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Life Science > Protista > Flashcards

Protista Flashcards

1
Q

What are the common characteristics of protista

A

Simple
Eukaryotes
Single-celled
But can be joined together
They all live in moist environments because they have no protection against drying out
They usually reproduce asexually (binary fission)

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2
Q

What are protistas variable characteristics?

A

Microscopic (Amoeba)
Macroscopic (giant kelp)
Can be heterotrophs (unable to make own food)
Can be autotrophs (able to make their own food)

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3
Q

What are the two subcategories of Protista?

A

Plant-like Protista
Animal-like Protista

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4
Q

What are plant-like protista commonly called?

A

Algae

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5
Q

Characteristics of Algae?

A

simple
eukaryotes
aquatic

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6
Q

What is algae’s method of eating?

A

Autotrophic: contain chlorophyll in chloroplasts to make own food.

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7
Q

What do algae release during photosynthesis?

A

Large quantities of oxygen

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8
Q

How do algae reproduce

A

Asexually

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9
Q

What does it mean if algae are unicellular and microscopic?

A

Diatoms that have cell sales containing silica, and dinoflagellates that have flagella.

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10
Q

Example of Multicellular and macroscopic algae?

A

Seaweeds

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11
Q

Example of free-floating algae?

A

Diatoms and spirogyra

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12
Q

Examples of seaweeds that are fixed?

A

kelp

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13
Q

What are animal-like protists called?

A

Protozoans

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14
Q

What does it mean if protozoans are unicellular?

A

They are microscopic

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15
Q

What does it mean if protozoans are heterotrophs?

A

They cannot make their own food.

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16
Q

How would protozoans get food if they are heterotrophic?

A

Some ingest via phagocytosis for intracellular digestion (Amoeba)
Others absorb nutrients directly through the cell membrane (Plasmodium)
Swim around actively to search for food

17
Q

What are the Protozoan groups?

A

Amoeboids
Ciliates
Flagellates
Parasites

18
Q

How do Amoeboids move and feed?

A

By means of temporary cytoplasmic projections called pseudopodia

19
Q

How do ciliates get food?

A

Use hair-like structures called cilia to swim

20
Q

How do Flagellates move?

A

Use flagella

21
Q

Parasites?

A

Non-motile

22
Q

What is Plankton?

A

Refers to the numerous micro-organisms floating in currents of the open oceans.

23
Q

What is Plankton divided into?

A

Phytoplankton (plant-like unicellular protists)
Zooplankton (animal like unicellular protists)

Life Science (6 decks)

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