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The way in which the alternation of generations occurs in plants depends on the type of plant. In bryophytes (mosses and liverworts), the dominant generation is haploid, so that the gametophyte comprises what we think of as the main plant. The opposite is true for tracheophytes (vascular plants), in which the diploid generation is dominant and the sporophyte comprises the main plant.
Pteridophytes are more advanced than Bryophytes due to the following reasons: a) Plant body is well developed into root, stem and leaves. b) Pteridophytes possess vascular tissues: xylem and phloem.
Fern life cycle differs from that of a moss: much greater development, independence, and dominance of the fern's sporophyte. Sporophytes have rhizomes. Fronds (leaf-like structures) develop at the tip of the rhizome as tightly rolled-up coils (fiddleheads)--they unroll and expand.
INTRODUCTION THIS ESSAY is an attempt to reconstruct a picture of the flora of the Wealden 'delta' and its hinterland. It is aimed at the geologist who has no specialist knowledge of the Wealden and little or no knowledge of Wealden plants and spores. I fit the facts I know, and the literature I cite, into a picture of a delta complex occupying the area of the Weald of south-east England. In.
Nov 19, 2013 - Cards and Charts to help children learn about the Plant Kingdom. See more ideas about Montessori science, Montessori classroom and Cards.
The dominant generation is saprophytic. Have true roots. Club mosses, ferns, horsetail Gymnosperms These are seed producing plants and seeds develop to form cones. They produce unisexual flowers. pines, ephedra, juniper, fir, redwood Angiosperms These are seed producing plants and are known as flowering plants. They show derived characteristics and produce flowers, endosperms, and fruits.
Biology 107 - Final Exam. STUDY. Flashcards. Learn. Write. Spell. Test. PLAY. Match. Gravity. Created by. annasouthworth1. Material for the last ever exam in this course. First 12 Q - Cladistics Next 25 - History of Life on Earth Next 8-9 Q - Bacteria 6 Q - Protists 6-7 Q - Plants Next Q - Ecology. Terms in this set (239) Many microbiologists have divided the two prokaryotic domains into.