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BIO 101 Exam 5

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Question 1

 

The function of endosperm is to

Select one:

a. form the seedling.

b. develop the fruit.

c. provide water to the embryo.

d. provide nutrients to the embryo.

e. provide a protective coating for the embryo.

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Question 2

 

Parasitic plants have specialized roots for invading a host plant's tissues.  What are these roots called?

Select one:

a. adventitious

b. taproots

c. mycorrhizal

d. fibrous

e. haustoria

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Question 3

 

You are examining a seed with tiny white plumes attached to it.  How is this type of seed most likely dispersed?

Select one:

a. by animals who eat it

b. by floating on water

c. by the wind

d. by attaching to the fur of animals

e. by bursting forth from the seed pod

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Question 4

 

The pollen grain contains the

Select one:

a. sperm.

b. egg.

c. embryo.

d. endosperm.

e. anther.

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Question 5

 

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

Select one:

a. protoplast regeneration

b. high voltage electric pulses

c. a gene gun

d. plant hybridization

e. a bacterial plasmid

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Question 6

 

Which two structures are associated with the terminal bud?

Select one:

a. apical meristem and leaf primordia

b. shoot tip and zone of maturation

c. apical meristem and zone of cell division

d. zone of cell division and leaf primordia

e. none of these structures are associated with the terminal bud

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Question 7

 

The two-stage life cycle in plants evolved as an adaptation to life on land.

Select one:

True

False

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Question 8

 

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

Select one:

True

False

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Question 9

 

The male gametophyte in flowering plants will be found within the

Select one:

a. carpel.

b. ovary.

c. sepals.

d. filament.

e. pollen grain.

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Question 10

 

Most of the water obtained by a plant enters through the

Select one:

a. cambium layer.

b. palisade cells.

c. root hairs.

d. stomata.

e. bark.

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Question 11

 

If you had a problematic hillside that continually eroded when it rained, plants with which type of roots would best solve your problem?

Select one:

a. adventitious

b. taproots

c. mycorrhizal

d. fibrous

e. haustoria

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Question 12

 

Girdling a tree involves cutting a deep groove all the way around a tree trunk; it would have the effect of

Select one:

a. triggering additional auxin production and increasing leaf growth.

b. increasing the input of carbon dioxide and increasing photosynthesis.

c. interrupting the flow of minerals and stunting the growth of the tree.

d. interrupting the passage of phloem sap and killing the tree.

e. interrupting the passage of water and killing the tree.

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Question 13

 

When a plant grows upward, the distance between the internodes increases in length.

Select one:

True

False

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Question 14

 

Plant vascular tissue contains

Select one:

a. collenchyma and lignin.

b. xylem and phloem.

c. epidermis and cuticle.

d. periderm and cork.

e. parenchyma and sclerenchyma cells.

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Question 15

 

Upon visiting a redwood forest, you realize that because of their meristematic tissue these ancient trees are still growing.

Select one:

True

False

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Question 16

 

Which stem modifications are underground, thin, papery leaves and have a thick stem that lie dormant during the winter?

Select one:

a. corms

b. rhizomes

c. stolons

d. runners

e. nodes

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Question 17

 

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

Select one:

a. plastid.

b. plantlet.

c. callus.

d. protoplast.

e. phytoplast.

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Question 18

 

The tissue that regulates entrance of minerals into the vascular cylinder of a root is(are) the

Select one:

a. cortex.

b. epidermis.

c. endodermis.

d. pericycle.

e. root hairs.

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Question 19 

Which of the following is not part of the female portion of the flower?

Select one:

a. filament

b. carpel

c. pistil

d. stigma

e. style

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Question 20

 

The waxy material known as the Casparian strip is found on the

Select one:

a. cuticle.

b. xylem vessels.

c. vascular cambium.

d. endodermal cells.

e. epidermal cells.

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Question 21

 

Which structure of the eudicot embryo within a seed is NOT correctly identified?

Select one:

a. The radicle is the embryonic root.

b. A cotyledon is a seed leaf.

c. The endosperm is the nutrient source for the embryo.

d. The epicotyl is the shoot above the attachment of the cotyledons.

e. The hypocotyl is the embryo plant below the attachment of the cotyledons.

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Question 22

 

Sugars are conducted through plant tissues by the

Select one:

a. xylem.

b. phloem.

c. epidermis.

d. trichomes.

e. procambium.

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Question 23

 

What flower mechanism would not help prevent pollination by a foreign plant species?

Select one:

a. A pollen tube only grows inside the style of its own species.

b. The stigma is sticky mainly to its own species of pollen.

c. The timing of flowering keeps pollinators moving among a limited number of species.

d. Flowers attract a small number of specialized pollinators, and therefore pollen is not spread equally to all available species of flowers.

e. Flowers of different plant species bloom at the same time with flowers of similar shape, size, and color.

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Question 24 

A friend complains that all of her houseplants have bent stems. You examine the plants and find that their stems all curve toward the light. What would you recommend to your friend to correct the problem?

Select one:

a. Apply an auxin to the shady side of the stems.

b. Water the plants more frequently.

c. Apply gibberellins to the bases of the stems.

d. Turn each plant occasionally.

e. Repot the plants.

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Question 25

 

 

An aphid is an insect that has mouthparts to sip plant sap. When placed on a herbaceous stem, it soon has its mouthparts embedded and is withdrawing plant sap. Sometimes so much plant sap is taken that it cannot use all of it and the aphid secretes droplets of the sugar to attract ants that in turn protect and care for the aphids. What layer of cells has the aphid's mouthparts tapped?

Select one:

a. xylem

b. phloem

c. parenchyma

d. trichomes

e. collenchyma

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