Diatoms
Diatoms are algal protists that have a two-part shell made of silica. These microscopic organisms are known for their unique and intricate glass-like shells, which come in a wide variety of shapes and patterns. Diatoms play a crucial role in aquatic ecosystems as primary producers and are a key component of the phytoplankton community.
Various types of shells can be found in the ocean, including gastropod shells, bivalve shells, and cephalopod shells. These shells are created by different types of marine animals and come in a wide range of shapes, sizes, and colors.
Foraminiferans are amoeboid protists that secrete calcium carbonate shells called tests and have pseudopods for movement and feeding. Radiolarians are marine protists with intricate silica skeletons, radial symmetry, and use their pseudopods for capturing food. Both groups are important contributors to marine ecosystems and are used extensively in paleontological studies.
Shells themselves are nonliving structures that are produced by living organisms, such as mollusks. Shells are made of calcium carbonate and serve as protective coverings for the organisms that create them.
A chonchologist studies shells, particularly mollusk shells such as snails, clams, and cephalopods. They may focus on the classification, morphology, distribution, and ecology of shells.
Diatoms
Foraminiferans (or forams) are single-celled protists with a calcium carbonate (CaCO3) shell around their plasma membrane. ***Straight out of my biology text book
They're called foraminifera, single-celled protists that construct shells.
Protists defend themselves through various mechanisms such as producing toxins, forming protective shells or cysts, using flagella to escape predators, and engulfing or expelling invaders through phagocytosis. Some protists also have mutualistic relationships with other organisms for protection.
Algae, specifically diatoms, are the plantlike protists with delicate shells that make up a large proportion of the phytoplankton in freshwater ecosystems. These organisms play a crucial role in aquatic food webs and are important for oxygen production and nutrient cycling in aquatic environments.
With double triggers YES
Foraminifera, a group of single-celled protists with calcareous shells, contribute significantly to limestone formation. When these organisms die, their shells accumulate on the ocean floor and, over geological time, are compacted and cemented together to form limestone rock. This process occurs in marine environments, where the accumulation of foraminiferal remains can lead to extensive limestone deposits.
uf you don't know so why uyou to go diatoms double shells make of is gul bebe qandol Jan ast this answer is by gulab zo
One very important impact protists have on the living world is a pathogens (disease causers). Case in point is Endaomeba histolytica a causative agent of dysentery. In many organisms they aid in the gut digesting food. The shells of Sarcodina (Radioloaia) are used as an abrasive. Plasmodium vivax causes malaria.
They eat mussels and other animals with shells.
Double-aught refers to the size of the shot (or pellets) contained within the shell, each of which in this case is roughly 8.1mm (0.33") in diameter.
27 doubles and 8 triples