Deck 30: Flowering Plants: Reproduction

Question 1

The following sequence represents events in the development of a fruit:

A)pollination,fertilization,embryo,ovary matures.
B)pollination,germination of pollen,endosperm,ovule.
C)pollination,endosperm,embryo,ovule matures.
D)pollination,fertilization,germination of pollen,ovule matures,embryo forms.
E)pollination,double fertilization,ovule matures,embryo forms,ovary matures.

Answer 1

A

Question 2

The correct arrangement of flower parts from the outside to the inside is:

A)carpels,stamens,sepals,petals.
B)petals,stamens,carpels,sepals.
C)stamens,sepals,petals,carpels.
D)sepals,petals,stamens,carpels.
E)stamens,carpels,sepals,petals.

Answer 2

D

Question 3

Which of the following events must occur before fertilization can happen?

A)Double meiosis
B)Mitosis
C)Haploidization
D)Pollination
E)Carpellization

Answer 3

D

Question 4

Which of the following is NOT part of the male reproductive parts of a flower?

A)Anthers
B)Microspores
C)Pollen
D)Sperm cells
E)Ovule

Question 5

How would you expect a mutation that prevents the production of small RNA molecules to affect the flowering of plants such as winter wheat,which normally flower in the spring after cold exposure?

A)Flowers will appear earlier than normal.
B)Flowers will appear without cold exposure.
C)Flowers not appear or will appear late.
D)Such a mutation will not affect flowering.

Question 6

Which one of the following is not a variation of flowers frequently considered in investigations of flowers and their functions?

A)Fragrance
B)Color
C)Shape
D)Number of parts
E)Preferred soil conditions

Question 7

Capsaicin is a compound in chili peppers that produces a burning sensation in mammalian tissues.In mammals,capsaicin binds to the TRPV1 transmembrane channel.Interestingly,the TRPV1 channel in birds does not respond to capsaicin.What implications could this have for chili pepper plants?

A)Birds will avoid eating chili peppers.
B)Chili pepper seeds cannot be dispersed.
C)Mammals are likely responsible for the dispersal of chili pepper seeds.
D)Birds are likely responsible for the dispersal of chili pepper seeds.

Question 8

As described in your book,many commercial flowers have extra whorls of flowers,based on a mutation that causes stamens to develop as extra petals.How do you predict these commercial flowers reproduce among themselves?

A)Sexually
B)They cannot reproduce
C)Somatic embryogenesis
D)Double fertilization

Question 9

A basic difference between self-pollination and cross-pollination is:

A)the method of pollen delivery.
B)whether insects are involved in pollination.
C)where the pollen came from.
D)whether the pollen germinateD.
E)how often pollination occurs.

Question 10

Which one of the following is true of the sporophyte stage of a flowering plant?

A)It is haploid.
B)It is a nonphotosynthetic stage.
C)It is the obvious stage,for example an oak tree.
D)It is dependent on the gametophyte for nutrition.

Question 11

Male gametophytes are produced by which of the following processes?

A)Meiosis
B)Mitosis
C)Neither mitosis nor meiosis
D)Gametogenesis
E)Microsporophyte generation

Question 12

Double fertilization is important to the reproductive process because it produces:

A)both the zygote and the endosperm.
B)a reaction that keeps the plant from dying.
C)a double portion of endosperm.
D)nutrition for the seeD.
E)None of these is truE.

Question 13

One application of modified flower parts has been the development of cultivated flowers from wild ones such as with:

A)petunias.
B)poinsettias.
C)apples.
D)roses.
E)oranges.

Question 14

The process involving microspore division and a tough wall to protect the gametophyte leads to the production of what end product?

A)Eggs
B)Ovules
C)Pollen
D)Anthers
E)Stamens

Question 15

Flowers that have all four floral parts are said to be:

A)perfect.
B)complete.
C)whorled.
D)finite.
E)infinitE.

Question 16

A flower that lacks any one of its floral parts might be called:

A)misrepresented.
B)misinterpreted.
C)fatally flawed.
D)incomplete.
E)mostly completE.

Question 17

Which of the following is NOT a characteristic of the gametophyte stage of the flowering plant?

A)Haploid
B)Diploid
C)Gamete producing
D)Dependent on the sporophyte

Question 18

Imperfect conditions in flowers refer to which of the following?

A)Flower shape
B)Whether there are petals missing
C)Where the flower grows
D)How often the flower blooms
E)Whether sexual parts are missing

Question 19

The pistil of a flower is best described as:

A)a structure to defend against insects.
B)a single carpel or group of fused carpels.
C)a place where pollen is produced.
D)a grouping of filaments.
E)a place for sperm to be produced.

Question 20

A flower could best be described as which of the following?

A)Modified leaves
B)Modified petals
C)Modified stems
D)Primary buds
E)Incomplete leaves

Question 21

After papaya seeds germinate,the hypocotyl elongates and forms a hook.This hook straightens and pulls the cotyledon and the shoot tip of the seedling into the air.This method of embryonic shoot emergence is most similar to shoot emergence in which plant?

