Bio II Ch 20 Quiz

1.

1 point

Which structure of a paramecium is analogous to a “reserve copy” of all the cell’s genes?

the gullet

the macronucleus

the micronucleus

the trichocysts

2.

1 point

Which of the statements is true about dinoflagellates?

Many species are luminescent.

They can be both photosynthetic and heterotrophic.

They contain bright yellow pigments.

They possess pillbox-shaped cell walls of silica.

3.

1 point

What very large type of algae lives off the coasts of North America?

Irish moss

sea lettuce

giant kelp

rockweed

4.

1 point

The sporozoan Plasmodium causes the disease known as

malaria.

African sleeping sickness.

algal bloom.

amebic dysentery.

5.

1 point

Multicellular protists are grouped with unicellular protists because multicellular protists

do not resemble plants.

do not resemble fungi.

are very similar to unicellular protists.

do not resemble animals.

6.

1 point

Which substances allow algae to harvest and use the energy from sunlight?

phycobilin and flagellum

cilium and fucoxanthin

oogonium and antheridium

chlorophyll and accessory pigments

7.

1 point

Some products derived from algae include

chemicals in plastics, waxes, paints, and lubricants.

thickeners for food.

drugs for stomach ulcers and high blood pressure.

all of these answers are correct

8.

1 point

The population of small, photosynthetic organisms found near the surface of the ocean is called

pyrophytes.

chrysophytes.

diatoms.

phytoplankton.

9.

1 point

Zooflagellates may live in lakes and streams, where they

feed by sweeping food particles into their gullet.

absorb food through their cell membrane.

feed by surrounding their meal and taking it inside themselves.

penetrate and live within cells of a host.

10.

1 point

To which phylum do amoebas, foraminiferans, and heliozoans belong?

sarcodines

sporozoans

ciliates

pseudopods

11.

1 point

Red algae lack flagella and

centrioles.

accessory pigments.

nuclei.

chlorophyll.

12.

1 point

To which phylum of unicellular plantlike algae do the diatoms belong?

Chrysophyta

Bacillariophyta

Euglenophyta

Pyrrophyta

13.

1 point

Protists that break down organic material include the

funguslike protists.

none of these answers are correct

plantlike protists.

animallike protists.

14.

1 point

Which of the following diseases does the animallike protist known as Entamoeba cause?

malaria

amebic dysentery

potato blight

African sleeping sickness

15.

1 point

In an amoeba, a small cavity within the cytoplasm that stores food is called a

gullet.

contractile vacuole.

pseudopod.

food vacuole.