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ENVS Exam 3 > Exam 3 > Flashcards

Exam 3 Flashcards

1
Q

Which of the following situations results in limited fruit sets

A

All are reasons for limited fruit sets

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2
Q

Which of these is an aspect of sexual reproduction

A

All are correct

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3
Q

In a dicot seed, the largest part of the seed being a pair of modified leaves full of stored food

A

Cotyledons

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4
Q

What process allows a Venus fly trap to catch insects when they land on them

A

Osmosis

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5
Q

What term is used for a stimulus like a hormone that come from inside of the plant

A

Endogenous

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6
Q

What term is used for a stimulus like light that comes from outside of the plant

A

Exogenous

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7
Q

What is the term for rapid evolution that results of many species from a single ancestor when islands are colonized

A

Adaptive radiation

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8
Q

Which of these is not part of the double fertilization in plants

A

4 Endosperm Nuclei

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9
Q

Which plant hormone protects plants from drought stress by causing the stomata to close when the soil starts to get dry

A

Abscisic acid

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10
Q

Which methods are not used by plants to protect themselves against pathogens and herbivores

A

Become dormant

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11
Q

The main stalk of an inflorescence is called

A

Peduncle

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12
Q

________ is the number of replicate chromosomes present in the nucleus of a cell

A

Ploidy

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13
Q

______ is a stage in seed germination

A

Imbibition

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14
Q

The concept of survival of the fittest is based on the assumption that

A

Natural selection favors individuals which are best adapted and will reproduce in greatest numbers

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15
Q

Blue light receptors trigger the following

A

All are correct

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16
Q

_____ is the formation of a fruit without seeds

A

Parthenocarpic

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17
Q

Which hormone is important in ripening fruits and aging of flowers

A

Ethylene

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18
Q

The acid growth hypothesis refers to the following

A

The role of auxin in loosening cell walls through acidification and explanation activation

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19
Q

Sweet brightly colored flowers with long floral tubes are most likely to use pollination by

A

Butterflies

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20
Q

What an organism looks like is determined by its genetic makeup and the effects of the environment and is called teh

A

Phenotype

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21
Q

______ is the most common type of seed dormancy

A

Quiescence due to lack of water

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22
Q

Systemic acquired resistance

A

Occurs in response to an attack on the plant

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23
Q

Bright red or yellow odorless flowers with long floral tubes are most likely to use pollination by

A

Birds

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24
Q

A _____ consist of a stigma, a style and an ovary

A

Pistil

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26
Q

Which of the following is the most likely method of seed dispersal for a kernel of corn

A

Gravity

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26
Q

What hormone can be used as an herbicide at high concentrations

A

Auxins

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27
Q

What kind of experiments did Darwin & Darwin devise to study the effect of light on plant growth

A

All were used

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28
Q

In the genetic code, the following are teh two correct bonding pairs of nuclei acids in DNA

A

Adenine-thymine, guanine-cytosine

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29
Q

All sepals of a flower are called the

A

Calyx

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30
Q

The hormone auxin causes the following responses

A

All are correct

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31
Q

Which hormone stimulates shoot elongation and bolting in plants

A

GA

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32
Q

Which hormone promotes apical dominance in plants

A

Auxin

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33
Q

Which hormone stimulation defense responses in stressed plants

A

Ethylene

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34
Q

When a diploid organism has 2 alleles that are different it is called ____ for that characteristic

A

Heterozygous

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35
Q

Speciation occurs because of

A

All are correct

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36
Q

When a diploid organism has 2 allies that are the same it is called _____ for that characteristic

A

Homozygous

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36
Q

What is the gene pool of a population

A

All alleles of all individuals of a population

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37
Q

What is the term for two species that look the same but come from different ancestors

A

Convergent evolution

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38
Q

The type of dormancy exemplified by temperate woody plants can be broken by

A

Stratification

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40
Q

A rose flower contain petals, sepals, stamens and a pistil. Therefore, it can be described as being _____, and _______

A

Complete and perfect

41
Q

A plant that bears both male and female flowers on the same plant is referred to as

A

Monoecious

42
Q

Sweet, blue, or yellow flowers with nectar are most likely to use pollination by

A

Bees

42
Q

Polyploidy is NOT

A

Common in animals

43
Q

When a flower has sepals, and petals and stamens but is missing a pistil, it is referred to as

A

Imperfect and staminate

45
Q

Peas were good plants for Mendel to study the inheritance of traits because

A

All answers are correct

45
Q

If in a population of lizards the small one survive extreme drought better that the large ones and produce more small-sized lizards in the following years, what type of natural selection is this

A

Directional selection

46
Q

Which of the following describes the study of evolution

A

How life forms changed over millennia/ how organisms continue to change

48
Q

What is the term for when the gene pool of a population changes because when individual with certain phenotypic characteristics are preferred

