Question 1

Moss sperm are produced in

Accepted Answer

A)  archegonia
B)  sporophytes
C)  antheridia
D)  lycophylls
E)  stomataF) A) and C)
G) B) and E)

Question 2

Which of the following statements is the most accurate description of fruits and seeds?

Accepted Answer

A)  "Fruits" and "seeds" are synonymous terms.
B)  Fruits always have fleshy coverings,while those of seeds are always hard.
C)  Fruits are structures that contain seeds and foster seed dispersal.
D)  Fruits contain endosperm but seeds do not.
E)  Fruits are produced only by angiosperms and seeds are produced exclusively by gymnosperms.F) A) and E)
G) C) and E)

Question 3

In the evolution of plants,wood appeared before seeds.

Accepted Answer

A) True 
 B)False

Question 4

Pseudoephedrine,based on the chemical structure of ephedrine from the Gnetophyte genus Ephedra,is used as a treatment for:

Accepted Answer

A)  cancer
B)  congestion
C)  headache
D)  malaria
E)  erectile dysfunctionF) A) and B)
G) B) and D) B

Question 5

Among the mammals,only some primates (including most humans) have color vision.What was the likely advantage that probably drove the evolution of primate color vision?

Accepted Answer

A)  The ability to identify plants with medicinal value
B)  The ability to find ripe fruit
C)  The ability to enjoy the aesthetic value of flowers
D)  The ability to prepare for winter as portended by autumn colors of leaves
E)  The ability to identify grains most appropriate for domesticationF) B) and E)
G) A) and D)

Question 6

Why did the dinosaurs become extinct?

Accepted Answer

A)  A meteorite or comet crashed into the Earth,causing smoke and ash that blocked the sun and caused death of the plants that were food for herbivorous dinosaurs.
B)  Cycads and other gymnosperms upon which herbivorous dinosaurs fed declined,and the dinosaurs were unable to digest the angiosperms that arose in their place.
C)  Increasing carbon dioxide levels produced climates too hot for the incubation of their eggs.
D)  The changing climate caused the evolution of most dinosaur species into the existing bird,mammal,and reptile species that exist today.
E)  The pollen produced by the rise in flowering plants produced allergenic responses in dinosaurs and interfered with their ability to communicate with potential mates.F) B) and E)
G) All of the above

Question 7

Which of the following are arranged in the sequence in which the various taxa first appeared in time?

Accepted Answer

A)  bacteria,protists,liverworts,lycophytes,streptophytes,angiosperms,gnetophytes
B)  prokaryotes,protists,mosses,streptophytes,conifers,ferns,angiosperms
C)  bacteria,streptophytes,protists,mosses,angiosperms,cycads
D)  protists,prokaryotes,streptophytes,ferns,mosses,angiosperms,conifers
E)  prokaryotes,protists,streptophytes,mosses,ferns,conifers,angiospermsF) A) and C)
G) A) and E)

Question 8

Global deforestation remains a major concern as huge tracts of rainforest are cut down each day.How does the removal of such large numbers of trees from the world's forests affect the concentration of carbon dioxide in the atmosphere?

Accepted Answer

A)  The concentration of carbon dioxide increases,which has a warming effect on the climate.
B)  The concentration of carbon dioxide increases,which has a cooling effect on the climate.
C)  The concentration of carbon dioxide decreases,which has a warming effect on the climate.
D)  The concentration of carbon dioxide decreases,which has a cooling effect on the climate.
E)  The concentration of carbon dioxide remains unchanged,with no effect on the climatE.F) A) and B)
G) A) and C)

Question 9

Conifers produce copious amounts of pollen during reproduction.What would be a likely consequence of a significant reduction in the amount of pollen produced by conifers?

Accepted Answer

A)  There would be little effect because pollinators would still be able to transfer pollen from the male cones to the appropriate female cones.
B)  There would be a significant negative effect on the viability of seeds because double fertilization could not occur,so there would be no food available for the growing embryo.
C)  There would be a decrease in the number of seeds produced because the chances of pollen reaching a female cone of the same species would be reduced.
D)  There would be a significant decrease in the genetic diversity of embryos,but little effect on the number of seeds as only one pollen grain is necessary to fertilize a single female cone.E) A) and D)
F) B) and C)

Question 10

The main effect of burning peat,wood,coal,and petroleum on the Earth's climate is

Accepted Answer

A)  The fires significantly heat the air and cause a rise in global temperature.
B)  The smoke blocks sunlight from reaching the Earth and causes a significant lowering of the Earth's temperature.
C)  The fires release back into the atmosphere carbon dioxide that was once taken from the atmosphere by plants and stored in their own tissues;the increased carbon dioxide holds in solar heat and causes a rise in temperature.
D)  The rising heat from fires produces wind that cools the surface of the Earth.
E)  The fires use up oxygen that would otherwise block penetration of ultraviolet light from reaching the Earth;the increased ultraviolet radiation heats the Earth.F) A) and B)
G) A) and C)

Question 11

A tracheid is

Accepted Answer

A)  a gametophyte cell
B)  a small branch of an insect trachea
C)  a seed-bearing stem
D)  a specialized vascular cell
E)  a reproductive chamberF) C) and D)
G) A) and B)

Question 12

Stamens and carpels are,in fact,modified sporangia-bearing leaves.

