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A farmer might use gibberellins to stimulate stem elongation in plants,thereby increasing the crop yield in some plants.

A) True
B) False

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Which structures do fruits arise from?


A) flowers
B) leaves
C) apical meristems
D) stems
E) roots

F) A) and E)
G) All of the above

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The whorl of a flower that consists of all petals is the


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

F) None of the above
G) B) and C)

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When Tewsbury and Nabhan carried out feeding preferences studies,they were testing their hypothesis that peppers are hot


A) to promote pollination of the peppers.
B) for a reason unrelated to seed dispersal or destruction.
C) to promote dispersion when animals drop the hot fruit.
D) to deter seed destroyers without affecting dispersers.
E) to deter all animals from destroying the seeds.

F) D) and E)
G) B) and D)

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All tropisms result from differential growth in which one side of the responding organ grows faster than the other.

A) True
B) False

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A seed is an embryo and its food supply is inside a seed coat.

A) True
B) False

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


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

F) C) and E)
G) A) and E)

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Where are floral microspores located?


A) ovule
B) corolla
C) anther
D) sepal
E) stigma

F) A) and D)
G) B) and C)

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Clover will flower if exposed to 8 hours of dark and 16 hours of light.It will not flower if exposed to 16 hours of dark and 8 hours of light.However,if the 16 hours of dark is interrupted with a brief period of light,the clover will flower.Which of the following will trigger clover to flower?


A) long light periods
B) short dark periods
C) short light periods
D) long dark periods

E) None of the above
F) B) and D)

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The flower structure that consists of the male reproductive parts is the


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

F) A) and C)
G) B) and D)

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You plant a seed into a pot containing some 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?


A) water from the soil
B) starch from the seed
C) sugars from the soil
D) nutrients from the soil
E) light

F) None of the above
G) A) and E)

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A scion is


A) a part of a plant that is grafted to root stock of a closely related plant.
B) the root stock to which another plant part is grafted.
C) a triploid zygote that develops into endoderm.
D) a tetraploid zygote formed from the union of two diploid nuclei.
E) a clone of a plant created by tissue culture in a lab.

F) C) and D)
G) A) and B)

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The resumption of growth and development after a period of seed dormancy is


A) germination.
B) fertilization.
C) transpiration.
D) pollination.
E) stagnation.

F) A) and D)
G) B) and E)

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The whorl of a flower that consists of all the sepals is the


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

F) A) and B)
G) B) and E)

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Angiosperms owe their widespread distribution to their production of pollen,seeds,and flowers.Why is the production of pollen an advantage?


A) It is necessary for sexual reproduction.
B) It protects and nourishes the embryo.
C) It allows fertilization in the absence of water.
D) It promotes pollination.
E) It allows fertilization in moist areas.

F) A) and B)
G) D) and E)

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You plant a seed into a pot containing some soil,and then add water and place the pot under a light.In the first week,before the seedling even emerged from the soil,carbon dioxide levels increased in the closed chamber.This indicated that __________ was occurring.


A) cellular respiration
B) fertilization
C) photosynthesis
D) alcohol fermentation
E) sucrose production

F) B) and E)
G) D) and E)

Correct Answer

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Whorl four of a flower is made up of the


A) male reproductive parts of a flower.
B) petals.
C) female reproductive parts of a flower.
D) sepals.
E) stem region.

F) A) and B)
G) C) and D)

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