Which protozoan group consists solely of parasitic forms

Question

1 of 20

Which of the following is a colonial form of green algae?

Giardia

Thiobacillus

Volvox

Paramecium

Question

2 of 20

Land was first colonized about ______ years ago.

100 million

500 million

570 million

1.7 billion

Question

3 of 20

In angiosperms, the male gametophyte develops within ______.

male cones

mycelia

filaments

anthers

Question

4 of 20

Under what abiotic conditions can monomers spontaneously form polymers?

When water evaporates from a hot surface

When ribozymes are present to catalyze the reaction

With the addition of water

By biogenesis

Question

5 of 20

Gametophytes reproduce ______.

by fission

by producing sperm and eggs

by alternation of generations

by budding

Question

6 of 20

Under ideal conditions, prokaryotes are capable of reproducing at a(n) ______ rate.

hypergeometric

exponential

infinite

arithmetic

Question

7 of 20

A pollen grain is a ______.

female gametophyte

sporophyte

type of seed

male gametophyte

Question

8 of 20

Where and when does fertilization occur in the mushroom life cycle?

Underground, as a mycelium begins to spread.

On the surface of the ground, when a spore germinates.

In a mushroom, when nuclei of a heterokaryotic cell fuse.

In a mushroom, when sperm and eggs meet.

Question

9 of 20

According to the theory of endosymbiosis, which organelles evolved from small prokaryotes that established residence within other, larger prokaryotes?

Vacuoles and lysosomes

Golgi apparatus and endoplasmic reticulum

Centrioles and ribosomes

Mitochondria and chloroplasts

Question

10 of 20

What global climatic change gave gymnosperms an advantage over ferns?

The climate becoming hotter and wetter

The climate becoming cooler and drier

Increased fluctuations in global climate

The climate becoming cooler and wetter

Question

11 of 20

Which protozoan group consists solely of parasitic forms?

Apicomplexans

Ciliates

Flagellates

Amoebas

Question

12 of 20

An explorer found a plant that had roots, stems, and leaves. It had no flowers but produced seeds. This plant sounds like a(n)

fern.

bryophyte.

angiosperm.

gymnosperm.

Question

13 of 20

Plants first moved onto land at least ______ years ago.

65 million

475 million

1.2 billion

3.5 billion

Question

14 of 20

The prokaryotic group that tends to inhabit extreme environments belongs to the ______.

kingdom Monera

kingdom Protista

domain Archaea

domain Monera

Question

15 of 20

In angiosperms, what structures house female gametophytes?

Ovules

Petals

Stigma

Sepals

Question

16 of 20

Flagellates, amoebas, apicomplexans, and ciliates are all what type of protist?

Slime molds

Protozoans

Diatoms

Dinoflagellates

Question

17 of 20

All prokaryotic and eukaryotic organisms that photosynthesize fit into which nutritional category?

Chemoautotrophs

Photoheterotrophs

Photoautotrophs

Chemoheterotrophs

Question

18 of 20

From the point of view of an angiosperm, what is the function of fruit?

It is where the male gametophyte develops.

It provides structural support for the plant.

It is a mechanism for the dispersal of seeds.

It attracts pollinators.

Question

19 of 20

Whose experiments demonstrated that, given the conditions on the primitive Earth, biological monomers could arise spontaneously?

Miller and Urey

Darwin

Watson

Margulis

Question

20 of 20

Like plants, fungi have ______; however, in plants they are composed of ______, whereas in fungi they are composed of ______.

cell walls; cellulose; chitin

cell walls; cellulose; peptidoglycan

cell membranes; phospholipids; peptidoglycan

cell membranes; cellulose; phospholipids