Question 1

The vast number and variety of flower species is probably related to various kinds of _____.

Accepted Answer

A)  seed dispersal agents
B)  pollinators
C)  herbivores
D)  climatic conditions

Question 2

An important fossil fuel is coal,much of which was formed when _____.

Accepted Answer

A)  northern-latitude bogs accumulated peat
B)  ancient angiosperms got buried under volcanic ash
C)  huge gymnosperms were flooded by an inland sea
D)  extensive forests of seedless vascular plants were buried and compressed

Question 3

What evidence do paleobotanists look for that indicates the movement of plants from water to land?

Accepted Answer

A)  waxy cuticle to decrease evaporation from leaves
B)  loss of structures that produce spores
C)  sporopollenin to inhibit evaporation from leaves
D)  remnants of chloroplasts from photosynthesizing cells

Question 4

The closest relatives of the familiar pine and spruce trees are _____.

Accepted Answer

A)  ferns,horsetails,lycophytes,club mosses
B)  hornworts,liverworts,mosses
C)  gnetophytes,cycads,ginkgoes
D)  elms,maples,aspens

Question 5

Why have biologists hypothesized that the first land plants had a low,sprawling growth habit?

Accepted Answer

A)  At the time of the first land plants,the carbon dioxide,which is necessary for photosynthesis,was primarily located close to the ground.
B)  They were tied to the water for reproduction and thus needed to remain in close contact with the moist soil.
C)  The ancestors of land plants,green algae,lack the structural support to stand erect in air.
D)  Land animals of that period were small so they needed short plants to eat.
E)  There was less competition for space;only once land plants spread out did they start to grow upright.

Question 6

Use the following information when answering the corresponding question(s) .
Scarlet gilia (Ipomopsis aggregata) usually has red flowers in an inflorescence of up to 250 flowers.In certain populations in the Arizona mountains,however,the flowers range from red to pink to white.In early summer,most of the flowers were red.Six to eight weeks later,the same individual plants were still present;the flowers ranged from pink to white,and few red flowers were present.The major pollinators early in the season were two species of hummingbirds active during the day;they emigrated to lower elevations,and the major pollinator later in the season was a hawk moth (a type of moth) .The hawk moth was most active at sunset and later,and it preferred light pink to white flowers after dark.When hummingbirds were present,more red flowers than white flowers produced fruit.When only hawk moths were present,more white flowers produced fruit (K.N.Paige and T.G.Whitham.1985.Individual and population shifts in flower color by scarlet gilia: A mechanism for pollinator tracking.Science 227:315-17) .
-Refer to the paragraph on scarlet gilia.What is the significance of measuring fruit production?

Accepted Answer

A)  It is a measure of pollination success.
B)  It is a measure of seed dispersal success.
C)  It is easier than counting flowers.
D)  It is an indication of predation on the seeds of the plants.

Question 7

Most moss gametophytes do not have a cuticle and are one to two cells thick.What does this imply about moss gametophytes and their structure?

Accepted Answer

A)  They use stomata for gas exchange regulation.
B)  They can easily lose water to,and absorb water from,the atmosphere.
C)  Photosynthesis occurs throughout the entire gametophyte surface.
D)  They have branching veins in their leaves.

Question 8

Which of the following lines of evidence would most support your assertion that a particular plant is an angiosperm?

Accepted Answer

A)  It produces seeds.
B)  It retains its fertilized egg within its archaegonium.
C)  It lacks gametangia.
D)  It undergoes alternation of generations.
E)  It produces gametes by mitosis rather than meiosis.

Question 9

What two major novelties allowed for the first colonization of terrestrial habitats by plants?

Accepted Answer

A)  roots and vascular tissue
B)  cuticle and pores
C)  roots and true leaves
D)  vascular tissue and cuticle
E)  tracheids and vessel elements

Exam 30: Green Plants

Correct Answer
verified

Which of the following lines of evidence would most support your assertion that a particular plant is an angiosperm?

Correct Answer
verified

An important fossil fuel is coal,much of which was formed when _____.

Correct Answer
verified

What two major novelties allowed for the first colonization of terrestrial habitats by plants?

Correct Answer
verified

Why have biologists hypothesized that the first land plants had a low,sprawling growth habit?

Correct Answer
verified

The closest relatives of the familiar pine and spruce trees are _____.

Correct Answer
verified

What evidence do paleobotanists look for that indicates the movement of plants from water to land?

Correct Answer
verified

Most moss gametophytes do not have a cuticle and are one to two cells thick.What does this imply about moss gametophytes and their structure?

Correct Answer
verified

The vast number and variety of flower species is probably related to various kinds of _____.

Correct Answer
verified

Exam 30: Green Plants

Correct AnswerverifiedShow Answer

Which of the following lines of evidence would most support your assertion that a particular plant is an angiosperm?

Correct AnswerverifiedShow Answer

An important fossil fuel is coal,much of which was formed when _____.

Correct AnswerverifiedShow Answer

What two major novelties allowed for the first colonization of terrestrial habitats by plants?

Correct AnswerverifiedShow Answer

Why have biologists hypothesized that the first land plants had a low,sprawling growth habit?

Correct AnswerverifiedShow Answer

The closest relatives of the familiar pine and spruce trees are _____.

Correct AnswerverifiedShow Answer

What evidence do paleobotanists look for that indicates the movement of plants from water to land?

Correct AnswerverifiedShow Answer

Most moss gametophytes do not have a cuticle and are one to two cells thick.What does this imply about moss gametophytes and their structure?

Correct AnswerverifiedShow Answer

The vast number and variety of flower species is probably related to various kinds of _____.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified