Lecture 14 Flashcards
Gymnosperms
Gametophytedependent on sporophyte pros?
Gametophyte is protected
Gametophytedependent on sporophyte cons?
More stress on sporophyte
Pollen (male gametophyte) pro?
Protection
Pollen con?
Needs something like air or insects to disperse it
Ovule (protected by sporophyte) pros?
Protection
Ovule cons?
Extra care for sporophyte
Seed pros?
protection, dispersal, food storage, dormancy
Seed cons?
Great energy cost
Mature trees are?
2n sporophytes
Sporophylls?
scale like leaves with sporangia
Ovule is?
Integuments+megasporangium+megaspore
Microsporangium undergo?
Meiosis
Microspore undergoes?
Mitosis
Nonseed plants require?
Water to pollinate
In seed plants, the male gametophye is?
In pollen grain
Seed is travelling stage in?
Plants with seeds
Spore is travelling stage in?
non seed plants