AnswersFall 24 GSE Biology B-ICLab: Natural Selection-Standard Bio 4.2

The Life Cycles of Plants Answers

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What do all plant life cycles have in common?

A
Fertilization produces seeds.
B
Sperm cells are carried by the wind to egg cells.
C
Diploid and haploid phases alternate.
D
Sporophytes are formed by meiosis.
5

What occurs in the life cycle of a moss but not in the life cycle of a gymnosperm?

A
In moss, sperm and egg cells are produced after haploid spores are released from the sporophyte.
B
In moss, sperm and egg cells grow in cones that are attached to the sporophyte plant.
C
In moss, sporophyte and gametophyte generations alternate.
D
In moss, when two haploid cells fuse, they form a diploid zygote that begins the sporophyte generation.
6

Which field is associated with studying plants?

A
zoology
B
bacteriology
C
botany
D
pathology
7

This diagram shows the life cycle of plants and the alternation of generations. Which row in the table contains the correct labels for the plant life cycle diagram?

Question illustration
A
A
B
B
C
C
D
D
8

In seedless plants, haploid gametophytes are produced from

A
diploid spores that undergo mitosis.
B
haploid spores that undergo meiosis.
C
diploid spores that undergo meiosis.
D
haploid spores that undergo mitosis.
11

Which term is the name of the diploid stage of the plant life cycle?

A
gametophyte
B
sporophyte
C
sperm
D
egg
12

What do the moss life cycle and the fern life cycle have in common?

A
Double fertilization produces a 3n cell.
B
Seeds are protected and nourished by a fruit.
C
The zygote is the first cell of the gametophyte phase.
D
Fertilization produces a diploid cell.
13

Which topic is most likely to be studied by a botanist?

A
insect metamorphosis
B
viral replication
C
plant growth
D
animal physiology
14

Which best describes the alternation of generations?

A
Fertilization produces haploid spores.
B
Meiosis produces a diploid zygote.
C
A gametophyte is its diploid phase.
D
A gametophyte is its haploid phase.
15

What occurs in the life cycle of a moss but not in the life cycle of a gymnosperm?

A
In moss, sperm and egg cells are produced after haploid spores are released from the sporophyte.
B
In moss, sperm and egg cells grow in cones that are attached to the sporophyte plant.
C
In moss, sporophyte and gametophyte generations alternate.
D
In moss, when two haploid cells fuse, they form a diploid zygote that begins the sporophyte generation.
16

Ferns are seedless plants. Below is a photograph of the rattlesnake fern, or Botrychium virginianum, which is found all across North America. Which structure is involved in the reproduction of this plant?

Question illustration
A
spores
B
pollen
C
cones
D
fruit
17

What is a flowering seed plant called?

A
angiosperm
B
gymnosperm
C
fern
D
moss
18

Which field is associated with studying plants?

A
zoology
B
bacteriology
C
botany
D
pathology
19

Consider the nonflowering plant growing along the wall that is pictured below. What type of plant is this?

Question illustration
A
angiosperm
B
bryophyte
C
seed
D
gymnosperm
20

In a plant’s life cycle, how many sporophyte generations occur between one gametophyte generation and the next time that eggs and sperm are produced?

A
zero
B
one
C
two
D
four

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