Biodiversity- (7) Protists

Question 1

What type of cells do protists have

Answer 1

Multicellular- eukaryotic

Question 2

What are the animal like protists (Protozoans)

Answer 2

The cercozoans, the ciliates, and the flagellates

Question 3

How do animal like protists eat?

Answer 3

They are heterotrophs

Question 4

Explain the cercozoans

Answer 4

ex) amoeba. No cell wall so they are flexible and change shape. Move + feed using Pseudopods (extensions of cytoplasm)

Question 5

explain the ciliates

Answer 5

Ex) paramecium
Hairlike projections on surface (cilia). Cilia used for locomotion and feeding.

Question 6

explain the flagellates

Answer 6

Have a long hair like projection called a flagellum. Used for locomotion and feeding.

Question 7

Name the fungus like protists

Answer 7

Plasmodial slime moulds, cellular slime moulds, water moulds.

Question 8

Explain plasmodial slime modes.

Answer 8

TIny slug-like organisms that creep over damp decaying plant material. Feed by engulfing small particles of food into their cytoplasm.

Question 9

Explain cellular slime moulds

Answer 9

Exist as individual amoeboid cells w one nucleas each. Each cell feeds by ingesting tiny bacteria or yeast cells.

Question 10

Explain water moulds

Answer 10

Resemble fungi. Most live on dead organic species but some species are parasites on fish, insects, and plants. They extend fungus like threads into their host and release digestive enzymes.

Question 11

Types of plant-like protists

Answer 11

Diatoms, dinoflagellates, euglenoids

Question 12

Explain diatoms

Answer 12

Type of phytoplankton (Aquatic), produce huge amounts of 02 at fast rates

Question 13

Explain dinoflagellates

Answer 13

Type of phytoplankton, flagella @ 90 degrees angle from each other. Twirl to move like a propeller, reproduce quickly “algal blooms”.

Question 14

Explain euglenoids

Answer 14

Autotrophs in sunlight + heterotrophs in dark. Use both photosynthesis and flagellum to obtain nutrients.