Question 1

Which of the following best describes the ploidy level of a fertilized embryo sac?

Accepted Answer

A)   All cells are diploid.
B)   All cells are triploid.
C)   All cells are polyploid.
D)   The ploidy level varies among species.
E)   There are haploid, diploid, and triploid cells.

Question 2

A perfect flower is fertile, but may be either complete or incomplete. Which of the following correctly describes a perfect flower?

Accepted Answer

A)   It has no sepals.
B)   It has fused carpels.
C)   It is on a dioecious plant.
D)   It has no endosperm.
E)   It has both stamens and carpels.

Question 3

You are studying a plant from the Amazon rain forest that shows strong self-incompatibility. To characterize this reproductive mechanism, you would look for

Accepted Answer

A)   ribonuclease (RNAase)  activity in stigma cells.
B)   RNA in the plants.
C)   pollen grains with very thick walls.
D)   carpels that cannot produce eggs by meiosis.
E)   systems of wind, but not insect, pollination.

Question 4

Genetic incompatibility does not affect the

Accepted Answer

A)   attraction of a suitable insect pollinator.
B)   germination of the pollen on the stigma.
C)   growth of the pollen tube in the style.
D)   membrane permeability of cells.
E)   different individuals of the same species.

Question 5

Microsporangia in flowering plants are located in the

Accepted Answer

A)   stamen.
B)   carpel.
C)   petals.
D)   sepals.
E)   receptacle.

Question 6

Which of the following is true about vegetative reproduction?

Accepted Answer

A)   It involves both meiosis and mitosis to produce haploid and diploid cells.
B)   It produces vegetables and not fruits.
C)   It involves meiosis only.
D)   It can lead to genetically altered forms of the species.
E)   It produces clones of the parent plant.

Question 7

Which of the following plant/animal interactions is not a mutually beneficial (mutualistic) relationship?

Accepted Answer

A)   honeybees gathering pollen from apple blossoms
B)   butterflies gathering nectar from lily blossoms
C)   beetles feeding on magnolia blossoms
D)   ants protecting and feeding from nectaries of Acacia
E)   wasps such as Campsoscolia ciliata transferring pollen in orchid flowers

Question 8

Which of the following metabolic processes is most likely to still be occurring at low levels in a fully mature, viable, dry seed?

Accepted Answer

A)   photosynthesis
B)   respiration
C)   fatty acid synthesis
D)   protein synthesis
E)   DNA replication

Question 9

Where and by which process are sperm cells formed in plants?

Accepted Answer

A)   meiosis in pollen grains
B)   meiosis in anthers
C)   mitosis in male gametophyte pollen tube
D)   mitosis in the micropyle
E)   mitosis in the embryo sac

Question 10

Where does meiosis occur in flowering plants?

Accepted Answer

A)   megasporocyte
B)   microsporocyte
C)   endosperm
D)   pollen tube
E)   megasporocyte and microsporocyte

Question 11

What is typically the result of double fertilization in angiosperms?

Accepted Answer

A)   The endosperm develops into a diploid nutrient tissue.
B)   A triploid zygote is formed.
C)   Both a diploid embryo and triploid endosperm are formed.
D)   Two embryos develop in every seed.
E)   The antipodal cells develop into the seed coat.

Question 12

When comparing the mature seeds of a pine tree to an apple tree, which of the following is a correct statement?

Accepted Answer

A)   The developmental sequences postfertilization are identical.
B)   Both contain triploid tissue.
C)   The nutritive tissues are both haploid.
D)   Only the apple seed has a diploid seed coat.
E)   Both contain haploid and diploid tissues.

Question 13

Which of the following is a correct sequence of processes that takes place when a flowering plant reproduces?

Accepted Answer

A)   meiosis → fertilization → ovulation → germination
B)   fertilization → meiosis → nuclear fusion → formation of embryo and endosperm
C)   meiosis → pollination → nuclear fusion → formation of embryo and endosperm
D)   growth of pollen tube → pollination → germination → fertilization
E)   meiosis → mitosis → nuclear fusion → pollen

Question 14

In some angiosperms, other floral parts contribute to what is commonly called the fruit. Which of the following fruits is derived mostly from an enlarged receptacle?

