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1. What parts of a fern are diploid?
2. In ferns, where does the switch from diploid to haploid occur?
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- 2.There are 10 flowers in plant of crotalaria, in each microsporangium there are 30 microspore mother cells,how many pollen grains are formed from that plant(A) 4,000 (B) 10,000(C) 24000 (D) 48,000How does a haplontic plant population maintain genetic diversity? Zygotes are produced by random fusion Gametes are created through meiosis Diploid spores undergo independent assortment during mitosis The zygote undergoes meiosis to generate a haploid sporophyte.Which of the following traits characterizes gym nosperms? The plants carry exposed seeds on modified leaves Reproductive structures are located in a flower After fertilization, the ovary thickens and forms a fruit The gametophyte is the longest phase of the life cycle.
- In plants, the adult diploid individuals are called: a. spores. b. sporophytes. c. gametes. d. gametophytes. e. zygotes.Which of the following is not an evolutionary trend among plants? a. developing vascular tissues b. becoming seedless c. having a dominant diploid generation d. producing nonmotile gametes e. producing two types of sporesWhat is the ploidy of the following structures gametophyte, seed, spore, sporophyte? 1n, 1n, 2n, 2n 1n, 2n, 1n, 2n 2n, 1n, 2n, 1n 2n, 2n, 1n, 1n
- In addition to having simple vascular tissue, seedless vascular plants differ from all bryophytes in that: a. they do not require free water for fertilization. b. the sporophyte generation is dominant. c. most do not require a moist, humid, or shaded habitat. d. the group is much more diverse, with many more speciesoverall. e. most have a feathery or flattened thallus.Which is the correct matching of phylum and plant group? a. Hepatophyta: liverworts b. Anthocerophyta: mosses c. Bryophyta: horsetails d. Lycophyta: ferns e. Monilophyta: hornwortsThe land plants are probably descendants of which of these groups? green algae red algae brown algae d. angiosperms
- Describe the difference between homospory and heterospory, and explain how heterospory paved the way for other reproductive adaptations in land plants.7. How does a haplontic plant population maintain genetic diversity?a.Zygotes are produced by random fusion.b.Gametes are created through meiosis.c.Diploid spores undergo independent assortment during mitosis.d.T h e zygote undergoes meiosis to generate a haploid sporophyte.8. What characteristic of Charales would enable them to survive a dry spell?a.sperm with flagella b.phragmoplasts c.sporopollenin d.chlorophylla7. How does a haplontic plant population maintain genetic diversity?a.Zygotes are produced by random fusion.b.Gametes are created through meiosis.c.Diploid spores undergo independent assortment during mitosis.d.T h e zygote undergoes meiosis to generate a haploid sporophyte.