Plant Quiz Flashcards
What does an archegonium contain?
Egg (female gamete)
Name the haploid and diploid phases of the plant life cycle
Haploid = gametophyte Diploid = sporophyte
What does an antheridium contain?
Antherizoida (male gametes)
The alternation of generation in liverworts may be described as isomorphic or heterotrophic?
Heterotrophic
What is sphagnum and why is it important?
Moss; ecology: stores water, makes peat-bogs
What structure in the fern sporangium may be said to promote spore dispersal?
Annulus
What structure in the horsetail sporangium may be said to promote spore dispersal?
Walters
Name two important lineages that comprise coal measures
Lycopods
Horsetails
Ferns
Seed-ferns
What is heterospory?
Spores of two sizes: small male, large female
What is endosporic development?
Germination of spore inside the spore wall
What tissue nourishes the developing embryo in the gymnosperm?
Female gametophyte
Name three synapamorphies of the angiosperms?
Double fertilisation Carpel/ovary Tectate pollen exine Vessel elements Phloem companion cells
What is the functional significance of the angiosperm pollen tectum?
Provides additional protection to micro gametophyte; encloses chemicals active in controlling self- and cross- incompatibility
What is the reproductive process that defines an angiosperm and name it’s two products?
Double fertilisation
Zygote
Endosperm
What is believed to be the homologue of the angiosperm outer integument?
Seed-fern cupule
