Question 1

One of the new technologies developed from tissue culture and genetic engineering is plant hybridization.

Accepted Answer

A) True 
 B)False

Question 2

Fertilization in flowering plants occurs

Accepted Answer

A)   on the stigma.
B)   in the style.
C)   in the ovule.
D)   in the anther.
E)   in the endosperm.

Question 3

When you pick a bouquet of anther-less flowers,you have picked

Accepted Answer

A)   male gametophytes retained within the body of sporophytes.
B)   female gametophytes retained within the body of sporophytes.
C)   sporophytes retained within the body of male gametophytes.
D)   sporophytes retained within the body of female gametophytes.
E)   male gametophytes retained within the body of female gametophytes.

Question 4

Which of the following parts of a plant embryo grows downward?

Accepted Answer

A)   plumule
B)   epicotyl
C)   seed coat
D)   radicle
E)   shoot

Question 5

Which modern technology is not used in the creation of transgenic plants?

Accepted Answer

A)   protoplast regeneration
B)   high voltage electric pulses
C)   a gene gun
D)   plant hybridization
E)   a bacterial plasmid

Question 6

In asexual reproduction in plants,there is only one parent,instead of two.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following is not an advantage of genetically engineered plants?

Accepted Answer

A)   decreased yield
B)   herbicide resistance
C)   salt tolerance
D)   drought tolerance
E)   disease protection

Question 8

Which of the following plant hormones prevents senescence and can initiate leaf growth?

Accepted Answer

A)   indoleacetic acid
B)   gibberellin
C)   cytokinin
D)   abscisic acid
E)   ethylene

Question 9

Strawberry plants do not produce seeds that are used for next year's crop.How are strawberry plants propagated?

Accepted Answer

A)   from flowers
B)   from pollen
C)   from the nodes of stolons
D)   from tissue culture
E)   from protoplasts

Question 10

A corn kernel is classified as a seed.

Accepted Answer

A) True 
 B)False

Question 11

From the discussion of long-day and short-day plants,it is obvious that "day-neutral" plants

Accepted Answer

A)   flower when the night is shorter than a critical length.
B)   flower when the night is longer than a critical length.
C)   are not dependent on the length of the night or day for flowering.
D)   have short stems or long stems depending on the photoperiod.
E)   have flowers that only open during the daytime.

Question 12

What would be the outcome of applying ethylene to a bushel of oranges?

Accepted Answer

A)   Ethylene stimulates cellulase which will hydrolyze the cellulose in plant cell walls. This will cause the fruit to ripen.
B)   Ethylene will initiate and maintain seed dormancy as well as bringing about the closure of the stomata.
C)   Ethylene stimulates cellulase which will hydrolyze the proteins in plant cell walls. This will cause the fruit to ripen.
D)   Ethylene stimulates cellulase which will hydrolyze the lipids in plant cell walls. This will cause the fruit to ripen.
E)   Ethylene stimulates cell division which will cause the fruit to ripen.

Question 13

If digestive enzymes are used to remove the plant cell wall,the naked plant cell that remains is called a

Accepted Answer

A)   plastid.
B)   plantlet.
C)   callus.
D)   protoplast.
E)   phytoplast.

Question 14

Which of the following is NOT a part of a flower?

Accepted Answer

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

Question 15

Which of the following statements is NOT correct about flowering plants?

Accepted Answer

A)   A sperm nucleus combines with one polar nucleus to form the endosperm.
B)   A sperm nucleus combines with the egg nucleus to eventually form the embryo.
C)   A pollen grain may be carried to the stigma of the ovary by the wind.
D)   A pollen tube grows down the style.
E)   They exhibit double fertilization.

Question 16

Which plant hormone will act as an inhibitor of growth and maintains dormancy?

Accepted Answer

A)   auxin
B)   indoleacetic acid
C)   gibberellin
D)   cytokinin
E)   abscisic acid

Question 17

Which action would cause a long-day plant to flower?

Accepted Answer

A)   Interrupt the day with a period of darkness.
B)   Interrupt a long night with a flash of light.
C)   Give the plant some phytochrome.
D)   Allow an insect to pollinate the plant.
E)   Keep the plant in the dark.

