plant diversity 3 Flashcards

1
Q

primary growth starts where

A

root apical meristem and shoot apical meristem

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2
Q

primary growth is the increase in what

A

increase in length

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3
Q

secondary growth is the increase in what

A

girth

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4
Q

what kind of plant experiences secondary growth

A

woody plants

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5
Q

vascular cambium produces

A

secondary vascular tissue

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6
Q

cork cambium produces

A

secondary dermal tissue

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7
Q

periderm is produced by what

A

the cork cambium

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8
Q

epiderm is replaced by what in secondary growth of plants

A

periderm

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9
Q

what is the job of the epidermis and periderm

A

prevent water loss

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10
Q

what is the waxy substance secreted by the epidermis to prevent water loss

A

cuticle

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11
Q

water loss occurs where

A

stomata via transpiration

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12
Q

what is the waxy material produced by the cork cells to prevent water loss

A

suberin

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13
Q

where does gas exchange occur

A

Stomata

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14
Q

where are lenticels found

A

periderm

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15
Q

According to the competitive exclusion principle

A

Two species can not continue to occupy the same niche

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16
Q

What affects water potential

A

Pressure and solute concentration

17
Q

What is turgor pressure

A

Pressure exerted by the plasma membrane to the cell wall and cell wall against the protoplast

18
Q

What is the protoplast

A

The living part of a cell, that includes the plasma membrane

19
Q

What are aquaporins

A

Water channels found in vacuole and cell membranes that speed up osmosis without changing the direction of water

20
Q

What are the transport routes that exist before entering the plants xylem

A

Apoplast route
Symplast route
Transmembrane route

21
Q

What does the apoplast route consist of

A

Everything external to the plasma membrane

22
Q

What are the paths the apoplast route takes

A

Cell walls, extra cellular spaces and interior of vessel elements

23
Q

The symplast consists of

A

Cytosol and plasmodesmata

24
Q

What is the route of transmembrane

A

Out of one cell, across another and into another cell

25
Q

What is the route of transmembrane

A

Out of one cell, across another and into another cell

26
Q

Resource partitioning is

A

Species sharing resources

27
Q

What is obligate mutualism

A

Where one species can not survive without the other

28
Q

What is facultative mutualism

A

Where species can survive alone

29
Q

What type of mutualism is between plants and fungi

A

Trophic mutualism

30
Q

Parasitism

A

Relationship between two organisms when one(parasite) benefits at the expense of the (host)

31
Q

Commensalism

A

One specie benefits and the other is neither harmed nor helped

32
Q

What is the key factor driving the extinction vortex

A

Loss of genetic variation

33
Q

Small popular approach focuses on

A

Small populations

34
Q

Declining population approach focuses on

A

Endangered populations

35
Q

Function of the casparian strip

A

Ensures all water and dissolved substances must pass through a cell membrane before entering the stele

36
Q

what is etiolation

A

the morphological adaptation for growing in darkness

37
Q

pytochrome is located where

A

cytoplasm

38
Q

what type of second messengers of are involved de-etoilation

A

ca2+ and cGMP