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Which of the following is a colonial form of green algae?
2 of 20
Land was first colonized about ______ years ago.
3 of 20
In angiosperms, the male gametophyte develops within ______.
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
5 of 20
Gametophytes reproduce ______.
by producing sperm and eggs
by alternation of generations
6 of 20
Under ideal conditions, prokaryotes are capable of reproducing at a(n) ______ rate.
7 of 20
A pollen grain is a ______.
type of seed
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.
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
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
11 of 20
Which protozoan group consists solely of parasitic forms?
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)
13 of 20
Plants first moved onto land at least ______ years ago.
14 of 20
The prokaryotic group that tends to inhabit extreme environments belongs to the ______.
15 of 20
In angiosperms, what structures house female gametophytes?
16 of 20
Flagellates, amoebas, apicomplexans, and ciliates are all what type of protist?
17 of 20
All prokaryotic and eukaryotic organisms that photosynthesize fit into which nutritional category?
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.
19 of 20
Whose experiments demonstrated that, given the conditions on the primitive Earth, biological monomers could arise spontaneously?
Miller and Urey
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
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