General Terms - angiosperms Flashcards

1
Q

Pollination syndromes

A

Suites of characteristics of particular group of flowering plants that represent evidence of coevolution

More efficient and less waste than wind

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2
Q

Coevolution

A

Evolutionary response in both directions so one change leads to the other

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3
Q

Unisexual flowers

A

Only produce either pollen or ovules on separate flowers

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4
Q

Bisexual flowers

A

Produce both pollen and ovules on same flower

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5
Q

Monoecious plant

A

Individual plant gas 2 types of flowers

  1. Flowers with stamens but no functional carpels
  2. Flowers with one or more carpels but no functional stamens
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6
Q

Dioecious plant

A

Individual plant only has one type of flower

  1. Flowers with stamens but no functional carpels
  2. Flowers with one or more carpel but no functional stamen

Incapable of selfing

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7
Q

Imperfect flowers

A

Have either stamens or carpels but not both

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8
Q

Spatial separation

A

Different heights of anthers and stigmas on the same flower

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9
Q

Self-incompatability

A

Genetic system that allows plants to recognize pollen that shares the one or both alleles of S gene and preventing those male gametophytes from reaching ovules

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10
Q

Selfing

A

Forming seed from fertilization involving sperm and egg form the same individual

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11
Q

Evolutionary changes in floral structure

A
  1. Reduction in number of parts or whole sets of flower
  2. Fusion of parts
  3. Bilateral symmetry
  4. Container that protects ovules
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12
Q

Carpels

A

Contains immature seeds (ovules)
Includes stigma, style, ovary, and pistil
Fertile

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13
Q

Stigma

A

Sticky surface where pollen is received and germinates

At the top

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14
Q

Style

A

Pollen tubes grow down through to reach ovules

Between stigma and ovary

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15
Q

Ovary

A

Chamber containing ovules

Bottom of carpel

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16
Q

Stamen

A

Consists of filament (narrow stalk) and anther (microsporangia bearing unit)
Fertile

17
Q

Sterile appendages

A

Petals (innermost) and sepals (outermost)

Sepals protect buds
Petals advertise to potential animal pollinators

18
Q

Angiosperm

A

Vessel seeds because their ovules and seeds are contained within an enclosed structure (ovary) which becomes part of or all of the fruit

19
Q

Cross pollination

A

Pollen from one plant is transferred to a different plant