Chapter 28 Flashcards
What are Protisits?
What is a protist?
The informal name of the group of unicellular or multicellular eukaryotes.
What type of groups are protists?
A polyphyletic group.
What is the size of a protist?
no set size, varies depending on organism.
What are some unique things between different protists?
There is som much variety. Some are unicellular, some multicellular, some are big and some are small, and biologically they are very different from one another.
What are Photoautotrophs?
Self photosynthesize, have chloroplasts.
What are Heterotrophs?
Absorb prey and therefore absorb nutrients.
What are Mixotrophs?
Organisms which combine photosynthesis and heterotrophic nutrition.
do protists reproduce asexually or sexually?
It depends on the Protist, so neither.
What is Endosymbiosis?
The relationship between 2 species, in which one organism lives inside the cell of another organism or a host.
What role do chloroplasts and mitochondria
have in the theory of endosymbiosis?
The mitochondria and chloroplasts are used as proof for the endosymbiotic theory due to the double membrane.
What are the various characteristics of the kingdom Protista?
-Asexual and and sexual reproduction
-Single-Celled
-Unicellular/multicellular
-Diversity!!
What are the different ways protists derive nutrition?
-Protists are the most nutritionally diverse of all eukaryotes
1. Photoautotrophs
2. Heterotrophs
3. Mixotrophs
What are some of the challenges to classifying organisms in the kingdom Protista?
-There is so much diversity
-Advances has caused classification to change
-Different ancestors
-Protista is no longer considered a valid kingdom
Where is Giant Kelp found?
E. Pacific coast from Alaska t California, Australia, S. America, New Zealand and South Africa. WEST COAST.
What is Giant Kelp’s ecological role?
Grows in dense forests which proved cover for fish, invertebrates, and others.
What is the Human health benefit to Giant Kelp?
Edible and used as dietary supplement. Contains vitamins, minerals, potassium and iodine.
What’s the special morphology of Giant Kelp?
Held to sea floor by a hold fast. No roots. Each blade has bulb of gas to hold it upright.
What’s the Wow Factor of Giant Kelp?
Can grow up to 2 feet a day! Can be 150-160 ft tall.
Where are Notiluca scintillans found?
Most marine environments except polar zones. Mostly in shallow coastal waters.
What’s the ecological role of the Noticula scintilanus?
CAase for water discoloration and is a nutrient generator.
What’s the human health aspect to Noticula scintilins?
Toxins in a variety of forms, linked to mortality in aquatic organisms. Only digestible in small amounts.
What is the special morphology of Noticula scintilins?
Resemble jellyfish with bioluminescent features. Green and Red.
“Wow Factor” of Noticula scintilanus?
Known as sea sparkle and creates blue glittering in water resembling northern lights.
Where are Choanoflagelletes found?
Marine and freshwater environment from arctic to tropics.
