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Biology > Plant Tissues > Flashcards

Plant Tissues Flashcards

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1
Q

What is a tissue

A

Group of cells performing a particular function

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2
Q

Plant tissues are of 2 types

A
  1. Meristmatic
    2.Permanent tissue
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3
Q

Meristamatic tissue ke property

A

Active division/ dividing cell
Not specialised
Dense cytoplasm
Thin cell wall
No vacuoles
Prominent nuclei

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4
Q

Meristamatic tissues found at tip of root n shoot

A

Apical

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5
Q

Meristamatic tissue help in increasing the girth of the plant or lateral growth

A

Cambium / lateral meristm

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6
Q

MT found at nodes of the plant

A

Intercalary

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7
Q

Which helps in growth of the plant in terms of stem n root

A

Apical

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8
Q

Permanent tissue property

A

Lost capacity to divide
Taken up specialised shape form size function

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9
Q

2 types of permanent tissue

A

Simple PT
Complex PT

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10
Q

PT made up of one type of cell

A

Simple PT

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11
Q

PT made of more than one type of cell

A

Complex PT

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12
Q

PT have undergone

A

Differentiation

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13
Q

Simple PT found in

A

Below epidermis

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14
Q

___ is the most common simple PT

A

Parenchyma

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15
Q

Parenchyma used for

A

Storage

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16
Q

Characteristics of parenchyma

A

Thin cell wall
Unspecialised
Loose packed
Large intercellular space

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17
Q

Parenchyma storing chlorophyll

A

Chlorenchyma

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18
Q

Parenchyma providing mechanical support n bending

A

Collenchyma

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19
Q

Collenchyma found in

A

Tendrils , climbers

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20
Q

Collenchyma properties

A

Elongated
Irregular thickening at corners
Living
Intercellular space less

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21
Q

Parenchyma having large cavities

A

Aerenchyma ( for floating)

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22
Q

Aerenchyma found in

A

Aquatic plants

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23
Q

Dead parenchyma

A

Sclerenchyma

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24
Q

Lignified Walls

A

Sclerenchyma

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24
Q

No intercellular spaces in which parenchyma

A

Sclerenchyma

25
Q

Sclerenchyma structure

A

Long narrow
Lignified ( lignin thickened cornor)

26
Q

Sclerenchyma found in

A

Around vascular bundles
Veins of leaves
Husk of coconut
Hard coved of seeds n nuts
Stems

27
Q

Outermost layer of plant

A

Epidermis

28
Q

Epidermis characteristics

A

Continuous single layer of cell
No intercellular spaces

29
Q

__ n __ of epidermis is __ wrt the inner layer

A

Outer layer n side walls are thick

30
Q

Epidermis function

A

Protection against
Transpiration ( waxy coating in aerial plants )
Mechanical injury
Invasion by parasitic fungi
Facilitates diffusion of gases via stomata ( guard cells )

31
Q

Dessert plants have __ epidermis

A

Thick

32
Q

In Dessert plants epidermis secretes waxy thing called __ to prevent transpiration n provide protection against __ n ___

A

Cutin
Invasion n mechanical injury

33
Q

Is epidermis present in roots

A

Yes

34
Q

Root function of epidermis

A

Bears root hairs helps in absorption n increases the surface area for absorption

35
Q

Cork

A

As plant grow old secondary meristem in cortex produces layes of cells which r
Dead
Compactly arranged
No intercellular spaces

36
Q

Suberin present in

A

Cork

37
Q

Suberin is __ ( function )

A

Impervious to gases n water

38
Q

In complex PT made of diff cells which perform all together a common function

A
39
Q

Types of complex PT

A
40
Q

Xylem n phloem also called

A

Conducting tissues

41
Q

Xylem n phloem also constitute

A

Vascular bundle

42
Q

Vascular bundle helps in s

A

Survival of plant in territorial envt

43
Q

Xylem consists of

A

Tracheids
Vessels
Xylem fibres
Xylem parenchyma

44
Q

Living cells in xylem

A

Xylem parenchyma

45
Q

Dead cells in xylem

A

Vessels
Tracheids
Xylem fibre

46
Q

Which helps in conduction of water vertically

A

Vessels n tracheids

47
Q

Which has tubular structure in xylem

A

Tracheids n vessels

48
Q

Xylem n phloem function

A
49
Q

Phloem consists of

A

Seive tubes
Seive cells
Phloem fibres
Phloem parenchyma
Companion cells

50
Q

Dead cells in phloem

A

Phloem fibre

51
Q

Who m I ?
Tu ular cells with __ walls

A

Seive tubes with perforated walls

52
Q

Cork tissue is __

A

Dead tissue

53
Q

Which meristem increases volume of plant

A

Cambium or lateral

54
Q

Meristamatic tissue undergo __ to form permanent tissue

A

Differentiation

55
Q

Which meristem or parenchyma provides rigidity n hardness

A

Sclerenchyma

56
Q

Function of epidermis in dessert plants

A

Thick n made of cutin to prevent transpiration

57
Q

Function of epidermis in aerial plants

A

Prevent mechanical injury
- invasion by parasites n fungi
Prevent transpiration

58
Q

Function of epidermis in cork

A

Dead
Suberin walls
Compact walls no intercellular spaces
Which is impervious to gases n water

59
Q

Epidermis also ensures exchange of gases via

A

Stomata ( gas + water exchange)

60
Q

Xylem has __ way flow

A

Unidirectional (one)

61
Q

Phloem has __ way flow

A

2 directional

Biology (8 decks)

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