Deck 14: Plant Reproduction

Question 1

The correct sequence of the following events is

A) fertilization, germination, pollination.
B) germination, pollination, fertilization.
C) pollination, fertilization, germination.
D) pollination, germination, fertilization.

Answer 1

C

Question 2

A rhizome is a

A) fruit that is underground.
B) leaf that is underground.
C) root that is above ground.
D) stem that is underground.

Answer 2

D

Question 3

The form of a fern that we are used to seeing is a

A) gametophyte and is haploid.
B) gametophyte and is diploid.
C) sporophyte and is haploid.
D) sporophyte and is diploid.

Answer 3

D

Question 4

A(n) __________ produces pollen grains.

A) anther
B) carpel
C) filament
D) style

Question 5

The letter B represents the __________ generation.

A) sporophyte
B) gametophyte

Question 6

The sex life of the saguaro cactus begins

A) immediately after formation.
B) after 5-10 years.
C) after 35-50 years.
D) after 100 years.

Question 7

The function of a central cell is to

A) collect pollen for fertilization.
B) develop into an egg.
C) develop into a pollen grain.
D) store food for the seed.

Question 8

In animals, meiosis produces __________, and in plants, meiosis produces __________.

A) gametes; gametes
B) gametes; spores
C) spores; gametes
D) spores; spores

Question 9

In the reproductive cycle of a fern, a zygote develops into

A) sperm and egg.
B) spores.
C) a young gametophyte.
D) a young sporophyte.

Question 10

The part of a flower that is sticky to collect pollen is the

A) carpel.
B) sepal.
C) stigma.
D) style.

Question 11

Another term for vegetative reproduction is

A) alternation of generations.
B) asexual reproduction.
C) fertilization.
D) sexual reproduction.

Question 12

Which of the following statements is true of meiosis?

A) It decreases diversity and decreases the amount of chromosomes.
B) It decreases diversity and increases the amount of chromosomes.
C) It increases diversity and decreases the amount of chromosomes.
D) It increases diversity and increases the amount of chromosomes.

Question 13

__________ occurs at step C.

A) Fertilization
B) Mitosis
C) Meiosis
D) Zygote formation

Question 14

The ovules in a flower are located within a(n)

A) anther.
B) ovary.
C) stamen.
D) style.

Question 15

This figure represents the __________ in the life cycle of a fern.

A) sporophyte generation only
B) gametophyte generation only
C) alternation of generations
D) none of these

Question 16

The saguaro cactus flowers in the

A) dry period, which is April-June.
B) dry period, which is July-August.
C) wet period, which is April-June.
D) wet period, which is July-August.

Question 17

A clone is the result of

A) asexual reproduction, which involves fertilization.
B) asexual reproduction, which does not involve fertilization.
C) sexual reproduction, which involves fertilization.
D) sexual reproduction, which does not involve fertilization.

Question 18

The term haploid refers to having

A) one quarter of the normal amount of chromosomes.
B) half of the normal amount of chromosomes.
C) the normal amount of chromosomes.
D) twice the normal amount of chromosomes.

Question 19

Which of the following is not a female component of a flower?

A) anther
B) carpel
C) stigma
D) style

Question 20

When a plant reaches sexual maturity, the genes that control the production of __________ are inactivated and the genes that control __________ are activated.

A) flowers; leaves
B) flowers; roots
C) leaves; flowers
D) leaves; roots

Question 21

An endosperm develops when the

A) pollen grain begins to form.
B) pollen grain sticks to a stigma.
C) sperm fertilizes the central cell.
D) sperm fertilizes an egg.

Question 22

Bats and moths are attracted to __________ flowers.

A) blue
B) purple
C) red
D) white

Question 23

Cotyledons are the __________ of a plant.

A) developing seeds
B) first developing leaves
C) gametes
D) stored energy

Question 24

Long-day plants typically flower in which season?

A) fall
B) spring
C) summer
D) winter

Question 25

A ripened ovary is called a(n)

A) endosperm.
B) fruit.
C) ovule.
D) seed.

Question 26

Seeds that germinate right next to the parent plant compete for

A) minerals.
B) sunlight.
C) water.
D) all of these

Question 27

Put the following events in the proper order:
I.Pollen tube develops
Ii.Pollen grain lands on the stigma
Iii.Sperm fertilizes the egg.

A) i, ii, iii
B) i, iii, ii
C) ii, i, iii
D) iii, ii, i

Question 28

How do scientists propose that coconuts traveled from tropical locales to Hawaii?

A) by air
B) by birds
C) by humans
D) by wind

Question 29

Animal pollinators are attracted to plants by

A) a pleasing aroma.
B) the appearance of flowers.
C) nectar.
D) all of these

Question 30

Mitosis is involved in

A) asexual reproduction and growth.
B) asexual reproduction and genetic diversity.
C) sexual reproduction and growth.
D) sexual reproduction and genetic diversity.

Question 31

The function of an endosperm is to

A) attract pollinators.
B) develop into an embryo.
C) discourage animals from eating the plant.
D) store starch and oils.

Question 32

What is ethylene?

