Homework Answers
*Gametophytes are haploid. They are small green shaped structure of ferns . They produce and develop female and male organs of plants
*sporophyte is diploid. It consist of well differentiated stem, leaves and roots. They are asexually structures which produces spores for reproduction.
*zygote is diploid or polyploid.zygote is formed inside archegonium or may be flaskshaped . The zygote cleaves to form embryo.
*Spores are haploid . They are spherical with two layered wall. They fuses to produce new individuals.
*Gametes are haploid cells. They posses 2 sperm cells with one pollen grain in angiosperms. They may be spherical or elongated with a head. They fuses producing zygotes .
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Table 1 Structure Haploid/Diploid Structure Produced Process gametophyte sporophyte zygote spore gamete
draw a diagram the parts of alternation of generation; plant stages (gametophyte & sporophyte), diploid, haploid,...
draw a diagram the parts of alternation of generation; plant stages (gametophyte & sporophyte), diploid, haploid, mitosis, meiosis, spore and gamete release, fertilization
Complete the table below based about the alternation of generation of land plants based on the...
Complete the table below based about the alternation of
generation of land plants based on the photo:
Mitosis Multicellular Gametophyte Spores Gametes Gametophyte Generation Haploid (N) Meiosis Fertilization Sporophyte Generation Diploid (2N) Zygote Multicellular Sporophyte Mitosis Sporophyte | Spore Male Gametophyte Female/ Hermaphrodite. Gametophyte Gamete | Zygote | Seed Is the stage 1N or 2N? Is the stage 1 cell or many?
Using the information you have gathered, address the Focus Question: What is the life cycle of...
Using the information you have gathered, address the Focus Question: What is the life cycle of a flowering plant? Draw a circular diagram of the life cycle of a flowering plant. Be sure to include the five structures, listed in Table 1, in the proper order (gametophyte, sporophyte, zygote, spore, gamete). Indicate whether each structure is haploid or diploid and the process by which each structure is produced by the previous structure. You should draw male and female gametophytes and...
Phylum Hepatophyta: Liverworts Like the moss, liverworts begin as a haploid spore. As a liverwort spore...
Phylum Hepatophyta:
Liverworts
Like the moss, liverworts begin as a haploid spore. As a
liverwort spore germinates, it develops into a flat, lobed,
leaf-like structure called a thallus. The thallus
grows prostrate with the ground’s surface, forming
rhizoids that anchor it in place.
Liverworts reproduce asexually primarily by
fragmentation; however, some liverworts may also
reproduce asexually by bundles of tissue called
gemmae. In many liverworts, gemmae develop in
small cup-like structures called gemmae cups.
Splashed from the cups by rain,...
In the moss Polytrichum commune, the haploid chromosome number is 7. A haploid male gamete fuses...
In the moss Polytrichum commune, the haploid chromosome number is 7. A haploid male gamete fuses with a haploid female gamete to form a diploid cell that divides and develops into the multicellular sporophyte. Cells of the sporophyte undergo meiosis to produce haploid cells called spores. What is the probability that an individual spore will contain a set of chromosomes all of which came from the male gamete? (You may assume that no crossing over occurs during meiosis.) 0 0.5...
Compare and contrast organismal lifecycles that are dominated by diploid (or sporophyte, if applicable) and haploid...
Compare and contrast organismal lifecycles that are dominated by diploid (or sporophyte, if applicable) and haploid (or gametophyte, if applicable) phases.
In the alternation of generations lifecycle in plants... A. There is a diploid multicellular phase (sporophyte)...
In the alternation of generations lifecycle in plants... A. There is a diploid multicellular phase (sporophyte) and haploid multicellular phase (gametophyte) The zygote undergoes mitosis to form a multicellular embryo. Meiosis and syngamy both occur.
Describe the complete life cycle of non vascular plants (Bryophyta) and explain the process of alternation...
Describe the complete life cycle of non vascular plants (Bryophyta) and explain the process of alternation of generation in their sexual reproduction.Include but not limited to; gametophyte, sporophyte, zygote formation, diploid and haploid stages, and spore formation.
BIOL 1020 Homework Evolution & Natural Selection 4 NATURAL SELECTION: 1. In your OWN words, explain...
BIOL 1020 Homework Evolution & Natural Selection 4 NATURAL SELECTION: 1. In your OWN words, explain what natural selection is. What is required? What is the result? 2. True or false? For natural selection to work, a population must have genetic variation. Explain your answer. 3. List three sources of genetic variation in a population. Identify which sources are most important for asexually reproducing organisms. Which method is most important for sexually reproducing organisms? 4. List three mechanisms which cause...
51 Review questions: 1. Does the thallus contain vascular tisues? 2. 1s the thallus the gametophyte...
51 Review questions: 1. Does the thallus contain vascular tisues? 2. 1s the thallus the gametophyte or the sporophyte generation? 3. Where are the rhizoids located and what is their function? 4. Where is the pore located and what is its function? (similar to stoma in higher plants) 5. Is the gemmae cup a sexual or asexual reproductive structure? 6. Are gemmae haploid or diploid?_ 7. When rain splashes the gemmae out of the cup, what do they grow into?...
Complete the table below based about the alternation of
generation of land plants based on the photo:
Mitosis Multicellular Gametophyte Spores Gametes Gametophyte Generation Haploid (N) Meiosis Fertilization Sporophyte Generation Diploid (2N) Zygote Multicellular Sporophyte Mitosis Sporophyte | Spore Male Gametophyte Female/ Hermaphrodite. Gametophyte Gamete | Zygote | Seed Is the stage 1N or 2N? Is the stage 1 cell or many?
Phylum Hepatophyta:
Liverworts
Like the moss, liverworts begin as a haploid spore. As a
liverwort spore germinates, it develops into a flat, lobed,
leaf-like structure called a thallus. The thallus
grows prostrate with the ground’s surface, forming
rhizoids that anchor it in place.
Liverworts reproduce asexually primarily by
fragmentation; however, some liverworts may also
reproduce asexually by bundles of tissue called
gemmae. In many liverworts, gemmae develop in
small cup-like structures called gemmae cups.
Splashed from the cups by rain,...
In the alternation of generations lifecycle in plants... A. There is a diploid multicellular phase (sporophyte) and haploid multicellular phase (gametophyte) The zygote undergoes mitosis to form a multicellular embryo. Meiosis and syngamy both occur.
BIOL 1020 Homework Evolution & Natural Selection 4 NATURAL SELECTION: 1. In your OWN words, explain what natural selection is. What is required? What is the result? 2. True or false? For natural selection to work, a population must have genetic variation. Explain your answer. 3. List three sources of genetic variation in a population. Identify which sources are most important for asexually reproducing organisms. Which method is most important for sexually reproducing organisms? 4. List three mechanisms which cause...
51 Review questions: 1. Does the thallus contain vascular tisues? 2. 1s the thallus the gametophyte or the sporophyte generation? 3. Where are the rhizoids located and what is their function? 4. Where is the pore located and what is its function? (similar to stoma in higher plants) 5. Is the gemmae cup a sexual or asexual reproductive structure? 6. Are gemmae haploid or diploid?_ 7. When rain splashes the gemmae out of the cup, what do they grow into?...
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