BIOL 271 Exam 2 Questions with
Correct Answers | Latest Update |
Exam Prep
1. If a perfect flower is one that contains both the stamens and pistils necessary
to reproduce without another plant (bisexual), what do you suppose an
imperfect flower is?
o A flower that doesn’t want to reproduce though it has the necessary
pistils and stamens to do so.
o A flower that has deformed stamens and pistils that don’t carry out
their proper function.
o A flower whose stamens and pistils haven’t fully grown yet and
therefore can’t reproduce.
o A flower that’s missing either the stamens or carpels/pistils. ✔
2. Describe the relationship between carpels and the overall structure of the
pistil in flowering plants.
o Carpels are the male reproductive parts of the flower.
o Carpels are the outermost parts of the flower.
o Carpels are separate from the pistil and serve only to support the
flower.
o Carpels are the individual units that make up the pistil, which is
the female reproductive part of the flower. ✔
3. If a botanist discovers a new flower species with a unique placentation
pattern, what implications might this have for its reproductive biology?
o It would imply that the flower is only pollinated by insects.
o It would mean the flower is a hybrid of two species.
o It would indicate that the flower produces no seeds.
, o Placentation affects how ovules are arranged within the ovary,
which can influence seed development and dispersal strategies. ✔
4. A flower that lacks one or more of the four basic floral parts (sepals, petals,
stamens, carpels) is called:
o Perfect
o Imperfect
o Incomplete ✔
o Complete
5. What is a petiolule?
o A structure that supports the petals.
o A type of flower symmetry.
o The part of the flower that produces pollen.
o A small stalk that attaches a leaflet to the main leaf stalk (rachis)
in a compound leaf. ✔
6. Describe the significance of epigynous flowers in plant reproductive
biology.
o Epigynous flowers are always symmetrical in shape.
o Epigynous flowers do not produce seeds.
o Epigynous flowers are characterized by having only male
reproductive organs.
o Epigynous flowers have an ovary positioned below the attachment
of other floral parts (superior ovary?), actually epigynous means
ovary inferior, below the attachment of sepals, petals, stamens.
The image said "above" - correction: In epigynous flowers, the
ovary is inferior (below the other floral parts), which can
influence pollination and fruit development. ✔
7. What distinguishes a spike from other types of flower arrangements?
o A spike has branched flowers.
, o Flowers in a spike are attached by pedicels.
o A spike is characterized by its unbranched structure and sessile
(directly attached) flowers along the central axis. ✔
o A spike has flowers only at the tip.
8. A flower that has both stamens and carpels is known as:
o Imperfect
o Perfect (bisexual) ✔
o Incomplete
o Staminate
9. Which term describes a flower that lacks petals?
o Complete
o Apetalous ✔
o Perfect
o Syncarpous
10.The female reproductive part of a flower that consists of stigma, style, and
ovary is the:
o Stamen
o Pistil (carpel) ✔
o Receptacle
o Filament
11.In a compound leaf, the main stalk to which leaflets are attached is called
the:
o Petiole
o Rachis ✔
o Petiolule
o Stipule
, 12.A flower with the ovary positioned above the attachment point of sepals,
petals, and stamens is termed:
o Epigynous
o Hypogynous ✔
o Perigynous
o Superior (hypogynous is correct)
13.An inflorescence in which the main axis is unbranched and flowers are
borne on pedicels of equal length, all arising from the same point at the tip,
is called an:
o Spike
o Raceme
o Umbel ✔
o Panicle
14.Which of the following is an example of a fleshy fruit?
o Achene
o Berry (e.g., tomato, grape) ✔
o Nut
o Grain
15.The fusion of male gamete with female gamete in angiosperms results in a:
o Zygote (diploid) ✔
o Endosperm (triploid)
o Polar nucleus
o Synergid
16.Double fertilization in angiosperms produces:
o Two zygotes
o A zygote and a polar nucleus
Correct Answers | Latest Update |
Exam Prep
1. If a perfect flower is one that contains both the stamens and pistils necessary
to reproduce without another plant (bisexual), what do you suppose an
imperfect flower is?
o A flower that doesn’t want to reproduce though it has the necessary
pistils and stamens to do so.
o A flower that has deformed stamens and pistils that don’t carry out
their proper function.
o A flower whose stamens and pistils haven’t fully grown yet and
therefore can’t reproduce.
o A flower that’s missing either the stamens or carpels/pistils. ✔
2. Describe the relationship between carpels and the overall structure of the
pistil in flowering plants.
o Carpels are the male reproductive parts of the flower.
o Carpels are the outermost parts of the flower.
o Carpels are separate from the pistil and serve only to support the
flower.
o Carpels are the individual units that make up the pistil, which is
the female reproductive part of the flower. ✔
3. If a botanist discovers a new flower species with a unique placentation
pattern, what implications might this have for its reproductive biology?
o It would imply that the flower is only pollinated by insects.
o It would mean the flower is a hybrid of two species.
o It would indicate that the flower produces no seeds.
, o Placentation affects how ovules are arranged within the ovary,
which can influence seed development and dispersal strategies. ✔
4. A flower that lacks one or more of the four basic floral parts (sepals, petals,
stamens, carpels) is called:
o Perfect
o Imperfect
o Incomplete ✔
o Complete
5. What is a petiolule?
o A structure that supports the petals.
o A type of flower symmetry.
o The part of the flower that produces pollen.
o A small stalk that attaches a leaflet to the main leaf stalk (rachis)
in a compound leaf. ✔
6. Describe the significance of epigynous flowers in plant reproductive
biology.
o Epigynous flowers are always symmetrical in shape.
o Epigynous flowers do not produce seeds.
o Epigynous flowers are characterized by having only male
reproductive organs.
o Epigynous flowers have an ovary positioned below the attachment
of other floral parts (superior ovary?), actually epigynous means
ovary inferior, below the attachment of sepals, petals, stamens.
The image said "above" - correction: In epigynous flowers, the
ovary is inferior (below the other floral parts), which can
influence pollination and fruit development. ✔
7. What distinguishes a spike from other types of flower arrangements?
o A spike has branched flowers.
, o Flowers in a spike are attached by pedicels.
o A spike is characterized by its unbranched structure and sessile
(directly attached) flowers along the central axis. ✔
o A spike has flowers only at the tip.
8. A flower that has both stamens and carpels is known as:
o Imperfect
o Perfect (bisexual) ✔
o Incomplete
o Staminate
9. Which term describes a flower that lacks petals?
o Complete
o Apetalous ✔
o Perfect
o Syncarpous
10.The female reproductive part of a flower that consists of stigma, style, and
ovary is the:
o Stamen
o Pistil (carpel) ✔
o Receptacle
o Filament
11.In a compound leaf, the main stalk to which leaflets are attached is called
the:
o Petiole
o Rachis ✔
o Petiolule
o Stipule
, 12.A flower with the ovary positioned above the attachment point of sepals,
petals, and stamens is termed:
o Epigynous
o Hypogynous ✔
o Perigynous
o Superior (hypogynous is correct)
13.An inflorescence in which the main axis is unbranched and flowers are
borne on pedicels of equal length, all arising from the same point at the tip,
is called an:
o Spike
o Raceme
o Umbel ✔
o Panicle
14.Which of the following is an example of a fleshy fruit?
o Achene
o Berry (e.g., tomato, grape) ✔
o Nut
o Grain
15.The fusion of male gamete with female gamete in angiosperms results in a:
o Zygote (diploid) ✔
o Endosperm (triploid)
o Polar nucleus
o Synergid
16.Double fertilization in angiosperms produces:
o Two zygotes
o A zygote and a polar nucleus
