Ch 29/30 Flashcards
Charophycean that are ancestors to land plants
Algae
Most privatize land plants
Evolved __ mya
Bryophytes
475
Ex of nonvascular plant
Hornwort
Vascular plants that produce naked seeds
Gymnosperms
Plants undergo alternation of generations in which ___
The sporophyte generation alternates with the gametophyte generation
Key difference between alternation of generations in plants and sexual reproduction in non plant organisms
In plants the haploid and diploid stages are both multicellular
Prevents plants from drying out and protects them from microbes
Cuticle
Not a clade of vascular plants
Bryophyte
When you see a green leafy true moss you are looking at the
Gametophyte generation
How are gametes produced in plants
By mitosis of gametophyte cells
Structures that allow plants to readily take up carbon dioxide from the atmosphere
Stomata
Gymnosperms and Angiosperms do not have what in common
Ovaries
Gymnosperm phyla that thrived during age of dinosaurs and have large cones and fern like leave
Cycadophyta
Significant change during Carboniferous and Permian that contributed to succes of gymnosperms
The climate became drier
Land plant that has flagellated sperm and a sporophyte dominated life cycle
Fern
Which of the following characteristics of plants is absent in their closest living relatives
Alternation of generations
Which of the following characterizes eudicots
Two cotyledons. Branched netlike veins. Taproot usually present.
Largest phylum of gymnosperms
Coniferophyta
Vascular plants with flowers and protected seeds
Anthophyta
90% of extant plant species
Angiosperms
Not a phylum of nonvascular plants
Lycophyta
The first seed plants evolved ___ mya
The closest living relatives to the extinct seed plants are the extant ____
360
Pterophytes
Dominant plants during the Carboniferous and their death formed vast coal deposits that humans utilize today
Seedless vascular plants
Multicellular gametangia
Enclose and protect egg cells
