Chapter 28

Question 1

What is a protist?

Answer 1

The informal name of the group of unicellular or multicellular eukaryotes.

Question 1

What type of groups are protists?

Answer 1

A polyphyletic group.

Question 2

What is the size of a protist?

Answer 2

no set size, varies depending on organism.

Question 3

What are some unique things between different protists?

Answer 3

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.

Question 4

What are Photoautotrophs?

Answer 4

Self photosynthesize, have chloroplasts.

Question 5

What are Heterotrophs?

Answer 5

Absorb prey and therefore absorb nutrients.

Question 6

What are Mixotrophs?

Answer 6

Organisms which combine photosynthesis and heterotrophic nutrition.

Question 7

do protists reproduce asexually or sexually?

Answer 7

It depends on the Protist, so neither.

Question 8

What is Endosymbiosis?

Answer 8

The relationship between 2 species, in which one organism lives inside the cell of another organism or a host.

Question 9

What role do chloroplasts and mitochondria
have in the theory of endosymbiosis?

Answer 9

The mitochondria and chloroplasts are used as proof for the endosymbiotic theory due to the double membrane.

Question 10

What are the various characteristics of the kingdom Protista?

Answer 10

-Asexual and and sexual reproduction
-Single-Celled
-Unicellular/multicellular
-Diversity!!

Question 11

What are the different ways protists derive nutrition?

Answer 11

-Protists are the most nutritionally diverse of all eukaryotes
1. Photoautotrophs
2. Heterotrophs
3. Mixotrophs

Question 12

What are some of the challenges to classifying organisms in the kingdom Protista?

Answer 12

-There is so much diversity
-Advances has caused classification to change
-Different ancestors
-Protista is no longer considered a valid kingdom

Question 13

Where is Giant Kelp found?

Answer 13

E. Pacific coast from Alaska t California, Australia, S. America, New Zealand and South Africa. WEST COAST.

Question 14

What is Giant Kelp’s ecological role?

Answer 14

Grows in dense forests which proved cover for fish, invertebrates, and others.

Question 15

What is the Human health benefit to Giant Kelp?

Answer 15

Edible and used as dietary supplement. Contains vitamins, minerals, potassium and iodine.

Question 16

What’s the special morphology of Giant Kelp?

Answer 16

Held to sea floor by a hold fast. No roots. Each blade has bulb of gas to hold it upright.

Question 17

What’s the Wow Factor of Giant Kelp?

Answer 17

Can grow up to 2 feet a day! Can be 150-160 ft tall.

Question 18

Where are Notiluca scintillans found?

Answer 18

Most marine environments except polar zones. Mostly in shallow coastal waters.

Question 19

What’s the ecological role of the Noticula scintilanus?

Answer 19

CAase for water discoloration and is a nutrient generator.

Question 20

What’s the human health aspect to Noticula scintilins?

Answer 20

Toxins in a variety of forms, linked to mortality in aquatic organisms. Only digestible in small amounts.

Question 21

What is the special morphology of Noticula scintilins?

Answer 21

Resemble jellyfish with bioluminescent features. Green and Red.

Question 22

“Wow Factor” of Noticula scintilanus?

Answer 22

Known as sea sparkle and creates blue glittering in water resembling northern lights.

Question 23

Where are Choanoflagelletes found?

Answer 23

Marine and freshwater environment from arctic to tropics.

Question 24

What’s the ecological role of Choanoflagelletes?

Answer 24

Unicellular filter feeders important to carbon cycle and microbial web.

Question 25

Human health with Choanoflagelletes?

Answer 25

No positive or negative change.

Question 26

Special morphology of choanaoflagelletes?

Answer 26

Can form colonies and links with intercellular bridges.

Question 27

What’s the Wow Factor of Choanoflagelletes?

Answer 27

Filter between 10% and 25% of coastal surface water.