Chapter 23.3 Flashcards
What are gymnosperms?
Seed plants whose seed do not develop within a fruit, most develop within a cone
What does gymno and sperma mean?
Naked and seed
What are angiosperms?
Seed plants whose seed develop enclosed within a fruit that develop from part of a flower
What does angeion and sperma mean?
Case and seed
What are most species of seed plants?
Flowering plants
What generation is dominant (seed) and does it require water to reproduce?
Sporophyte, no
Where does a female sporophyte develop?
A ovule, a multicellular structure that is part of the sporophyte
After fertilization, where does the ovule and its contents develop?
Seed
Where does the male gametophyte of seed plants develop?
Pollen grain
What is pollination?
The transfer of pollen grains from the male reproductive structures of a plant to the female reproductive structures
What is fertilization?
The fusion of an egg and sperm
After fertilization, what is an ovule called and what does it contain?
Seed, embryo
Why do plants disperse their seeds?
Prevent competition (water, nutrients, light, living space)
How are seeds dispersed?
Wind, water, animals
What are the four groups of gymnosperms?
Conifers, cycads, ginkgoes, gnetophytes
