Question 1

Some dioecious species have the XY genotype for male and XX for female.After double fertilization,what would be the genotypes of the embryos and endosperm nuclei?

Accepted Answer

A)  embryo X/endosperm XX or embryo Y/endosperm XY
B)  embryo XX/endosperm XX or embryo XY/endosperm XY
C)  embryo XY/endosperm XXX or embryo XX/endosperm XXY
D)  embryo XX/endosperm XXX or embryo XY/endosperm XXY

Question 2

The embryo of a grass seed is enclosed by two protective sheaths,a ________,which covers the young shoot,and a(n) ________,which covers the young root.

Accepted Answer

A)  cotyledon;radicle
B)  hypocotyl;epicotyl
C)  coleoptile;coleorhiza
D)  scutellum;coleoptile

Question 3

The floral parts are arranged in concentric whorls.Which of the following sequences of floral parts is correct from the center to periphery of the receptacle?

Accepted Answer

A)  stamens,corolla,calyx,carpels
B)  carpels,stamens,corolla,calyx
C)  calyx,corolla,stamens,carpels
D)  calyx,stamens,carpels,corolla

Question 4

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 produces clones of the parent plant.

Question 5

A fruit that develops from many separate carpels of one flower is referred as

Accepted Answer

A)  a simple fruit.
B)  an aggregate fruit.
C)  a multiple fruit.
D)  an accessory fruit.

Question 6

A fruit develops from an

Accepted Answer

A)  ovum.
B)  embryo.
C)  ovule.
D)  ovary.

Question 7

The following questions refer to the diagram of an embryo sac of an angiosperm shown in Figure 30.1.
  Figure 30.1
-Based on Figure 30.1,which cell(s) guide(s) the pollen tube to the egg cell?

Accepted Answer

A)  A
B)  B
C)  C
D)  D

Question 8

In a typical dicot ovule,a surviving megaspore divided by ________ consecutive mitotic divisions without cytokinesis results in ________ nuclei.

Accepted Answer

A)  2;6
B)  3;8
C)  3;12
D)  4;16
E)  1;1

Question 9

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)  There are haploid,diploid,and triploid cells.

Question 10

Biofuels are mainly produced by

Accepted Answer

A)  the breakdown of cell wall biopolymers into sugars that can be fermented.
B)  plants that convert hemicellulose into gasoline.
C)  the genetic engineering of ethanol-generating genes into plants.
D)  transgenic crops that have cell walls containing ethylene.

Question 11

In the process of evolution,________ in the life cycle became reduced in size and completely dependent on ________ for nutrients.

Accepted Answer

A)  gametophyte;sporophyte
B)  gametophyte;zygote
C)  sporophyte;flower
D)  sporophyte;gametophyte

Question 12

The following questions refer to the diagram of an embryo sac of an angiosperm shown in Figure 30.1.
  Figure 30.1
-Based on Figure 30.1,which cell(s) become(s) the triploid endosperm?

Accepted Answer

A)  A
B)  B
C)  C
D)  D

Question 13

During the process of evolution of an angiosperm,

Accepted Answer

A)  the sporophyte became larger,more complicated,and short lived.
B)  the sporophyte became reduced,smaller,simpler,and long lived.
C)  the gametophyte became reduced,smaller,simpler,and short lived.
D)  the gametophyte became larger,simpler,and long lived.
E)  the sporophyte became reduced,smaller,and long lived.

Question 14

In vitro plant cultures produce

Accepted Answer

A)  unidentical plants.
B)  the possibility to regenerate genetically modified plants.
C)  plants at a much slower pace.
D)  plants with high vigor.

Question 15

Callus is a group of

Accepted Answer

A)  ground tissue.
B)  vascular tissue.
C)  meristematic tissue.
D)  undifferentiated cells.

Question 16

In which of the following pairs are the two terms equivalent?

Accepted Answer

A)  ovule-egg
B)  embryo sac-female gametophyte
C)  endosperm-male gametophyte
D)  seed-zygote

Question 17

Cassava is a ________ crop that has been modified by biotechnology experiments.

Accepted Answer

A)  shoot
B)  root
C)  rhizome
D)  leaf

Question 18

Which of the following is the 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

Question 19

Seeds develop from

Accepted Answer

A)  receptacles.
B)  fertilized eggs.
C)  an ovary.
D)  ovules.

Question 20

Which of the following plants is correctly matched with its fruit type?

Accepted Answer

A)  peas-aggregate
B)  raspberry-simple
C)  beans-simple
D)  pineapple-accessory

Exam 30: Reproduction and Domestication of Flowering Plants

Which of the following is true about vegetative reproduction?

Correct AnswerverifiedShow Answer

In the process of evolution,________ in the life cycle became reduced in size and completely dependent on ________ for nutrients.

Correct AnswerverifiedShow Answer

A fruit that develops from many separate carpels of one flower is referred as

Correct AnswerverifiedShow Answer

Some dioecious species have the XY genotype for male and XX for female.After double fertilization,what would be the genotypes of the embryos and endosperm nuclei?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

During the process of evolution of an angiosperm,

Correct AnswerverifiedShow Answer

A fruit develops from an

Correct AnswerverifiedShow Answer

Callus is a group of

Correct AnswerverifiedShow Answer

The following questions refer to the diagram of an embryo sac of an angiosperm shown in Figure 30.1. Figure 30.1 -Based on Figure 30.1,which cell(s) guide(s) the pollen tube to the egg cell?

Correct AnswerverifiedShow Answer

In vitro plant cultures produce

Correct AnswerverifiedShow Answer

Cassava is a ________ crop that has been modified by biotechnology experiments.

Correct AnswerverifiedShow Answer

Which of the following plants is correctly matched with its fruit type?

Correct AnswerverifiedShow Answer

The embryo of a grass seed is enclosed by two protective sheaths,a ________,which covers the young shoot,and a(n) ________,which covers the young root.

Correct AnswerverifiedShow Answer

In a typical dicot ovule,a surviving megaspore divided by ________ consecutive mitotic divisions without cytokinesis results in ________ nuclei.

Correct AnswerverifiedShow Answer

The floral parts are arranged in concentric whorls.Which of the following sequences of floral parts is correct from the center to periphery of the receptacle?

Correct AnswerverifiedShow Answer

The following questions refer to the diagram of an embryo sac of an angiosperm shown in Figure 30.1. Figure 30.1 -Based on Figure 30.1,which cell(s) become(s) the triploid endosperm?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Biofuels are mainly produced by

Correct AnswerverifiedShow Answer

In which of the following pairs are the two terms equivalent?

Correct AnswerverifiedShow Answer

Seeds develop from

Correct AnswerverifiedShow Answer

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In the process of evolution, in the life cycle became reduced in size and completely dependent on for nutrients.

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The embryo of a grass seed is enclosed by two protective sheaths,a ,which covers the young shoot,and a(n) ,which covers the young root.

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In a typical dicot ovule,a surviving megaspore divided by consecutive mitotic divisions without cytokinesis results in nuclei.

Correct Answer
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