Solution-What global climatic change gave gymnosperms an | Homework Helpers

Question 1 Which of the following is a colonial form of green algae?


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Question 2 Land was first colonized about ______ years ago.

100 million
500 million
570 million
1.7 billion

Question 3 In angiosperms, the male gametophyte develops within ______.

male cones

Question 4 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 aIDition of water
By biogenesis

Question 5 Gametophytes reproduce ______.

by fission
by producing sperm and eggs
by alternation of generations
by buIDing

Question 6 Under ideal conditions, prokaryotes are capable of reproducing at a(n) ______ rate.


Question 7 A pollen grain is a ______.

female gametophyte
type of seed
male gametophyte

Question 8 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 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 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 Which protozoan group consists solely of parasitic forms?


Question 12 An explorer found a plant that had roots, stems, and leaves. It had no flowers but produced seeds. This plant sounds like a(n)


Question 13 Plants first moved onto land at least ______ years ago.

65 million
475 million
1.2 billion
3.5 billion

Question 14 The prokaryotic group that tends to inhabit extreme environments belongs to the ______.

kingdom Monera
kingdom Protista
domain Archaea
domain Monera

Question 15 In angiosperms, what structures house female gametophytes?


Question 16 Flagellates, amoebas, apicomplexans, and ciliates are all what type of protist?

Slime molds

Question 17 All prokaryotic and eukaryotic organisms that photosynthesize fit into which nutritional category?


Question 18 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 Whose experiments demonstrated that, given the conditions on the primitive Earth, biological monomers could arise spontaneously?

Miller and Urey

Question 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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