What is a trophosome biology?
A rather specific term, trophosome refers – as per the Wikipedia – to ‘an organ found in some animals that houses symbiotic bacteria that provide food for their host. ‘ Trophé (τροφή) denotes nourishment, soma (σῶμα), body, denoting that trophosomes are intimately involved in their host’s nutrition.
Is the relationship between Riftia Pachyptila and chemosynthetic bacteria an example of symbiosis?
The surprising discovery was that chemosynthesis could support a large and diverse ecosystem. Some animals living near hydrothermal vents, such as the giant tube worm, Riftia pachyptila, have a symbiotic relationship with species of chemosynthetic bacteria.
Are tube worms Chemoheterotrophs?
Tube worms are one of the most amazing animals that inhabit this planet. They posses no digestive system, yet they themselves are not a chemoautotroph. So how do they survive? Tube worms host chemosynthetic bacteria inside their bodies and use the products produced by these organisms to survive.
Why were there sulfur crystals in the trophosome?
The trophosome of Riftia pachyptila was found to be full of sulfur crystals. Why were there sulfur crystals in the trophosome? ______________ a. The trophosome filters toxic sulfides from the water and converts it to sulfur crystals, which are less toxic.
Why is the trophosome important for the worms?
The worms have a special feeding sac, called a trophosome, which provides the bacteria with shelter and ingredients to make food. In turn, the bacteria use these ingredients to make food for the worm. The trophosome and the bacteria inside it are so important that they make up over half the weight of this animal.
What classification is a tube worm?
PolychaeteRiftia pachyptila / Class
What is the tube of a giant tube worm made of?
Giant tube worms can reach 8 feet in length and 1.6 inches in diameter. Giant tube worms have soft, colorless body hidden inside hard tube made of chitin (shells of crustaceans are composed of same substance). Tube offers protection against predators.
What organism lives inside the trophosome of tubeworms?
Instead of eating food like other animals, Riftia allows bacteria to live inside of it and provide its food. The worms have a special feeding sac, called a trophosome, which provides the bacteria with shelter and ingredients to make food. In turn, the bacteria use these ingredients to make food for the worm.
What phylum is a tube worm?
AnnelidRiftia pachyptila / Phylum
Where do Riftia pachyptila live?
East Pacific Rise
Riftia pachyptila lives on the ocean floor near hydrothermal vents on the East Pacific Rise, more than a mile under the sea (Cary et al. 1989).
What is the meaning of trophosome?
Definition of trophosome. 1 : the nutritive zooids of a hydroid — compare gonosome. 2 : a storage organ in an adult mermithid worm consisting of the fat-filled syncytial remains of the intestine.
Where is the trophosome located in a tube worm?
Trophosomes are located in the coelomic cavity in the vestimentiferan tube worms ( Siboglinidae, e.g. the giant tube worm Riftia pachyptila) and in symbiotic flatworms of the genus Paracatenula . Initially, the trophosome in frenulates and vestimentiferans had been identified as a mesodermal tissue.
What is the difference between trophosome and bacteriocyte cytoplasm?
The trophosome consisted anteriorly of a small number of bacteriocytes and extensive mesenchyma, while the posterior of trophosome subsequently consisted of a large population of bacteriocytes and a peripheral peritoneum. The bacteriocyte cytoplasm is abundant in glycogen and contained some electron-dense, round-shape granules.
What is the trophosome of vestimentiferans made of?
The trophosome of vestimentiferans is a complex, multi-lobed body with a vascular blood system that covers the entire trunk region. Each lobule consists of a tissue of bacteriocytes enclosed by an aposymbiotic coelothel.