Homework Answers
a) zygote is diploid, so zygote will divide meiotically to produce haploid cells, the haploid cells produce zoospores via mitosis, so the answer is B) B only
b) zoospores are produced by haploid cells via mitosis, so zoospores are haploid, and the zoospores develop to the multicellular stage via mitosis so the answer is d) A and C only.
c) Ulothrix reproduce sexually and asexually like fungi and similar to fungi the diploid stage is produced by the fusion of haploid cells, the diploid stage undergoes meiosis and produces haploid cells which develop to fungi, Ulothrix also produces diploid zygote which undergoes meiosis to produce haploid cells which develop to multicellular haploid stage so the lifecycle of Ulothrix is more similar to that of fungi.
Add Answer to:
In some organisms, such as the multicellular green algae Ulothrix, the zygote is the only diplodce"...
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...
Which of the following statements is TRUE? (a) Diploid organisms reproduce only sexually. (b) All sexually...
Which of the following statements is TRUE? (a) Diploid organisms reproduce only sexually. (b) All sexually reproducing organisms have at least two copies of each gene at some stage in their life cycle. (c) Gametes have only one chromosome. (d) Another name for the unfertilized egg cell is the zygote. (e) Mutations in somatic cells are passed on to individuals of the next generation.
my assigned organism is Naked mole rat (Heterocephalus glaber). please type it. The first step in...
my assigned organism is Naked mole rat (Heterocephalus glaber). please type it. The first step in understanding how information is passed from one generation to the next is understanding how cells divide, particularly how the DNA is passed on to the resulting cells. In this discussion, you will describe the life cycle of an animal or plant of your choosing. The animal or plant you choose must have a sexual life cycle (although it may also have an asexual life...
Cells are the basic units of structure and function in all organisms. A key feature in...
Cells are the basic units of structure and function in all organisms. A key feature in the life cycle of plants is the alternation of multicellular haploid and diploid generations. Imagine a lineage of flowering plants in which mitotic cell division did not occur between the events of meiosis and fertilization. Describe how this change in the timing of cell division would affect the structure and life cycle of plants in this lineage.
Questions 14-20 14. A zygote is always: 15. Pyrenoids are structures in some algae that provide...
Questions 14-20
14. A zygote is always: 15. Pyrenoids are structures in some algae that provide for storage of: 16. Some unicellular algae have light-sensing organelles called: 17. Diatoms are economically and ecologically significant because they produce large amounts of: 18. Organisms with many nuclei but no divisions into individual cell (such as Physarum) are called: a. haploid b. diploid c. triploid d. none of these c. amino acids d. water a. starchb. glycoprotein a. bladders b. vacuoles c. eyespots...
Question 29 3 pts The biggest difference between chlorophyte life cycles and the generalized life cycle...
Question 29 3 pts The biggest difference between chlorophyte life cycles and the generalized life cycle of land plants is that chlorophytes are unable to reproduce sexually; their only method of reproduction is asexual. O land plants alternate between a diploid and a haploid stage; chlorophytes are always haploid. O land plants undergo mitotic cell divisions as part of their life cycle; chlorophytes divide through binary fission. O chlorophytes require an endosymbiotic host in order to complete their life cycle....
4. Complete the following table. Mitosis Meiosis MitosisMeiosis Synapsis (Yes or no Crossing over (When) Anaphase...
4. Complete the following table. Mitosis Meiosis MitosisMeiosis Synapsis (Yes or no Crossing over (When) Anaphase I results When do centromeres divide No. of divisions No. of cells resulting Anaphase II results No. of chromosomes in daughter cells Assume cell divisions are occurring on the arrows in this gen- eralized plant life cycle. Show where mitosis and meiosis occur. 5. Multicellular diploid plant Spore Multicellular haploid plant Starting with a diploid cell (A) that has 2 homologous chromo- somes (2N-2),...
Compare and contrast the life cycles of humans and plants (alternation of generations). For each of...
Compare and contrast the life cycles of humans and plants (alternation of generations). For each of the following aspects of the life cycles, determine whether the two life cycles are similar or different. If they are different, describe the difference. If they are similar, describe how they are similar. (Hint: look at the figures in your book or the class slides showing the life cycles as you answer this question.) a) the process that produces gametes b) the ploidy of...
