Flashcards in Ch. 30 Plant Reproduction Deck (22):
how did the algal ancestors of land plants disperse their eggs and sperm?
(ex. bryophyte sperm are motile and rely on water to swim and fertilize)
how are the spores (product of meiosis) in all land plants dispersed?
air and wind
what two groups of green algae are most closely related to land plants?
coleochaete and chara
what made sexual reproduction independent of water?
seeds! (gymnosperms and angiosperms)
what do all plants have in common?
1. reproduce sexually
2. produce a green body (N)
3. disperse their offspring
zygotes and spores, unicellular or multicellular?
gametophytes and sporophytes, unicellular or multicellular?
how many multicellular phases do land plants have?
how are spores produced? (mitosis or meiosis)
how are gametophytes produced? (mitosis or meiosis)
how are zygotes produced?
how are sporophytes produced?
are sporophytes diploid or haploid?
are zygotes diploid or haploid?
are spores diploid or haploid?
are gametophytes diploid or haploid?
characteristics of gametophytes (nonvascular, bryophytes, algae)
-main plant body
-reproduces sexually by producing eggs/sperm
-when sperm and eggs fuse, it gives rise to the sporophyte generation
characteristics of sporophytes (nonvascular, bryophytes, algae)
-remains attached to gametophytes, small
-has a sporangium which produces spores (haploid reproductive cells)
-once spores are dispersed and germinate, produce gametophytes
are vascular plants gametophyte or sporophyte dominant?
are non vascular plants gametophyte or sporophyte dominant?
in all land plants, the embryo is nourished by the female gametophyte (true or false)