A) a food source for the developing embryo
B) a ripening hormone
C) a substance to discourage animals from eating fruit
D) a type of nectar

Question 33

Each pollen grain consists of __________ cell(s) covered in an outer coat.

A) one
B) two
C) three
D) four

Question 34

The term inflorescence refers to the

A) aroma of flowers.
B) arrangement of flowers on a stem.
C) color of the flowers.
D) type of nectar produced by the flowers.

Question 35

At the present time, animals are responsible for _____ percent of the pollination of angiosperms.

A) 10
B) 50
C) 75
D) 90

Question 36

Coconut seeds are usually dispersed via

A) air.
B) animals.
C) water.
D) More than one of these answers is correct.

Question 37

Plants determine the seasons by measuring

A) the amount of moisture.
B) light.
C) temperature.
D) all of these

Question 38

The sterile portions of a flower are the

A) petals and pistils.
B) petals and sepals.
C) petals and carpels.
D) sepals and carpels.

Question 39

A seedling no longer needs its stored food sources once it develops

A) an embryo.
B) cotyledons.
C) leaves.
D) roots.

Question 40

If an individual living in a northern climate has allergies in the late summer, it is most likely due to

A) long-day plants.
B) short-day plants.
C) either short-day or long-day plants.
D) There is not enough information given to determine which type of plant is involved.

Question 41

Why do some seeds have to pass through an animal's digestive tract in order to germinate?

A) The animal digests the seed coat.
B) There is a lack of oxygen.
C) There is a lack of sunlight.
D) The temperature is appropriate.

Question 42

If you want your poinsettia to bloom in the summertime, you will have to change the

A) amount of water.
B) length of day.
C) temperature.
D) type of fertilizer.

Question 43

Why is some pollen self-incompatible?

A) so the pollen will more likely disperse via animals or wind
B) so the plant will need less energy
C) so the plant will need less water
D) so there will be a mixing of genes

Question 44

True vegetables are not derived from

A) fruits.
B) leaves.
C) roots.
D) stems.

Question 45

If you want your population of plants to be genetically diverse, you should utilize the process known as

A) asexual reproduction.
B) cloning.
C) sexual reproduction.
D) vegetative reproduction.

Question 46

Scientists have various methods of investigating reproductive methods in plants. One way is to examine pollen to ovule ratios (P/O). This ratio indicates the likelihood of a pollen grain reaching the female component of the same species of plant. Species A plant releases approximately 10,000 pollen grains per 100 ovules, whereas species B plant releases approximately 1,000,000 pollen grains per 100 ovules. What is the pollen to ovule ratio of the species A plant?

A) 10
B) 100
C) 1000
D) 10,000,000

Question 47

Why is it better for a seed to germinate at a distance from the parent plant?

A) so it will not compete with the parent plant for nutrients from the soil
B) so it will not compete with the parent plant for sunlight
C) so it will not compete with the parent plant for water
D) all of these

Question 48

Cotyledons develop into

A) leaves.
B) roots.
C) stems.
D) all of these

Question 49

Scientists have various methods of investigating reproductive methods in plants. One way is to examine pollen to ovule ratios (P/O). This ratio indicates the likelihood of a pollen grain reaching the female component of the same species of plant. Species A plant releases approximately 10,000 pollen grains per 100 ovules, whereas species B plant releases approximately 1,000,000 pollen grains per 100 ovules. What is the pollen to ovule ratio for species B?

A) 100
B) 10,000
C) 100,000
D) 100,000,000

Question 50

Coconuts in the form that we are used to seeing are actually

A) fruits.
B) leaves.
C) seeds.
D) stems.

Question 51

It would be an advantage to have the absence of petals (or reduced petals) in a plant that distributes pollen via

A) animals.
B) humans.
C) water.
D) wind.

Question 52

Why is sexual reproduction sometimes preferable to asexual reproduction?

A) increased genetic diversity
B) fewer raw materials needed
C) less energy required
D) More than one of these answers is correct.

Question 53

When planting seeds, why should you plant more seeds than you expect to grow?

A) Animals may eat some seeds.
B) Some seeds may not germinate.
C) The wind may disperse some seeds to an unsuitable environment.
D) all of these

Question 54

If you had a garden full of a variety of plants, you might notice that the only pollinators of a plant called trumpet vines are hummingbirds. Can you anticipate anything about the appearance of these flowers? What is the advantage of having a single pollinator for your plant species?

Question 55

Scientists have various methods of investigating reproductive methods in plants. One way is to examine pollen to ovule ratios (P/O). This ratio indicates the likelihood of a pollen grain reaching the female component of the same species of plant. Species A plant releases approximately 10,000 pollen grains per 100 ovules, whereas species B plant releases approximately 1,000,000 pollen grains per 100 ovules. Based on the pollen to ovule ratios, which statement appears to be true?

A) Species A probably distributes its pollen via the wind.
B) Species B probably distributes its pollen via the wind.
C) The pollen from species B is probably distributed by animals.
D) Both species probably distribute their pollen via the same method.

Question 56

Most seeds are dormant until

A) conditions are favorable.
B) drastic conditions are present.
C) the timing is right.
D) conditions are favorable and the timing is right.