angiosperms and gymnosperms Flashcards
1
Q
means seed within a vessel or enclosed seed
A
angiosperms
2
Q
theory predicts that gymnosperms will be out competed everywhere except where angiosperm seedling competition is reduced, as in cold temperature regions with nutrient poor soils
A
seedling hypothesis
3
Q
who proposed seedling hypothesis as explanation of angiosperm dominance
A
william bond
4
Q
angiosperm life spans
A
- annuals
- biennials
- perennial
5
Q
own pollen fertilizes own egg
A
self pollination
6
Q
pollen of one, fertilizes egg of another
A
cross pollination
7
Q
a seed plant that produces naked seeds - not enclosed by any protective covering
A
gymnosperms
8
Q
pollen grains disseminated by wind
A
animogamic plants
9
Q
gymnosperms are classified into four groups
A
- cycads
- ginkgo
- Gnetophytes
- conifers
10
Q
seed advantages
A
- seed plants don’t depend on water to reproduce
- embryo has nourishment and protection
- seed allow for dispersal
