Table of Contents
- 1 How does asexual reproductive take place in Volvox explain in brief?
- 2 What type of asexual reproduction is a Protococcus?
- 3 What is the life cycle of Volvox?
- 4 Is Protococcus an algae?
- 5 What colony are formed inside the mother colony of Volvox?
- 6 What is colony of Volvox?
- 7 How does yeast reproduce asexually?
- 8 Is a volvox asexual?
- 9 Do Volvox have cell walls?
How does asexual reproductive take place in Volvox explain in brief?
Volvox reproduces both asexually and sexually. The asexual reproduction takes place under favourable conditions during spring and early summer. These reproductive cells can be recognized by their larger size, prominent nuclei, dense granular cytoplasm, more pyrenoids and absence of flagella.
What type of asexual reproduction is a Protococcus?
Protococcus reproduces only vegetatively by means of cell division. The two or more daughter cells, thus formed, may remain attached with one another for some time, or they may ultimately separate and assume a spherical shape.
What is the life cycle of Volvox?
Volvox is haploid (n) algae, the haploid gametes fertilize to make diploid zygote (2n) which divides by meiosis to make haploid cells (n) which mature into haploid Volvox colony (Fig. 7, 8).
How does a Volvox colony move?
Volvox colonies move through their environment by the coordinated movements of their cells’ flagella. Neighbouring cells are often joined together by strands of cytoplasm, which enable cell-to-cell communication, and the colony moves through water by the coordinated movement of the flagella.
How do Volvocine algae move?
The volvocine algae include both unicellular and multicellular organisms that are closely related and exist today (Kirk 1998). Chlamydomonas are single-celled organisms with two apical flagella, which they use for sensory transduction and for moving around in a wet environment (Figure 2F).
Is Protococcus an algae?
The structure of the single-celled alga Protococcus is similar in some ways to a plant cell. Colonies of these algae cells form green scum on ponds and moist rocks.
What colony are formed inside the mother colony of Volvox?
Volvox is a genus of green algae containing around 20 species of freshwater algae. Thousands of cells together form colonies. There are around 500 to 60,000 cells in each colony of volvox….Volvox Classification.
| Domain | Eukaryota |
|---|---|
| Family | Volvocaceae |
| Genus | Volvox |
What is colony of Volvox?
Volvox form spherical or oval hollow colonies that contain some 500 to 60,000 cells embedded in a gelatinous wall and that are often just visible with the naked eye. Volvox colonies move through their environment by the coordinated movements of their cells’ flagella.
Is Volvox motile or sessile?
The word motile is used to define the movement related characteristics of volvox. This is because, each of the member in the colony resembles a Chlamydomonas (another green alga), and bears two thin, hairlike structures called flagella.
Does the Volvox colony spin clockwise or counterclockwise?
144 Cards in this Set
| Chlamydomonas | |
|---|---|
| What is the significance ofthese structural and functional specializations of Eudorina? | indicate reproductive specialization, the characteristic of most evolutionary advanced organisms |
| Does the Volvox colony spin clockwise or counter-clockwise? | both; vaires |
How does yeast reproduce asexually?
Most yeasts reproduce asexually by budding: a small bump protrudes from a parent cell, enlarges, matures, and detaches. A few yeasts reproduce by fission, the parent cell dividing into two equal cells.
Is a volvox asexual?
Volvox colonies are either sexual or asexual . In addition to biflagellated somatic cells, asexual colonies have specialized reproductive cells (gonidia) that produce small daughter (and sometimes granddaughter) colonies within the parent colony.
Do Volvox have cell walls?
Also in similarity to plants, the chlorophytes, including Volvox, feature cellulose cell walls and chloroplasts. This colonial member of the kingdom Protista can serve as a surrogate in water quality tests for nitrates and other nitrogen-rich dissolved compounds. Worldwide, there are 20 species of Volvox fully described.
How does the Volvox get its nutrition?
Food: The flagella help find mineral nutrients like phosphates and nitrates in the surrounding environment (ponds or lakes). Volvox absorb these nutrients that promote growth and reproduction. Volvox consume plants, bacteria and other organic matter. They prepare their food with the help of photosynthesis.
What do eyespots do for Volvox?
The entire colony rolls over the water surface, and hence Volvox is also called the rolling algae. The eyespot also controls the movement of the flagella by sensing light with the help of their photoreceptive organs. How do they Reproduce Reproduction in Volvox can be both sexual and asexual.