Question 1

From the perspective of flowering plants, the role of fruit is to

Accepted Answer

A)  promote outcrossing. 
B)  store excess mineral ions. 
C)  help the plant withstand harsh environmental conditions. 
D)  attract pollinators. 
E)  achieve seed dispersal. 
A)  promote outcrossing. 
B)  store excess mineral ions. 
C)  help the plant withstand harsh environmental conditions. 
D)  attract pollinators. 
E)  achieve seed dispersal.

Question 2

Of the four groups of gymnosperms, conifers are the most abundant.This group uses _______ for pollination and has dispensed with the need for water for fertilization, allowing its members to flourish in arid environments.

Accepted Answer

The answer of Of the four groups of gymnosperms, conifers...

Question 3

The flowers of a new kind of tropical vine are bright scarlet in color but are not highly scented.These plants are most likely pollinated by

Accepted Answer

A)  beetles. 
B)  bats. 
C)  birds. 
D)  raccoons. 
E)  lizards. 
A)  beetles. 
B)  bats. 
C)  birds. 
D)  raccoons. 
E)  lizards.

Question 4

Refer to the figure, which shows the evolutionary relationships among the angiosperms.   Which group is most closely related to the monocots?

Accepted Answer

A)  Amborella 
B)  Eudicots 
C)  Magnoliids 
D)  Water lilies 
E)  Star anise 
A)  Amborella 
B)  Eudicots 
C)  Magnoliids 
D)  Water lilies 
E)  Star anise

Question 5

In the flowering plants, male gametophytes are called _______.

Accepted Answer

The answer of In the flowering plants, male gametophytes are...

Question 6

Which group is characterized by fruits, flowers, endosperm, and much-reduced gametophytes?

Accepted Answer

A)  Cycads 
B)  Angiosperms 
C)  Conifers 
D)  Gnetophytes 
E)  Ginkgos 
A)  Cycads 
B)  Angiosperms 
C)  Conifers 
D)  Gnetophytes 
E)  Ginkgos

Question 7

Refer to the figure.   Which statement about the figure is false?

Accepted Answer

A)  It shows both a microgametophyte and a megagametophyte. 
B)  The female gametophyte is highly reduced. 
C)  The sperm cells have fused with the egg and polar nuclei. 
D)  The pollen tube has grown through the style of the pistil. 
E)  The pollen grain itself has entered the style. 
A)  It shows both a microgametophyte and a megagametophyte. 
B)  The female gametophyte is highly reduced. 
C)  The sperm cells have fused with the egg and polar nuclei. 
D)  The pollen tube has grown through the style of the pistil. 
E)  The pollen grain itself has entered the style.

Question 8

Refer to the figure, which shows the life cycle of an angiosperm.   If double fertilization were delayed in this plant, the appearance of which two critical structures shown in the diagram would be also delayed?

Accepted Answer

A)  Embryo and integument 
B)  Embryo and endosperm 
C)  Endosperm and integument 
D)  Integument and micropyle 
E)  Pollen tube and endosperm 
A)  Embryo and integument 
B)  Embryo and endosperm 
C)  Endosperm and integument 
D)  Integument and micropyle 
E)  Pollen tube and endosperm

Question 9

In flowers, the inner specialized leaves are called petals, and the outer specialized leaves are called _______.

Accepted Answer

The answer of In flowers, the inner specialized leaves are...

Question 10

Which statement most accurately describes the relationship between animals and pollination?

Accepted Answer

A)  Without insect pollinators, most gymnosperms would be unable to reproduce. 
B)  Many plants and their pollinators have coevolved, forming elaborately specialized mutualisms with one another. 
C)  One of the defining features of all seed plants is the phenomenon of double fertilization-a direct result of insect pollination. 
D)  The role of pollinators is to disperse seeds. 
E)  Most angiosperms are wind pollinated. 
A)  Without insect pollinators, most gymnosperms would be unable to reproduce. 
B)  Many plants and their pollinators have coevolved, forming elaborately specialized mutualisms with one another. 
C)  One of the defining features of all seed plants is the phenomenon of double fertilization-a direct result of insect pollination. 
D)  The role of pollinators is to disperse seeds. 
E)  Most angiosperms are wind pollinated.

Question 11

Refer to the figure.   The flesh of the fruit in part _______ is composed several carpels of a single flower.

Accepted Answer

A)  A 
B)  B 
C)  D 
D)  E 
E)  F 
A)  A 
B)  B 
C)  D 
D)  E 
E)  F

Question 12

Most gymnosperms are pollinated by wind, whereas most angiosperms are pollinated by _______.

Accepted Answer

The answer of Most gymnosperms are pollinated by wind, whereas...

