Biology - Protists (test + lab copy)

Question 1

What are the typical characteristics of all protists? How are they defined?

Answer 1

Protists usually live in moist or aquatic conditions. They are all eukaryotic organisms and mainly unicellular. They can be defined by the way they obtain food (heterotrophs or autotrophs) and their method of movement.

Question 2

What type of protists are amoeba? Draw a diagram for it with an explanation

Answer 2

Amoeba (or rhizopods) are animal - like, unicellular protists that are a type of proozoa.

Question 3

collective name for plant like protists

Answer 3

diatoms

Question 4

both unicellular and heterotrophic

Answer 4

amoeba and paramecium

Question 5

What type of protists are seaweed

Answer 5

plant like protist, type of algae

Question 6

What is the difference between a seaweed and a land plant

Answer 6

Unlike a land plant, a seaweed does not have specialised cells and is simply multicellular. A seaweed does not have roots, leaves, or a stem like a land plant. Instead, it consists of blades, a thallus, float, a stipe and holdfast.

Question 7

some examples of protists

Answer 7

euglena, diatom and algae (plant like/photosynthetic), amoebas, plasmodium and slime mold

Question 8

What is the oral groove in the protozoan used for

Answer 8

taking in food

Question 9

What are rhizopods

Answer 9

Rhizopods are one of the three categories that protozoa can be divided into. They are also called “false feet”. They change the shape of their cell membrane to extend their cytoplasm and grow pseudopods (false feet) which they use to move around and also feed themselves.

Question 10

What are protozoa

Answer 10

Animal - like protists that are mainly heterotrophs

Question 11

What are ciliates

Answer 11

They are a type of protozoa that have a hair-like structure called cilia which helps them to move around and obtain food. e.g. paramecium

Question 12

what are flagellates

Answer 12

they are one of the three types of protozoa which have a whip-like structure known as flagella. This helps them to move. Some examples are giardia and euglena.

Question 13

what is the difference + similarity between fungi like protists and typical fungi

Answer 13

fungi like protists have cell wall made of cellulose, unlike typical fungi which have a cell wall made of chitin. However their similarity is the way that they feed (by decomposing).

Question 14

what are two examples of fungi

Answer 14

yeasts and mushrooms

Question 15

what are examples of fungi like protists

Answer 15

slime molds, water molds and plasmodium