seedless vascular plants rPlant22 lung the Seedless Vascular Plants 1 Complete t
ID: 148819 • Letter: S
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seedless vascular plants
rPlant22 lung the Seedless Vascular Plants 1 Complete the following table REVIE Example organisms Support system Anchoring structures Transport system Type of transport tissue External structures Reproduction 2 Which of the following characteristics are representative of seedless vascular plants? (Circle the correct answer.) a. The sporophyte generation is dominant, and they have specialized tissues for conducting water and nutrients throughout the plant. b. They have true roots, stems, and leaves, and reproduce by means of spores. c. They have waxy cuticles (for protection against desiccation) and stomata (for gas exchange) d. Both a and b. e. All of the above. 3 Sketch and label the following structures of Equisetum sp: mature sporophyte (2n), strobilus, node, ribbed stem, leaf sheath, and rhizome. 4 Distinguish between the sporophyte and the gametophyte generation in seedless vascular plants, making sure to discuss structures and ploidy 151 22 The Green Machine Understanding the Seedtiess Vascuar PlExplanation / Answer
4. Sporophyte -Diploid
Produces spores by meiosis to produce gametophytes.
Gametophyte - Haploid
Produces gametes by mitosis to produce spores.
5. Bryophyta are seedless non vascular plants. They are not classified under phylum of seedless vascular plants.
6.
7. Selaginella species -
Leaves have ligule or tongue on upper surface.
Heterosporous, both microspores and microspores.
Known as spike moss.
Simple scale like leaves on branching stems from which roots arise.
Lycopodium species -
Homosporous.
Have strobili.
Known as ground pine.
They have rhizomes that branch horizontally, producing aerial stems and underground roots.
8. Abrasive. The stems are rough and durable due to high silica content so they are used to scrub pots and pans in pioneer days.
9. Antheridium.
Archegonium. FertilizationDeveloping sporophyte Mature sporophyte Sporangia Meiosis Spores Spore germination Gametophyte Antheridium....
Archegonium.....
10. Large trees covered with bark and huge ferns grew in the middle carboniferous swamps. The plants gave off so much oxygen that the air had much more oxygen in it. This allowed plants and animals to reach sizes that are not known in today's atmosphere. When the huge trees and ferns died , they fell into waters that didn't have bacteria to help them decompose. These plants formed peat beads. Eventually these peat beads turned to coal.
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