2.3 Protozoan Protista

Question 1

Topic - Protozoans

Question 2

They are heterotrophs (predators or parasites) without a cell wall.
T/F

Answer 2

True

Question 3

They are the primitive relatives of animals.
T/F

Answer 3

True

Question 4

There are four major groups of protozoans:

Answer 4

I. Amoeboid Protozoans
II. Flagellated Protozoans
III. Ciliated Protozoans
IV. Sporozoans

Question 5

Topic - Amoeboid Protozoans

Question 6

They live in freshwater, seawater, or moist soil.
T/F

Answer 6

True

Question 7

They move and capture prey by putting out pseudopodia (false feet).
Example.

Answer 7

Amoeba

Question 8

______ engulfs prey by surrounding it.

Answer 8

Pseudopodia

Question 9

Marine forms have silica shells on their surface.
T/F

Answer 9

True

Question 10

Some of them are parasites.
Example.

Answer 10

Entamoeba histolytica (causes Amoebic dysentery)

Question 11

Topic - Flagellated Protozoans

Question 12

They are either free-living or parasitic.
T/F

Answer 12

True

Question 13

They move by ______.

Answer 13

Flagella

Question 14

The parasitic forms cause diseases such as sleeping sickness.
Example.

Answer 14

Trypanosoma (sleeping sickness)
(Vector - TseTse fly)

Question 15

Topic - Ciliated Protozoans

Question 16

They are aquatic, actively moving organisms using thousands of ______ and have ______ for Osmoregulation.

Answer 16

Cilia; Contractile Vacuole

Question 17

They contain two types of nuclei:

Answer 17

A Micronucleus and a Macronucleus

Question 18

They have a cavity called ______ that opens outside the cell surface.

Answer 18

Gullet

Question 19

The coordinated movement of rows of cilia causes the water laden with food to be steered into the gullet.
Example.

Answer 19

Paramecium

Question 20

Topic - Sporozoans

Question 21

They have an infectious spore-like stage in their life cycle.

Answer 21

Plasmodium (malarial parasite)

Question 22

Plasmodium has a vector named:

Answer 22

Female Anopheles Mosquito