How do Gonium reproduce?
Asexual reproduction by simultaneous division of all cells in the colony to form autocolonies, or by a formation of 2-4 zoospores in each cell.
What does Gonium?
-gonium. n combining form. indicating a seed or reproductive cellarchegonium.
Why do colonies of Gonium consist of only 4 8 16 or 32 cells Why are there no 23 celled colonies?
Why do colonies of Gonium consist of only 4, 8, 16, or 32 cells? Why are there no 23-cell colonies? Odd numbers are impossible because cells divide simultaneously, doubling the number of cells.
What is the significance of the structural and functional specializations of Eudorina?
144 Cards in this Set
Chlamydomonas | |
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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 |
What is the colony size of Chlamydomonas?
Chlamydomonas reinhardtii, a unicellular, photosynthetic green alga in the Chlamydomonadaceae, has never had a multicellular ancestor yet is closely related to the volvocine algae, which express multicellularity in colonies of up to 50,000 cells [4].
Why does volvox have a Haplontic life cycle?
Volvox and all volvocine species have a haplontic life cycle (Fig. 3) where vegetative (i.e., mitotic) haploid-phase reproduction can be maintained indefinitely, and where sex is triggered by either nutrient or hormonal signals.
What is Nannandrium Oedogonium?
The nannandrous species are always dioecious (heterothallic) i.e., antheridia and oogonia are borne on different filaments. In this type the antheridia develop on a very small filament termed as dwarf male or nannandrium. In nannandrous type initially androsporangia are developed in series on normal sized filament.
What is the classification for Eudorina?
EudorinaEudorina / Scientific name
How do Chlamydomonas reproduce?
Reproduction. Chlamydomonas reproduces asexually when haploid cells divide (often multiple times) and form 2, 4, 8 or more daughter cells, which are then released.
Is Volvox Haplontic or Diplontic?
Difference Between Diplontic and Haplontic Life Cycle
Diplontic Life Cycle | Haplontic Life Cycle |
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Examples | |
Angiosperms, Gymnosperms, some algae such as Fucus, Cladophora, etc. | Most of the algae such as Volvox, Spirogyra, etc. |
Is Volvox haplontic life cycle?
Haplontic life cycle found in many algae, like Volvox, Spirogyra, Ulothrix, Chlamydomonas etc.
Which of the following alga is evolved through Volvocine line of evolution?
unicellular Chlamydomonas
The Volvocine line of evolution is the first type of evolutionary trend in green algae (Chlorophyta). It is called volvocine trend as the unicellular Chlamydomonas develops into colonial (coenobia), motile type algae (volvocine) at the end of this line.
What is the order of Oedogonium?
OedogoniaceaeOedogonium / Order
What is filament in Oedogonium?
Oedogonium filaments are typically unbranched and only one cell thick. Each cylindrical cell of the filament, with the exception of the basal cell that serves as a rootlike holdfast, contains a netlike chloroplast and a large central vacuole. Oedogonium algae. Oedogonium filaments with visible oogonia (swollen cells).
What is Nannandrous and Macrandrous?
nodulosum etc. In dioecious macrandrous species antheridia and oogonia are produced on separate male and female plants of normal size. (ii) Nannandrous: The female or oogonia bearing plants are normal. The antheridia are produced on special type of small or dwarf plants, known as Dwarf males or Nannandria.
What is the significance of these structural and functional specializations in Eudorina?
Is Volvox is Isogamous?
Volvox is facultatively sexual and the sexual reproduction type is Oogamous type.
What is the order of Chlamydomonas?
ChlamydomonadalesChlamydomonas / Order
What is the life cycle of Chlamydomonas?
(a) The sexual life cycle of Chlamydomonas reinhardtii consists primarily of four critical stages – gametogenesis, zygote formation, zygote maturation (zygospore formation), and meiosis (zygospore germination). Gametogenesis is induced by the loss of a nitrogen source and light.
Does Volvox show haplontic life cycle?
In the diplontic life cycle, the diploid stage or sporophyte is the dominant and independent stage of the plant and performs photosynthesis….Difference Between Diplontic and Haplontic Life Cycle.
Diplontic Life Cycle | Haplontic Life Cycle |
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Examples | |
Angiosperms, Gymnosperms, some algae such as Fucus, Cladophora, etc. | Most of the algae such as Volvox, Spirogyra, etc. |