Question 13

Refer to the figure.   The fruit in part _______ is an aggregate of several separate carpels.

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
E)  E 
A)  A 
B)  B 
C)  C 
D)  D 
E)  E

Question 14

All plant life cycles have generations that alternate between the gametophyte generation and the _______ generation.

Accepted Answer

A)  heteromorphic 
B)  sporophyte 
C)  vascular 
D)  isomorphic 
E)  antheridium 
A)  heteromorphic 
B)  sporophyte 
C)  vascular 
D)  isomorphic 
E)  antheridium

Question 15

Refer to the figure.   Some flowers are missing one or more of the following floral organs: sepals, petals, stamens, and carpels.Which floral organ or organs do you think might be found in the flowers that have the fewest floral organ types? Discuss the possibilities, both for a single flower and for a species.

Accepted Answer

To be functional as a reproductive organ

Question 16

The _______ is triploid tissue that nourishes the embryonic angiosperm sporophyte during its early development.

Accepted Answer

The answer of The _______ is triploid tissue that nourishes...

Question 17

In flowering plants, pollen grains are produced in the

Accepted Answer

A)  anther. 
B)  filament. 
C)  stigma. 
D)  sepal. 
E)  tepal. 
A)  anther. 
B)  filament. 
C)  stigma. 
D)  sepal. 
E)  tepal.

Question 18

Despite the absence of true fruits in gymnosperms, many conifers encase their seeds in a fleshy reward to entice _______ to aid in their seed dispersal.

Accepted Answer

The answer of Despite the absence of true fruits in...

Question 19

In some of the most basal clades of angiosperms, all of the following are characteristic of flowers except

Accepted Answer

A)  bilateral symmetry. 
B)  radial symmetry. 
C)  leaflike stamens. 
D)  unfused carpels. 
E)  numerous and separate tepals. 
A)  bilateral symmetry. 
B)  radial symmetry. 
C)  leaflike stamens. 
D)  unfused carpels. 
E)  numerous and separate tepals.

Question 20

You are given two flowers of the same species from two separate plants.One flower has only a pistil, and the other has only stamens.It is most likely that the flowers are _______ and the species is _______.

Accepted Answer

A)  perfect; imperfect 
B)  imperfect; dioecious 
C)  monoecious; imperfect 
D)  dioecious; monoecious 
E)  perfect; monoecious 
A)  perfect; imperfect 
B)  imperfect; dioecious 
C)  monoecious; imperfect 
D)  dioecious; monoecious 
E)  perfect; monoecious

Exam 28: The Evolution of Seed Plants

From the perspective of flowering plants, the role of fruit is to

Of the four groups of gymnosperms, conifers are the most abundant.This group uses _______ for pollination and has dispensed with the need for water for fertilization, allowing its members to flourish in arid environments.

The flowers of a new kind of tropical vine are bright scarlet in color but are not highly scented.These plants are most likely pollinated by

Refer to the figure, which shows the evolutionary relationships among the angiosperms. Which group is most closely related to the monocots?

In the flowering plants, male gametophytes are called _______.

Which group is characterized by fruits, flowers, endosperm, and much-reduced gametophytes?

Refer to the figure. Which statement about the figure is false?

Refer to the figure, which shows the life cycle of an angiosperm. If double fertilization were delayed in this plant, the appearance of which two critical structures shown in the diagram would be also delayed?

In flowers, the inner specialized leaves are called petals, and the outer specialized leaves are called _______.

Which statement most accurately describes the relationship between animals and pollination?

Refer to the figure. The flesh of the fruit in part _______ is composed several carpels of a single flower.

Most gymnosperms are pollinated by wind, whereas most angiosperms are pollinated by _______.

Refer to the figure. The fruit in part _______ is an aggregate of several separate carpels.

All plant life cycles have generations that alternate between the gametophyte generation and the _______ generation.

The _______ is triploid tissue that nourishes the embryonic angiosperm sporophyte during its early development.

In flowering plants, pollen grains are produced in the

Despite the absence of true fruits in gymnosperms, many conifers encase their seeds in a fleshy reward to entice _______ to aid in their seed dispersal.

In some of the most basal clades of angiosperms, all of the following are characteristic of flowers except

You are given two flowers of the same species from two separate plants.One flower has only a pistil, and the other has only stamens.It is most likely that the flowers are _______ and the species is _______.

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Nucleic Acids and the Origin of Life

Cells: the Working Units of Life

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Pathways That Harvest Chemical Energy

Photosynthesis: Energy From Sunlight

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You are given two flowers of the same species from two separate plants.One flower has only a pistil, and the other has only stamens.It is most likely that the flowers are _ and the species is _.