What are dinotoms?
We suggest that ‘dinotoms’ are a mixed lineage of dinoflagellates possessing a wide variety of diatom-derived plastids at different stages of integration with their host, due to the repeated ESD replacements.
How does the dinoflagellate move?
Dinoflagellates swim by means of two flagella, movable protein and microtubule strands that propel the cell through the water. The longitudinal flagellum extends out from the sulcal groove of the hypotheca (posterior part of cell); when it whips back and forth it propels the cell forward.
How many membranes are in tertiary endosymbiosis?
3-4 membranes
Tertiary endosymbiosis Although previous endosymbiotic events resulted in the increase in the number of membranes, tertiary plastids can have 3-4 membranes. The most largely studied tertiary plastids and found in dinoflagellates.
Does a diatom have chloroplast?
Diatom Chloroplast Structure and Genomes Diatoms and other photosynthetic members of the stramenopile algae possess a chloroplast derived from the secondary endosymbiosis of a red alga (Figure 2a).
What is the purpose of Kleptoplasty?
Kleptoplasty is the behavior of taking chloroplasts from a food source and incorporating them into the consumer’s cells. The root word klepto- comes from the Greek word for thief. Organisms capable of kleptoplasty typically eat algae or aquatic plants and “steal” the undigested chloroplasts.
Which of the following describes a dinoflagellate?
Dinoflagellates are a group of unicellular protists that can be identified using the light microscope, and are (usually) recognized by their golden-brown plastids, assimilative cell with indented waist, distinctive swimming pattern, and relatively large nucleus that contains visible chromosomes.
Is a dinoflagellate a living fossil?
Dinoflagellates are alveolates possessing two flagella, the ancestral condition of bikonts. About 1,555 species of free-living marine dinoflagellates are currently described….Dinoflagellate.
| Dinoflagellate Temporal range: Triassic or earlier–Present | |
|---|---|
| Ceratium sp. | |
| Scientific classification | |
| Clade: | SAR |
| Infrakingdom: | Alveolata |
What is the difference between primary secondary and tertiary endosymbiosis?
The main difference between primary and secondary endosymbiosis is that primary endosymbiosis is the engulfing and absorbing a prokaryotic cell by a eukaryotic cell, whereas secondary endosymbiosis is the engulfing and absorbing of a eukaryotic cell by another eukaryotic cell that has already undergone primary …
What is the purpose of a diatom?
Since diatoms are able to photosynthesize, they convert dissolved carbon dioxide in the water into oxygen. They are a primary food source for higher organisms in the food chain, such as invertebrates and small fish. Diatoms can also play important roles in the energy and nutrient cycles of water resources.
What is another type of organism that does Kleptoplasty?
The only multicellular animals capable of kleptoplasty are a group of sea slugs called the saccoglossans (SF Fig. 2.3). They eat algae and incorporate the stolen chloroplasts into the tissues of their digestive tract. Sacoglossans have been referred to as “leaves that crawl” and “solar-powered sea slugs.”
https://www.youtube.com/watch?v=WhUj8JyT1tM