Table of Contents
What is a free living protist?
Free-living Protists occupy almost any environment that contains liquid water. Many protists, such as algae, are photosynthetic and are vital primary producers in ecosystems, particularly in the ocean as part of the plankton. Protists make up a large portion of the biomass in both marine and terrestrial environments.
What is Protista mode nutrition?
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).
Are protists haploid or diploid?
Some protists are unicellular in the haploid form and multicellular in the diploid form, which is a strategy also employed by animals. Other protists have multicellular stages in both haploid and diploid forms, a strategy called alternation of generations that is also used by plants.
What is the harmful effects of protists?
Some severe diseases of humans are caused by protists, primarily blood parasites. Malaria, trypanosomiasis (e.g., African sleeping sickness), leishmaniasis, toxoplasmosis, and amoebic dysentery are debilitating or fatal afflictions.
How do protists get nutrition?
Protists get food in one of three ways. They may ingest, absorb, or make their own organic molecules. Ingestive protists ingest, or engulf, bacteria and other small particles. They extend their cell wall and cell membrane around the food item, forming a food vacuole.
What do you call living things in kingdom Protista?
Unusual; one of several groups of living things classified in kingdom Protista (very diverse kingdom, includes hundreds of phyla; members called protists) Nice work! You just studied 67 terms!
Which is best describes the protists as a group?
Which of the following best describes the protists as a group? A) photosynthetic. B) parasitic. C) predatory. D) symbiotic. E) a decomposer. B) parasitic. A) are prokaryotic. B) develop embryos during reproduction. C) form a single clade. D) carry out photosynthesis without chloroplasts. E) obtain nutrition through a variety of different methods.
How are photosynthetic protists named for their whip-like flagella?
Which group of photosynthetic, mostly marine protists were named for the motion created by their two whip-like flagella? When a red tide occurs, huge numbers of microscopic organisms are filtered out of coastal waters by oysters and clams. This sometimes causes the shellfish to become toxic to people who eat them.
How does a protist evolve to become a prokaryote?
D) a protist evolves to become a prokaryote. E) a green alga engulfs a photosynthetic bacterium. C) a nonphotosynthetic protist engulfs a photosynthetic protist. ________ are photosynthetic protists.