Question 18

Which of the following is the correct sequence for the germination of the eudicot seed?

Accepted Answer

A)   The two cotyledons have absorbed the endosperm and supply the nutrients to the embryo. As the embryo emerges from the soil it consumes the nutrients and develops the shoot. The hypocotyl becomes part of the stem and the radicle develops into the roots.
B)   The cotyledon was absorbed by the endosperm and supplies the nutrients to the embryo. As the embryo emerges from the soil it consumes the nutrients and develops the shoot. The hypocotyl becomes part of the stem and the radicle develops into the roots.
C)   The two cotyledons have absorbed the endosperm and supply the nutrients to the embryo. As the embryo emerges from the soil it consumes the nutrients and develops the shoot. The radicle becomes part of the stem and the hypocotyl develops into the roots.
D)   The pericarp has absorbed the endosperm and supply the nutrients to the embryo. As the embryo emerges from the soil it consumes the nutrients and develops the shoot. The hypocotyl becomes part of the stem and the radicle develops into the roots.
E)   The two cotyledons have absorbed the endosperm and supply the nutrients to the embryo. As the embryo emerges from the soil it consumes the nutrients and develops the shoot. The plumule and the radicle push through the coleorhiza during germination.

Question 19

Which of the following is NOT a component of the carpel of a flower?

Accepted Answer

A)   anthers
B)   stigma
C)   style
D)   ovary
E)   ovule

Question 20

Which of the following is NOT an advantage of tissue culture?

Accepted Answer

A)   Plant tissue can be used to produce medicines such as digitoxin and other products for the treatment of human disease.
B)   Tissue culture allows the production of healthier plant varieties.
C)   New plant varieties can be formed by using somatic embryos.
D)   The use of transgenic plants has led to a serious decline in crop production throughout the world.
E)   Engineered plants are resistant to herbicides and disease.

Exam 10: Plant Reproduction and Responses

Fertilization in flowering plants occurs

Correct AnswerverifiedShow Answer

Which plant hormone will act as an inhibitor of growth and maintains dormancy?

Correct AnswerverifiedShow Answer

One of the new technologies developed from tissue culture and genetic engineering is plant hybridization.

Correct AnswerverifiedShow Answer

In asexual reproduction in plants,there is only one parent,instead of two.

Correct AnswerverifiedShow Answer

When you pick a bouquet of anther-less flowers,you have picked

Correct AnswerverifiedShow Answer

Which of the following is NOT a part of a flower?

Correct AnswerverifiedShow Answer

Which of the following parts of a plant embryo grows downward?

Correct AnswerverifiedShow Answer

Which modern technology is not used in the creation of transgenic plants?

Correct AnswerverifiedShow Answer

Which of the following statements is NOT correct about flowering plants?

Correct AnswerverifiedShow Answer

What would be the outcome of applying ethylene to a bushel of oranges?

Correct AnswerverifiedShow Answer

Which of the following plant hormones prevents senescence and can initiate leaf growth?

Correct AnswerverifiedShow Answer

Which action would cause a long-day plant to flower?

Correct AnswerverifiedShow Answer

If digestive enzymes are used to remove the plant cell wall,the naked plant cell that remains is called a

Correct AnswerverifiedShow Answer

Which of the following is the correct sequence for the germination of the eudicot seed?

Correct AnswerverifiedShow Answer

Which of the following is NOT a component of the carpel of a flower?

Correct AnswerverifiedShow Answer

From the discussion of long-day and short-day plants,it is obvious that "day-neutral" plants

Correct AnswerverifiedShow Answer

A corn kernel is classified as a seed.

Correct AnswerverifiedShow Answer

Which of the following is not an advantage of genetically engineered plants?

Correct AnswerverifiedShow Answer

Which of the following is NOT an advantage of tissue culture?

Correct AnswerverifiedShow Answer

Strawberry plants do not produce seeds that are used for next year's crop.How are strawberry plants propagated?

Correct AnswerverifiedShow Answer

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