8. Which of the statements about the organization of complex multicellular organisms is false? Only some...
8. Which of the statements about the organization of complex multicellular organisms is false? Only some cells are in direct contact with the environment. Exterior cells receive environmental signals directly, whereas interior cells receive environmental signals indirectly Exterior cells are highly differentiated, whereas interior cells are not differentiated. Interior cells cannot grow as fast as exterior cells without mechanisms to transfer nutrients between cells. Signals transferred from exterior cells to interior cells can activate or repress gene expression in the...
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,...
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...
Questions 14-20
14. A zygote is always: 15. Pyrenoids are structures in some algae that provide for storage of: 16. Some unicellular algae have light-sensing organelles called: 17. Diatoms are economically and ecologically significant because they produce large amounts of: 18. Organisms with many nuclei but no divisions into individual cell (such as Physarum) are called: a. haploid b. diploid c. triploid d. none of these c. amino acids d. water a. starchb. glycoprotein a. bladders b. vacuoles c. eyespots...
Question 29 3 pts The biggest difference between chlorophyte life cycles and the generalized life cycle of land plants is that chlorophytes are unable to reproduce sexually; their only method of reproduction is asexual. O land plants alternate between a diploid and a haploid stage; chlorophytes are always haploid. O land plants undergo mitotic cell divisions as part of their life cycle; chlorophytes divide through binary fission. O chlorophytes require an endosymbiotic host in order to complete their life cycle....
4. Complete the following table. Mitosis Meiosis MitosisMeiosis Synapsis (Yes or no Crossing over (When) Anaphase I results When do centromeres divide No. of divisions No. of cells resulting Anaphase II results No. of chromosomes in daughter cells Assume cell divisions are occurring on the arrows in this gen- eralized plant life cycle. Show where mitosis and meiosis occur. 5. Multicellular diploid plant Spore Multicellular haploid plant Starting with a diploid cell (A) that has 2 homologous chromo- somes (2N-2),...
Compare and contrast the life cycles of humans and plants (alternation of generations). For each of the following aspects of the life cycles, determine whether the two life cycles are similar or different. If they are different, describe the difference. If they are similar, describe how they are similar. (Hint: look at the figures in your book or the class slides showing the life cycles as you answer this question.) a) the process that produces gametes b) the ploidy of...
8. Which of the statements about the organization of complex multicellular organisms is false? Only some cells are in direct contact with the environment. Exterior cells receive environmental signals directly, whereas interior cells receive environmental signals indirectly Exterior cells are highly differentiated, whereas interior cells are not differentiated. Interior cells cannot grow as fast as exterior cells without mechanisms to transfer nutrients between cells. Signals transferred from exterior cells to interior cells can activate or repress gene expression in the...
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,...
Most questions answered within 3 hours.
-
What will the standard deviation of these exam grades be? A
square bracket means inclusive, so...
asked 2 minutes ago -
Beginning Retained Earnings are $ 79 comma 000 $79,000; sales
are $ 31 comma 700 $31,700;...
asked 4 minutes ago -
Please explain/demonstrate how to use NLTK to test unigram,
bigram, and trigram character models on guessing...
asked 11 minutes ago -
what you feel is most important to you and why regarding your
typing skills?
asked 12 minutes ago -
Consider a play of the casino game `Quick Draw'. In this game, a
player pays $11...
asked 21 minutes ago -
How do the mechanical features of bone affect its roles as
repositories of phosphate and calcium,...
asked 25 minutes ago -
P agreed to buy 100 barrels of widget oil, which was stored in a
large tank...
asked 26 minutes ago -
The unstable isotope 40K is used for dating rock samples. Its
half-life is 1.28×109y. How many...
asked 28 minutes ago -
Compare and contrast constructed-response items and
selected-response items.
Identify at least one (1) advantage and one...
asked 30 minutes ago -
A) Find the moment of inertia of a 2 meter long stick with a
mass of...
asked 29 minutes ago -
For the code below write a public static main() method
in class Student that:
- creates...
asked 31 minutes ago -
Please show all steps. Thank you
A 1.0-cm-diameter pipe widens to 2.0 cm, then narrows to...
asked 44 minutes ago