit.
How do flowers entice pollinators? Have flowers and pollinators evolved together or separately?
nectar and pollen, coevolution (together)
Why did gymnosperms and angiosperms evolve flowers and fruit?
To increase reproductive fitness.
True or False
A pinecone is an example of a gymnosperm.
True
Angiosperms developed a unique reproductive organ known as...
Flowers
Why did natural selection favor long styles and filaments?
it increases
likelihood of pollination—
either making them more
accessible to insects, or to
catch the wind.
Megagametophytes produce megasporophytes through ___
Mitosis
Name two gymnosperm phyla.
Pinophyta, Cycadophyta, Gnetophyta, and Ginkgophyta.
What is more prominent in angiosperms: the sporophyte or gametophyte?
The sporophyte
Name the 5 important things that seed plants do for human life
1. produce O2 and remove CO2 from the atmosphere
2. Contribute to soil formation and fertility
3. Roots hold soil and prevent erosion
4. Moderate local climates - humidity
5. Provide shade/block wind