Lesson 4- Protists 1

Question 1

Protist

Answer 1

Eukaryote that isn’t a plant, animal, or fungus, have secondary endosymbiosis that leads to unique organelles

Question 2

Supergroup excavata

Answer 2

excavated feeding groove, unique cytoskeleton (free-living, flagella, parasitic/symbiotic)

Question 3

Termite mutualism

Answer 3

termite can’t digest wood, has bacteria in gut that breaks it down

Question 4

Phylum euglenozoa feature (supergroup excavata)

Answer 4

spiral crystalline rod structure in flagella (derived trait)

Question 5

Class Kinetoplastida feature (phylum Euglenozoa, supergroup excavata)

Answer 5

unique single large mitochondria, blood parasites, cause African Sleeping Sickness

Question 6

Class Euglenoidea feature (phylum Euglenozoa, supergroup excavata)

Answer 6

pocket at end of cell with 2 flagella, mixotrophs

Question 7

Phylum Stremenophiles/Heterokontophyta (supergroup SAR )

Answer 7

derived trait: long hairy flagella and short smooth flagella

Question 8

Class Bacillariophyceae/Diatoms (supergroup SAR)

Answer 8

2 shell halves made of silica, photosynthetic, and where we get fossil fuels

Question 9

Diatoms (bacillariophyceae, supergroup SAR) life cycle

Answer 9

Reproduce asexually by dividing, once it’s small enough, it undergoes meiosis, develops sperm or egg, and does sexual reproduction by releasing sperm to fertilize an egg.

Question 10

Class Crysophyceae/Golden Algae (supergroup SAR)

Answer 10

Mixotrophs, solitary or colonial

Question 11

Class Phaeophyceae/Brown Algae

Answer 11

Kelp, multicellular, rootlike “holdfasts”, stemlike “stipe”, floats, leaflike “blades”

Question 12

Life cycle of brown algae (phaeophyceae, supergroup SAR)

Answer 12

Alt. of Gen.
A (diploid) sporophyte has (diploid) sporangium which undergoes meiosis to release spores (haploid) which become gametophyte (haploid) that produces sperm/egg, combine to make zygote (diploid) which grows into sporophyte.

Question 13

Phylum Alveolates (supergroup SAR)

Answer 13

membrane enclosed sac under plasma membrane (alveoli)

Question 14

Class Dinoflagellata (phylum alveolates, supergroup SAR)

Answer 14

algaelike, unicellular, cell plates (cellulose), have flagella, photosynthetic/parasites, (eg zooxanthellae are mutualists who live in corals)

Question 15

Phylum Apicomplexa (supergroup SAR)

Answer 15

malaria parasite, parasitize liver and red blood cells

Question 16

Phylum Ciliophora (supergroup SAR)

Answer 16

have cilia, one macronucleus, several micronuclei