protists

Question 1

general characteristics

Answer 1

• usually found in moist environments
• very diverse
• autotrophic or heterotrophic
• uni or multicellular
• diff. methods of movement

Question 2

shared characteristic of all protists

Answer 2

they are not animals, plants or fungi

Question 3

three distrinct groups of protists

Answer 3

• animal-like/protozoa
• plant-like
• fungi-like/mycota

Question 4

animal-like protists/protozoa

Answer 4

• many parasitic (cause disease)
• cannot make own food
• reproduce via binary fission

Question 5

holozoic

Answer 5

engulf food through endocytosis

Question 6

saprozoic

Answer 6

release digestive enzymes into environment and then absorb digested food

Question 7

animal-like/protozoa examples

Answer 7

• amoeba
• paramecium
• plasmodium (causes malaria)

Question 8

amoeba movement

Answer 8

• use pseudopods (fake foot)
• help w/ movement and getting food

Question 9

paramecium movement

Answer 9

• cillia
• hair-like projections allow them to move

Question 10

plant-like protists

Answer 10

• contain chloroplasts to carry out photosynthesis
• reproduce through binary fission & conjugation

Question 11

plant-like protists examples

Answer 11

• phytoplankton
• euglena
• algae

Question 12

euglena movement

Answer 12

• flagella
• tail-like projections that are used to propel the cell through water

Question 13

fungi-like protists/mycota

Answer 13

• cannot make their own food
• most are decomposers
• reproduce asexually through spores

Question 14

fungi-like protists/mycota examples

Answer 14

• slime mould
• downy mildew

Question 15

why is algae good?

Answer 15

• helps maintain healthy aquatic ecosystem
• can be used as food for humans
• used as fertilizer
• provide ⅔ of the world’s oxygen

Question 16

why are protists good?

Answer 16

• protists that are decomposers recycle nutrients
• many are used in medicine

Question 17

why are protists bad?

Answer 17

can cause severe diseases: malaria and sleeping sickness (affects the central nervous system)

Question 18

climate change and protists

Answer 18

• climate change causes ocean acidity killing protists like algae, which can harm food chains since they’re primary producers
• malaria caused by plasmodium spread through mosquitos in tropical climates, but global warming means that the mosquitos can be found in new areas