Accepted Answer

A) True 
 B)False

Question 13

Secondary metabolites are organic compounds produced outside of primary metabolic processes essential for cell structure and growth.Based on this information,which of the following is an example of a secondary metabolite?

Accepted Answer

A)  glucose
B)  lipids
C)  proteins
D)  RNA
E)  steroidsF) A) and D)
G) A) and B)

Question 14

Sporopollenin is

Accepted Answer

A)  a tough protective covering on spores
B)  pollen that is produced in a sporophyte
C)  the conversion of pollen to spores
D)  a capsule housing pollen
E)  food stored in pollen for the growing embryoF) B) and E)
G) A) and E)

Question 15

A prolonged period without rain is causing a major drought in the American Midwestern states.How would you expect crops to respond initially to the stress caused by the drought?

Accepted Answer

A)  They will take in more carbon dioxide.
B)  They will take in less carbon dioxide.
C)  They will release more oxygen.
D)  They will increase rates of photosynthesis.
E)  They produce fewer secondary metabolites.F) B) and C)
G) D) and E) B

Question 16

The fruits of legumes:

Accepted Answer

A)  are fleshy and sweet and are dispersed by birds
B)  are winged and dispersed by wind
C)  split down both sides and the seeds fall out
D)  have corky hulls that make them buoyant and are dispersed by water
E)  have hooks that cling to mammals and are dispersed by themF) A) and E)
G) D) and E)

Question 17

Although land plants,mosses are still tied to water because of their flagellated sperm.

Accepted Answer

A) True 
 B)False

Question 18

Ulva is a genus of algae in the phylum Chlorophyta.What characteristic does Ulva share with ferns?

Accepted Answer

A)  Intercellular communication via plasmodesmata
B)  The production of sperm and eggs for reproduction
C)  The ability to synthesize organic nutrients using light
D)  An embryonic sporophyte housed in maternal tissues
E)  Vascular tissue for the transport of substancesF) B) and C)
G) A) and B) C

Question 19

In seed-bearing plants,what structure becomes the seed following fertilization?

Accepted Answer

A)  The microsporangium
B)  The pollen grain
C)  The ovule
D)  The endosperm
E)  The sporophyteF) A) and B)
G) C) and E)

Question 20

The conducting tissue found in vascular plants that functions in transportation of materials throughout the plant,but does not lend structural support to the stem is

Accepted Answer

A)  xylem
B)  phloem
C)  sporopollenin
D)  endosperm
E)  lycophyllF) A) and B)
G) A) and C)

Exam 23: Plants

Moss sperm are produced in

Correct AnswerverifiedShow Answer

Which of the following statements is the most accurate description of fruits and seeds?

Correct AnswerverifiedShow Answer

In the evolution of plants,wood appeared before seeds.

Correct AnswerverifiedShow Answer

Pseudoephedrine,based on the chemical structure of ephedrine from the Gnetophyte genus Ephedra,is used as a treatment for:

Correct AnswerverifiedB

Among the mammals,only some primates (including most humans) have color vision.What was the likely advantage that probably drove the evolution of primate color vision?

Correct AnswerverifiedShow Answer

Why did the dinosaurs become extinct?

Correct AnswerverifiedShow Answer

Which of the following are arranged in the sequence in which the various taxa first appeared in time?

Correct AnswerverifiedShow Answer

Global deforestation remains a major concern as huge tracts of rainforest are cut down each day.How does the removal of such large numbers of trees from the world's forests affect the concentration of carbon dioxide in the atmosphere?

Correct AnswerverifiedShow Answer

Conifers produce copious amounts of pollen during reproduction.What would be a likely consequence of a significant reduction in the amount of pollen produced by conifers?

Correct AnswerverifiedShow Answer

The main effect of burning peat,wood,coal,and petroleum on the Earth's climate is

Correct AnswerverifiedShow Answer

A tracheid is

Correct AnswerverifiedShow Answer

Stamens and carpels are,in fact,modified sporangia-bearing leaves.

Correct AnswerverifiedShow Answer

Secondary metabolites are organic compounds produced outside of primary metabolic processes essential for cell structure and growth.Based on this information,which of the following is an example of a secondary metabolite?

Correct AnswerverifiedShow Answer

Sporopollenin is

Correct AnswerverifiedShow Answer

A prolonged period without rain is causing a major drought in the American Midwestern states.How would you expect crops to respond initially to the stress caused by the drought?

Correct AnswerverifiedB

The fruits of legumes:

Correct AnswerverifiedShow Answer

Although land plants,mosses are still tied to water because of their flagellated sperm.

Correct AnswerverifiedShow Answer

Ulva is a genus of algae in the phylum Chlorophyta.What characteristic does Ulva share with ferns?

Correct AnswerverifiedC

In seed-bearing plants,what structure becomes the seed following fertilization?

Correct AnswerverifiedShow Answer

The conducting tissue found in vascular plants that functions in transportation of materials throughout the plant,but does not lend structural support to the stem is

Correct AnswerverifiedShow Answer

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B

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B

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C

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