Question 1

Double fertilization reduces the energetic cost of reproduction.In gymnosperms,the female gametophyte stockpiles food for the embryo in advance of fertilization.The investment is wasted if no zygote ever forms.In contrast,double fertilization ensures that an angiosperm devotes energy to the zygote only if sperm fertilizes egg.What do the sperm fertilize in a double fertilization?

Accepted Answer

A)  the egg
B)  two polar nuclei
C)  the egg and two polar nuclei
D)  the egg and zygote
E)  the zygoteF) A) and E)
G) A) and D)

Question 2

A(n) ______ is a chemical synthesized in small quantities in one part of an organism and transported to another,where a target cell is affected.

Accepted Answer

A)  enzyme
B)  megaspore
C)  microspore
D)  hormone
E)  gametophyteF) A) and E)
G) A) and D)

Question 3

The number of similar anatomical parts called whorls that make up a flower is

Accepted Answer

A)  one.
B)  two.
C)  three.
D)  four.
E)  fivE.F) C) and D)
G) A) and D)

Question 4

In plants,molecules that perceive the quality and quantity of light are

Accepted Answer

A)  chemoreceptors.
B)  photoreceptors.
C)  mechanoreceptors.
D)  pressure receptors.
E)  gradient receptors.F) D) and E)
G) A) and C)

Question 5

Global climate change has caused historically-tropical diseases to exist at higher latitudes.With new selection pressures,plants are likely to

Accepted Answer

A)  carry out vegetative reproduction.
B)  produce genetically-varied offspring.
C)  form new individuals by mitotic cell division.
D)  form clones.
E)  change the environment.F) A) and B)
G) A) and C)

Question 6

Whorl two of a flower is made up of

Accepted Answer

A)  the petals.
B)  the female reproductive parts of a flower.
C)  the male reproductive parts of a flower.
D)  the sepals.
E)  the stem region.F) B) and D)
G) None of the above

Question 7

The egg-bearing structure of a flower is the

Accepted Answer

A)  stigmA.
B)  ovary.
C)  style.
D)  anther.
E)  sepal.F) All of the above
G) C) and E)

Question 8

The main pollinators of red flowers are

Accepted Answer

A)  beetles.
B)  bees.
C)  birds.
D)  moths.
E)  bats.F) B) and D)
G) A) and B)

Question 9

The size of a plant's seeds reflects an evolutionary trade-off.Large,heavy seeds contain ample nutrient reserves to fuel seedling growth but may not travel far.Small seeds,on the other hand,store limited nutrients but tend to disperse far and wide.The crops that humans cultivate typically have larger seeds than do their wild ancestors.Why would humans primarily cultivate plants with larger seeds?

Accepted Answer

A)  The plants with smaller seeds can already spread easily.
B)  Smaller seeds are harder to collect.
C)  The plants with larger seeds grow better with added fertilizer.
D)  We eat the seeds.
E)  We cannot grow plants with smaller seeds.F) A) and C)
G) B) and D)

Question 10

Where are floral megaspores produced?

Accepted Answer

A)  anther
B)  ovule
C)  corolla
D)  sepal
E)  stigmaF) A) and B)
G) A) and C)

Question 11

A sweet substance used by many angiosperms to lure pollinators is

Accepted Answer

A)  pollen.
B)  honey.
C)  "honey dew."
D)  phloem sap.
E)  nectar.F) B) and E)
G) A) and E)

Question 12

Angiosperms are the most recent group of plants to evolve,yet they can live in a greater diversity of habitats than any other group of plants.Why are angiosperms able to survive in deserts,at the top of mountains,and in marsh habitats?

Accepted Answer

A)  Fertilization is possible without water.
B)  Embryos can remain dormant until conditions are right for germination.
C)  Flowers attract animals to spread pollen.
D)  Fruits attract animals to spread seeds.
E)  All answers are correct.F) C) and D)
G) A) and D)

Question 13

Which of the following is a factor in the development of flowering plants?

Accepted Answer

A)  All answers are correct.
B)  insects
C)  hormones
D)  gravity
E)  seasonal changes in temperature and lightF) A) and B)
G) D) and E)

Question 14

Seedless watermelons come from seeds that are triploid and therefore do not develop properly and are simply soft hulls that are easy to chew.

Accepted Answer

A) True 
 B)False

Question 15

The whorl of a flower that consists of the female reproductive parts is the

Accepted Answer

A)  carpel.
B)  calyx.
C)  stamen.
D)  stigma.
E)  corolla.F) D) and E)
G) A) and D)

Question 16

From which structures do fruits arise?

Accepted Answer

A)  flowers
B)  leaves
C)  stems
D)  roots
E)  apical meristemsF) B) and E)
G) A) and E)

Question 17

A portion of a flower that is a green leaf-like structure that protects the inner floral parts is the

Accepted Answer

A)  stigmA.
B)  style.
C)  sepal.
D)  anther.
E)  ovary.F) A) and B)
G) B) and D)

Question 18

You plant a seed in a pot containing soil,and then add water and place the pot under a light.After the seedling emerged,complete with two green leaves,the carbon dioxide levels decreased in the closed chamber.Which of the following is true of this plant?

