2.4/3.1 Chapter Questions - Protists

Question 1

What are four groups of animal-like protists?

Answer 1

1. Ciliates
   2.Flagella
2. Amoebas
3. spore-forming

Question 2

What are pseudopods and what is their function?

Answer 2

Pseudopods are used for feeding and locomotion. They use internal cytoskeleton to move and create different forms. They live in aqueous environments

Question 3

In what way do slime moulds resemble fungi?

Answer 3

• Cell wall contains chitin
• Heterotrophs
• “External digestion”
• Release enzymes to breakdown things around them in order to absorbs nutrients because they cannot eat per say because they have no mouth and stomach
• They contain more than one nuclei

Question 4

What do sporozoans produce that allow them to be carried by vectors and injected into new hosts?

Answer 4

Apical complex

Question 5

What are the three groups of fungus-like protists?

Answer 5

Plasmodial slime moulds, cellular slime moulds, and water moulds

Question 6

Describe the cell walls of diatoms.

Answer 6

They are rigid, with outer-layer of silica

Question 7

in coastal areas of Canada where shellfish are harvested for human consumption, local authorities monitor the populations of dinoflagellates in the water during harvest season. Why do they do this?

Answer 7

They monitor the dinoflagellates because they reproduce very quickly which can result in an increase of algae population. This would impact shellfish because when they eat algae it produces biotoxins that can accumulate in their tissue (impacts their nervous system)

Question 8

How are dinoflagellates important to reef-building corals?

Answer 8

Dinoflagellates provide energy for coral reefs to form their structures.

Question 9

Explain why it would be difficult to categorize a euglenoid protist as a producer or a consumer.

Answer 9

It would be difficult to categorize euglenoid protist as a producer or a consumer because they are autotrophic in the light but heterotrophic in the dark

Question 10

What are the three main groups of seaweed?

Answer 10

Green algae
Brown algae
Red algae

Question 11

Explain this statement: “Green algae are structurally diverse.”

Answer 11

They are structurally diverse by their shapes of each type

Question 12

What is the advantage to the red algae of having accessory photosynthetic pigments such as phycoerythrin?

Answer 12

They are able to thrive in depths of the ocean