protists

Question 1

what are protists? simple definition

Answer 1

“The simplest definition is that protists are all the eukaryotic organisms that are not animals, plants, or fungi.”
1. important primary producers
2. pathogens in some organisms

Question 2

protist classification: Six supergroups

Answer 2

1. Excavata
2. Chromalveolata
3. Rhizaria
4. Archaeplastida
5. Amoebozoa
6. Opisthokonta

Question 3

protist nutrition

Answer 3

• photoautotrophs: plant-like
• heterotrophs: animal-like
• mixotrophs: combination of autotrophy and heterotrophy

Question 4

protist reproduction

Answer 4

can reproduce asexually or sexually ( meiosis and fertilization) under stressful condition

Question 5

why are protists important primary producers

Answer 5

they form the base of the ecological food web - all other organisms in the community depend on them for food
~30% of the world’s photosynthesis is preformed by diatoms, dinoflagellates, multicellular algae, and other protists