A)Garden bean
B)Onion
C)Pea
D)Corn

Question 22

It is possible for a plant to have flowers that are both incomplete and perfect.

Question 23

The primary role of the two sperm in the pollen is to:

A)release proteins for germination.
B)produce the pollen tube.
C)ensure that there will be fertilization of the egg and the central cell.
D)prevent embryo production.

Question 24

You are working with a scientist to classify new plants.You find a new plant that has flowers.You can conclude what about its reproduction?

A)It reproduces sexually.
B)It reproduces by apomixis.
C)It reproduces by somatic embryogenesis.
D)We do not have sufficient information about this plant to indicate how it reproduces.

Question 25

Female gametophytes develop specifically within what part of the flower?

A)Anther
B)Stamen
C)Stigma
D)Ovule
E)Central cell

Question 26

The main difference between the life cycle of mosses versus flowering plants is:

A)mosses only have one multicellular life cycle stage,whereas flowering plants have 2.
B)in moss the dominant life cycle stage is the gametophyte,whereas in flowering plants the dominant life cycle stage is the sporophyte.
C)moss sporophytes are photosynthetic and flowering plant sporophytes are not.
D)flowering plants undergo the alternation of generations and mosses do not.

Question 27

Plants with mutant ABA receptors are likely to have problems with:

A)seed dormancy.
B)endosperm formation.
C)pollen tube formation.
D)fertilization.

Question 28

The term hypocotyl refers to the portion of an embryonic stem located below the attachment of the cotyledons.

Question 29

Endosperm tissue arises by the fusion of a sperm nucleus with two nuclei of the:

A)male gametophyte.
B)female style.
C)ovule wall.
D)female egg.
E)female gametophyte central cell.

Question 30

Mosses and flowering plants differ in their dominant life cycle stages.Coleochaete is a multicellular algae that is considered to be the closest living relative of land plants.Coleochaete spend their entire life as a haploid organism.In what major way do these algae differ from mosses and flowering plants?

A)They have a more prominent sporophyte generation.
B)They do not undergo alternation of generations.
C)They do not undergo mitosis.
D)They do not undergo photosynthesis.

Question 31

Pollen germination refers to the process of:

A)pollen attachment to the stigmA.
B)pollen dispersal.
C)sperm development.
D)double fertilization.
E)development of the pollen tubE.

Question 32

Many seedless fruits are produced as genetically identical clones by asexual reproduction.Although advantageous in some ways,such genetically identical crops are more susceptible to _______ that could wipe out the entire crop.

A)drought
B)sexual reproduction
C)stress
D)disease

Question 33

In eudicots the endosperm is usually stored in which of the following seed parts?

A)Cotyledons
B)Embryos
C)Wall
D)Membrane
E)None of these is correct.

Question 34

In some plants a fruit is composed of the ovary and other plant parts.

Question 35

In the Arabidopsis cdka;1 mutant the central cell of the female gametophyte is not fertilized.What structure will not form in these mutant plants?

A)Pollen tube
B)Endosperm
C)Synergids
D)Egg cell

Question 36

Arabidopsis plants with a mutation in the flp1 gene produce pollen grains that have a smooth surface and are easily damaged.Disruption of what process likely causes this phenotype?

A)Sporopollenin deposition
B)Tube cell formation
C)Pollen germination
D)Double fertilization

Question 37

Liang and Mahadevan concluded that flowers bloom as a result of:

A)growth starting at the midrib running along the center of each petal.
B)differential growth rates of top and bottom petal surfaces.
C)greater growth on petal edges than in the petal center.
D)differential growth rates in stems.

Question 38

Seeds for desert plants often germinate once abscisic acid is washed away from the seed by water.In this scenario,abscisic acid is acting as a/an:

A)hormone that stimulates cell expansion.
B)germination-inhibiting compound.
C)suspensor.
D)hormone to induce the release of sugars from stored starch in the endosperm.

Question 39

One important aspect of self-incompatibility is to prevent:

A)expression of deleterious homozygous recessive genes.
B)genes that may prevent pollen germination.
C)factors that keep pollen from developing.
D)matings between different species of plants.
E)adherence of pollen to the stigma surfacE.

Question 40

Plants that are pollinated by insects probably do NOT produce allergy reaction in humans.

Question 41

In _______ the cotyledon remains underground as a seedling grows.

A)garden beans
B)onions
C)peas
D)corn

Question 42

You have learned that flowering plants have a dominant sporophyte and mosses have a dominant gametophyte.Having two unequal life cycle stages is called heteromorphy.Certain algae have a homomorphous relationship between their two life cycle stages.Homomorphy likely means:

A)the two life cycle stages are equal.
B)the organism is always a sporophyte.
C)the organism is always a gametophyte.
D)the organism does not undergo alternation of generations.

Question 43

In grass seeds,the ________ secretes digestive enzymes into the central endosperm to release sugars from stored starch.

A)cotyledon.
B)coleorhiza.
C)aleurone.
D)radicle.