Accepted Answer

A)  It is a diploid monocot.
B)  It is a diploid eudicot.
C)  It is a triploid eudicot.
D)  It is a triploid monocot.
E)  It is polyploid monocot or eudicot.F) B) and D)
G) D) and E)

Question 19

You plant a seed in a pot containing soil,and then add water and place the pot under a light.After the seedling emerged,complete with two green leaves,the carbon dioxide levels decreased in the closed chamber.The developing seedling was using which of the following as a source of energy during this time?

Accepted Answer

A)  water from the soil
B)  starch from the seed
C)  sugars from the soil
D)  nutrients from the soil
E)  lightF) None of the above
G) A) and E)

Question 20

Which of the following is NOT a variable in the reproduction of flowering plants?

Accepted Answer

A)  hereditary information passed asexually
B)  hereditary information passed sexually
C)  hormones
D)  gravity
E)  seasonal changes in temperature and lightF) B) and D)
G) B) and C)

Exam 22: Reproduction and Development of Flowering Plants

A sweet substance used by many angiosperms to lure pollinators is

Correct Answer
verified

Seedless watermelons come from seeds that are triploid and therefore do not develop properly and are simply soft hulls that are easy to chew.

Correct Answer
verified

From which structures do fruits arise?

Correct Answer
verified

Correct Answer
verified

In plants,molecules that perceive the quality and quantity of light are

Correct Answer
verified

The main pollinators of red flowers are

Correct Answer
verified

The number of similar anatomical parts called whorls that make up a flower is

Correct Answer
verified

Correct Answer
verified

The egg-bearing structure of a flower is the

Correct Answer
verified

Where are floral megaspores produced?

Correct Answer
verified

Angiosperms are the most recent group of plants to evolve,yet they can live in a greater diversity of habitats than any other group of plants.Why are angiosperms able to survive in deserts,at the top of mountains,and in marsh habitats?

Correct Answer
verified

A portion of a flower that is a green leaf-like structure that protects the inner floral parts is the

Correct Answer
verified

Which of the following is a factor in the development of flowering plants?

Correct Answer
verified

Which of the following is NOT a variable in the reproduction of flowering plants?

Correct Answer
verified

A(n) ______ is a chemical synthesized in small quantities in one part of an organism and transported to another,where a target cell is affected.

Correct Answer
verified

Global climate change has caused historically-tropical diseases to exist at higher latitudes.With new selection pressures,plants are likely to

Correct Answer
verified

Correct Answer
verified

You plant a seed in a pot containing soil,and then add water and place the pot under a light.After the seedling emerged,complete with two green leaves,the carbon dioxide levels decreased in the closed chamber.Which of the following is true of this plant?

Correct Answer
verified

The whorl of a flower that consists of the female reproductive parts is the

Correct Answer
verified

Whorl two of a flower is made up of

Correct Answer
verified

Exam 22: Reproduction and Development of Flowering Plants

A sweet substance used by many angiosperms to lure pollinators is

Correct AnswerverifiedShow Answer

Seedless watermelons come from seeds that are triploid and therefore do not develop properly and are simply soft hulls that are easy to chew.

Correct AnswerverifiedShow Answer

From which structures do fruits arise?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

In plants,molecules that perceive the quality and quantity of light are

Correct AnswerverifiedShow Answer

The main pollinators of red flowers are

Correct AnswerverifiedShow Answer

The number of similar anatomical parts called whorls that make up a flower is

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The egg-bearing structure of a flower is the

Correct AnswerverifiedShow Answer

Where are floral megaspores produced?

Correct AnswerverifiedShow Answer

Angiosperms are the most recent group of plants to evolve,yet they can live in a greater diversity of habitats than any other group of plants.Why are angiosperms able to survive in deserts,at the top of mountains,and in marsh habitats?

Correct AnswerverifiedShow Answer

A portion of a flower that is a green leaf-like structure that protects the inner floral parts is the

Correct AnswerverifiedShow Answer

Which of the following is a factor in the development of flowering plants?

Correct AnswerverifiedShow Answer

Which of the following is NOT a variable in the reproduction of flowering plants?

Correct AnswerverifiedShow Answer

A(n) ______ is a chemical synthesized in small quantities in one part of an organism and transported to another,where a target cell is affected.

Correct AnswerverifiedShow Answer

Global climate change has caused historically-tropical diseases to exist at higher latitudes.With new selection pressures,plants are likely to

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

You plant a seed in a pot containing soil,and then add water and place the pot under a light.After the seedling emerged,complete with two green leaves,the carbon dioxide levels decreased in the closed chamber.Which of the following is true of this plant?

Correct AnswerverifiedShow Answer

The whorl of a flower that consists of the female reproductive parts is the

Correct AnswerverifiedShow Answer

Whorl two of a flower is made up of

Correct AnswerverifiedShow Answer

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