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BSC 430 > Chapter 5 > Flashcards

Chapter 5 Flashcards

1
Q

Advantages of Asexual Reproduction

A

Most common in Wetland Plants

  1. New individual from only one individual
  2. Independant of extra individual
  3. Rapid reproduction
  4. Time flexible
  5. Reduces chance
  6. Stable environments
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2
Q

Advantages of Sexual Reproduction

A
  1. Genetic diversity
  2. Coping with pathogens
  3. Genetic repair
  4. Flucuating environments
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3
Q

Two Methods of Asexual Reproduction

A
  1. Fragmentation
  2. Parthenogenisis
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4
Q

Fragmentation

A

Formation of propagules

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5
Q

Propogule

A

Clone

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6
Q

Parthenogenisis/ apomixis

A

Fake sex

emryos grow without fertilization

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7
Q

Apomix

A

Aggrogate species such as blackberries

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8
Q

Methods of Sexual Reproduction

A

Spore plants (liverworts, ferns, mosses)

Seed plants (angiosperms, gymnosperms)

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9
Q

How do aquatic plants deal with water and reproduction?

A
  1. Aerial inflorescense
  2. Modified structures to hold flower aerial
  3. Self-Pollination
  4. Water pollination (hydrophilly)
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10
Q

Dispersal Methods

A

Wind

Water

Animals

Gravity

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11
Q

Methods of Germination

A

Light

Fire

Smoke

Chemical (okra)

Temperature

Seedcoat injury

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12
Q

Seedling Establishment

A

Big issue for aquatics

Oxygen

low light

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13
Q

Succession

A

Change in a community over time

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14
Q

Community Dynamics Diagram

A

Pioneer species—->—->—->Climax Community

Disturbances cause regressions

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15
Q

Secondary Succession

A
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16
Q

Disturbances

A

Waves, floods,

17
Q

Abiotic change

A

Temperature, surrounding environment, light availability, moisture

18
Q

Biotic Change

A

Introduced species

19
Q

Clements

A

Plant communities are superorganisms (overly simplified)

Strong bond

20
Q

Gleason

A

individuals change based on context

21
Q

Connell

A
  1. facilitation
  2. Tolerance (neutral)
  3. Negitive or inhibition
22
Q

Odom

A

developing v. mature ecosystems

Wetlands? Some wetlands are mature “pulse stability”

23
Q

Models of Wetland Succession

A
  1. Hydrarch
  2. Van der Valk
24
Q

Hydrarch

A

open water—>phytoplankton (from birds)—->submerged—-> floating—–>emergent herbs—>emergent shrubs—>wetland forest—> upland forest

25
Q

Empirical

A

Physical, repeatable, observable, falsifiable

26
Q

Marine System Succession

A

Open ocean—> marsh —-> shrubs/trees

27
Q

Marine System

A

Open ocean—->salt marsh—-> brackish marsh—->freshwater marsh—-> shrubs—–>tress

28
Q

Van der Valk

A

Environmental sieve

29
Q

Diversity and nutrients

A

Most diverse when your nutrient % is in the medium range

30
Q

How do invasive species get here?

A

Accidentally

Ornamental

31
Q

Native

A

Indigenous

32
Q

Invasive

A

Dominant colonization can include native and non-native

33
Q

Naturalized

A

Non-natives that are not invasive but grow okay

BSC 430 (2 decks)

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