Homework Answers
1. Question:- Are the spores produced by the fern sporophyte formed by mitosis or meiosis?
Sol:- Spores produced by the fern sporophyte formed by meiosis.
2. Question:- Do the spores belong to the gametophyte or the sporophyte generation?
Sol:- In fern spores belong to the sporophyte generation.
3. Question:- Are the gametes produced by the mitosis or meiosis?
Sol:- Fern plant gametes produced by the mitosis.
4. Question:- Are the archegonia and antheridia haploid or diploid?
Sol:- Archegonia and antheridia in fern is haploid.
5. Question:- Is the dominant generation for the fern the gametophyte or the sporophyte?
Sol:- The dominant generation for the fern is sporophyte.
5. Question:- Can you suggest an ecological role for ferns?
Sol:- Ferns have a great ecological role, the stem and spore of lycopodium of the ferns species used as a medicine. In ecological successional process ferns also help in progressive successional stage. Many ferns species provided a good food sources for many domestic animals.
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ving questions about ferns: 1. Are the spores produced by the fern sporophyte formed by mitosis...
What is true about the life cycle of a land plant? 1. The gametophyte produces spores...
What is true about the life cycle of a land plant? 1. The gametophyte produces spores by meiosis. 2. The life cycle is entirely haploid, so the sporophyte phase does not exist. 3. The sporophyte produces spores by mitosis. 4. The sporophyte produces spores by meiosis. 5. The gametophyte produces gametes by meiosis.
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?
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?...
Sketch the lifecycle of a bryophyte (alternation of generations). Place the following labels on the sketch:...
Sketch the lifecycle of a bryophyte (alternation of generations). Place the following labels on the sketch: sporophyte, gametophyte, gametes, spores, mitosis, meiosis, diploid, haploid, fertilization, zygote. Sporophytes are attached to which sex gametophyte? _______________________ Are spores haploid or diploid? ______________________ Which life form, gametophyte or sporophyte, undergoes meiosis? ______________________ In mosses (and all bryophytes), which is the dominant life form, sporophyte or gametophyte? ____________________ A) Is the gametophyte of the fern directly protected by the sporophyte? B) Where could you...
Question 14 2 pts What is the name of the structures where the spores are produced...
Question 14 2 pts What is the name of the structures where the spores are produced in this plant? Next → Question 23 2 pts In the diagram of the life cycle of a plant shown below, what is the name of the generation represented by letter 'A'? mitosis А. B fertilization Diploid Haploid D gametes spores mitosis с Ε Question 24 21 To which phylurte does this organism belong?
In ferns, both the gametophyte and sporophyte are physiologically capable of surviving on their own. Which...
In ferns, both the gametophyte and sporophyte are physiologically capable of surviving on their own. Which of the following are reasonable hypotheses for why vascular tissues are present only in the sporophyte generation? Select all that apply. There is no advantage for the gametophyte to grow tall, because fern gametophytes typically produce only male or female gametes at any one time There is no advantage for the gametophyte to grow tall, because gametes must be produced near the ground where...
_28. Seed plants: A) are all heterosporous; B) have motile sperm; C) have photosynthetic, free- living...
_28. Seed plants: A) are all heterosporous; B) have motile sperm; C) have photosynthetic, free- living gametophytes; D) are all monoecious; E) none of the above 29. The first land plants share a most recent common ancestor with a group of aquatic organisms that lived in the littoral zone known as: A) charophyceans; B) chlorophytes; C) catphytes; D) coanocytes; E) cycadophytes 30. Which of the following is true for organisms with zygotic meiosis? A) The gametes are produced from haploid...
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...
28. Seed plants: A) are all heterosporous; B) have motile sperm; C) have photosynthetic, free- living...
28. Seed plants: A) are all heterosporous; B) have motile sperm; C) have photosynthetic, free- living gametophytes; D) are all monoecious; E) none of the above 29. The first land plants share a most recent common ancestor with a group of aquatic organisms that lived in the littoral zone known as: A) charophyceans; B) chlorophytes; C) catphytes; D) coanocytes; E) cycadophytes 30. Which of the following is true for organisms with zygotic meiosis? A) The gametes are produced from haploid...
1) What were some of the challenges that plants had as they moved onto land? (Check...
1) What were some of the challenges that plants had as they moved onto land? (Check all that apply.) A. They no longer had structural support of water. B. They didn’t have water to stop dispersal of gametes. C. They were in danger of drying out without water. D. They were not as susceptible to predators and predators. 2) Pollen grains were a great adaptation for land plants because A. They allowed for dispersal for gametes via wind or animals...
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?
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?...
Question 14 2 pts What is the name of the structures where the spores are produced in this plant? Next → Question 23 2 pts In the diagram of the life cycle of a plant shown below, what is the name of the generation represented by letter 'A'? mitosis А. B fertilization Diploid Haploid D gametes spores mitosis с Ε Question 24 21 To which phylurte does this organism belong?
_28. Seed plants: A) are all heterosporous; B) have motile sperm; C) have photosynthetic, free- living gametophytes; D) are all monoecious; E) none of the above 29. The first land plants share a most recent common ancestor with a group of aquatic organisms that lived in the littoral zone known as: A) charophyceans; B) chlorophytes; C) catphytes; D) coanocytes; E) cycadophytes 30. Which of the following is true for organisms with zygotic meiosis? A) The gametes are produced from haploid...
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...
28. Seed plants: A) are all heterosporous; B) have motile sperm; C) have photosynthetic, free- living gametophytes; D) are all monoecious; E) none of the above 29. The first land plants share a most recent common ancestor with a group of aquatic organisms that lived in the littoral zone known as: A) charophyceans; B) chlorophytes; C) catphytes; D) coanocytes; E) cycadophytes 30. Which of the following is true for organisms with zygotic meiosis? A) The gametes are produced from haploid...
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