A

Nonrandom mating

48
Q

Which applies to climacteric fruit

A

Burst of ethylene synthesis followed by high cellular respiration

49
Q

Which chemical in the plant allows for the measurement of day length

A

Phytochrome

50
Q

Which of these is a response to brassinosteroids

A

All are correct

51
Q

Biopharming is plant breeding to produce

A

Genetically modified plants that mass produce pharmaceuticals

52
Q

In a seed, the ____ is the new primary root of the new plant

A

Radicle

53
Q

A fruit formed when the receptacle becomes fleshy and the seeds attach to the surface of the fruit (like a strawberry) is classified as

A

Accessory fruit

54
Q

A protein is a chain of

A

Amino acids

55
Q

What is the term for when the gene pool of a population changes because individuals are moving among populations

A

Gene flow

56
Q

The growth response to light is called

A

Phototropism

58
Q

Transfer RNA brings amino acids to the ribosomes where they are assembled into a

A

Protein

59
Q

Small dull odorless flowers are most likely use pollination by

A

Wind

60
Q

Which is the following is/are part of a hypersensitive response in plants

A

All are correct

61
Q

Which statement is not correct for plant hormones

A

Always move in the xylem

61
Q

All petals of a flower are called the ___-

A

Corolla

62
Q

A plant is not affected by photoperiod is

A

Day-neutral

63
Q

What treatment during the night can trick a plant to experience long days when days are short

A

Exposure to white light

64
Q

Which of the following statements best describes evolution

A

Evolution is a change in allele frequency from one generation to the next

66
Q

Which is not a factor causing evolution

A

Acclimation

66
Q

In a monocot seed, the largest part of the seed full of stored food

A

Endosperm

67
Q

Chromosomes

A

All are correct

68
Q

The flower color of hydrangeas is affected by

A

Soil acidity and aluminum content

69
Q

A fruit formed from several ovaries produced by a single flower that share a receptacle (like a blackberry) is referred to as

A

Aggregate fruit

70
Q

In a seed, the _____ becomes the first new leaves of the new plant

A

Plumule

71
Q

Inheritance patterns dont always follow Mendel’s principles becuase

A

A character can be controlled by more than one gene

72
Q

______ is the deposition of pollen on the stigma

A

Pollination

73
Q

A ______ is the length of DNA that codes for teh production of a protein or protein subunit

A

Gene

74
Q

The juicy fleshy part of an orange that you can eat is the _____

A

Endocarp

76
Q

The kiwi vine exhibit an imperfect flower type and pistillate and staminate flowers appear on separate plants therefore it is a ____ plant

A

Dioecious

76
Q

Mendels law of inheritance included

A

All are included

77
Q

A pecan tree has separate pistillate and staminate flowers, and they both occur on the same plant. Therefore, a pecan tree is____

A

Monoecious

78
Q

A plant that flowers when the nights get longer

A

Short-day

79
Q

A plant that flowers when the nights get shorter

A

Long-day

80
Q

The type of dormancy exemplified by the hard seed coat of seeds like lotus can be broken by

A

Scarification

82
Q

Thigmotropism is

A

The plants response to touch or mechanical stimuli

83
Q

Which of the following is most likely the mode of seed dispersal for a grass burr

A

Animal coat

84
Q

Which of the following strategies is NOT part of plant breeding

A

Incomplete dominance

85
Q

Which of theses is an aspect of asexual reproduction

A

None are correct

86
Q

What hormone can be used in the greenhouse and in tissue culture to stimulate adventitious shoot formation

A

Cytokinins

88
Q

Transfer RNA brings main acids to ribosomes where they are assembled into a

A

Protein

88
Q

A _______ consist of a filament and an anther

A

Stamen

90
Q

A cross between two heterozygous plants produces the following phenotypic ratio of dominant to recessive

A

3:1

91
Q

What is the correct order in which a hormone activates a response in the cell

A

Hormone, reception, transduction, response

91
Q

What is the term for a naturally occurring, organic compound that affects physiological processes at low concentrations

A

Hormone

93
Q

Which hormone induces seed germination, fruit set and growth in plants

A

GA

94
Q

Which of the following gen types where W means dominant white flower will NOT have the white flower color

A

ww

95
Q

White musky flowers which open at night are most likely to sue pollination by

A

Bats

95
Q

Hybrids are a cross between

A

Two plants with different characteristics

96
Q

Which of these is an aspect of vegetative reproduction

A

None are correct

97
Q

What is a segment of DNA that codes for a specific protein

A

Gene

98
Q

How can a plant protect itself from intruders

A

All are correct

99
Q

What is a segment of DNA that codes for a specific protein

A

Gene

ENVS Exam 3 (1 decks)

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