Accepted Answer

A)   pea
B)   raspberry
C)   apple
D)   pineapple
E)   peach

Question 15

Which of the following statements is true of protoplast fusion?

Accepted Answer

A)   It occurs when the second sperm nucleus fuses with the polar nuclei in the embryo sac.
B)   It can be used to form new plant varieties by combining genomes from two plants.
C)   It is used to develop gene banks to preserve genetic variability.
D)   It is the method of test-tube cloning that produces whole plants from callus.
E)   It occurs within a callus that is developing in tissue culture.

Question 16

Based on studies of plant evolution and anatomy, which flower part is least likely to have evolved from a leaf?

Accepted Answer

A)   stamen
B)   carpel
C)   petals
D)   sepals
E)   receptacle

Question 17

A seed develops from

Accepted Answer

A)   an ovum.
B)   a pollen grain.
C)   an ovule.
D)   an ovary.
E)   an embryo.

Question 18

Fruits develop from

Accepted Answer

A)   microsporangia.
B)   receptacles.
C)   fertilized eggs.
D)   ovaries.
E)   ovules.

Question 19

Which of the following is true in plants?

Accepted Answer

A)   Mitosis occurs in gametophytes to produce gametes.
B)   Meiosis occurs in sporophytes to produce spores.
C)   The gametophyte is within the flower in angiosperms.
D)   Mitosis occurs in gametophytes to produce gametes, and meiosis occurs in sporophytes to produce spores.
E)   Mitosis occurs in gametophytes to produce gametes, meiosis occurs in sporophytes to produce spores, and the gametophyte is within the flower in angiosperms.

Question 20

What is the difference between pollination and fertilization in flowering plants?

Accepted Answer

A)   Fertilization precedes pollination.
B)   Pollination easily occurs between plants of different species, whereas fertilization is within a species.
C)   Pollen is formed within megasporangia so that male and female gametes are near each other.
D)   Pollination is the transfer of pollen from an anther to a stigma. Fertilization is the fusion of haploid nuclei.
E)   If fertilization occurs, pollination is unnecessary.

Exam 38: Angiosperm Reproduction and Biotechnology

In some angiosperms, other floral parts contribute to what is commonly called the fruit. Which of the following fruits is derived mostly from an enlarged receptacle?

Correct AnswerverifiedShow Answer

Which of the following plant/animal interactions is not a mutually beneficial (mutualistic) relationship?

Correct AnswerverifiedShow Answer

Which of the following best describes the ploidy level of a fertilized embryo sac?

Correct AnswerverifiedShow Answer

Based on studies of plant evolution and anatomy, which flower part is least likely to have evolved from a leaf?

Correct AnswerverifiedShow Answer

Which of the following is a correct sequence of processes that takes place when a flowering plant reproduces?

Correct AnswerverifiedShow Answer

You are studying a plant from the Amazon rain forest that shows strong self-incompatibility. To characterize this reproductive mechanism, you would look for

Correct AnswerverifiedShow Answer

Where does meiosis occur in flowering plants?

Correct AnswerverifiedShow Answer

Which of the following is true about vegetative reproduction?

Correct AnswerverifiedShow Answer

Which of the following metabolic processes is most likely to still be occurring at low levels in a fully mature, viable, dry seed?

Correct AnswerverifiedShow Answer

A seed develops from

Correct AnswerverifiedShow Answer

What is the difference between pollination and fertilization in flowering plants?

Correct AnswerverifiedShow Answer

Where and by which process are sperm cells formed in plants?

Correct AnswerverifiedShow Answer

Fruits develop from

Correct AnswerverifiedShow Answer

When comparing the mature seeds of a pine tree to an apple tree, which of the following is a correct statement?

Correct AnswerverifiedShow Answer

What is typically the result of double fertilization in angiosperms?

Correct AnswerverifiedShow Answer

Genetic incompatibility does not affect the

Correct AnswerverifiedShow Answer

Which of the following is true in plants?

Correct AnswerverifiedShow Answer

Microsporangia in flowering plants are located in the

Correct AnswerverifiedShow Answer

A perfect flower is fertile, but may be either complete or incomplete. Which of the following correctly describes a perfect flower?

Correct AnswerverifiedShow Answer

Which of the following statements is true of protoplast fusion?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified