What illness is caused by protist?
What illness is caused by protist?
Most protist diseases in humans are caused by protozoa. Protozoa make humans sick when they become human parasites. Trypanosoma protozoa cause Chagas disease and sleeping sickness. Giardia protozoa cause giardiasis, and Plasmodium protozoa cause malaria.
What are the features of Protoctists?
A few characteristics are common between protists.
- They are eukaryotic, which means they have a nucleus.
- Most have mitochondria.
- They can be parasites.
- They all prefer aquatic or moist environments.
How do you classify a protist?
The protists can be classified into one of three main categories, animal-like, plant-like, and fungus-like. Grouping into one of the three categories is based on an organism’s mode of reproduction, method of nutrition, and motility.
Is a protist a virus?
Protists are unicellular eukaryotes and harbor a wide spectrum of viruses, from small RNA viruses to giant DNA viruses.
Why kingdom Protista is considered an artificial grouping?
That is, all plants evolved from one ancestral plant, all animals from one ancestral animal, and all fungi from one ancestral fungus. The protista, however, are not; they are almost certainly polyphyletic and did not arise from a single ancestral protist. Hence, protista is an artificial grouping of organisms.
What is the mode of nutrition for protists?
The major modes of nutrition among protists are autotrophy (involving plastids, photosynthesis, and the organism’s manufacture of its own nutrients from the milieu) and heterotrophy (the taking in of nutrients).
What is an example of a plant-like protist?
Seaweed and kelp are examples of multicellular, plant-like protists. Kelp can be as large as trees and form a “forest” in the ocean (Figure below).
What is an example of a fungus-like protist?
Two major types of fungus-like protists are slime molds and water molds.
What is the main difference between protozoa and animals?
Differences between a protozoan cell and an animal cell: Animal cells have extra-cellular digestion mechanism while Protozoan cells have intra-cellular digestion mechanism. Animals are multi-cellular generally, and thus Animal cells have a complex microenvironment as compared to Protozoan uni-cellular organisms.
What is a protozoan and why isn’t it classified an animal?
Animal-like protists are commonly called protozoa (singular, protozoan). They are animal-like because they are heterotrophs, and are capable of moving. Although protozoa are not animals, they are thought to be the ancestors of animals.