Plant tissues Flashcards Preview

Gd 10 - Life Sciences 2017 > Plant tissues > Flashcards

Flashcards in Plant tissues Deck (32):
1

Type of tissue and observable features

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Parenchyma

  • rounded sides
  • thin walled cells
  • loosely packed

2

Type of tissue and observable features

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Sclerechyma

  • cell walls evenly thickened with lignin

3

Type of tissue and observable features

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Phloem

  • elongated sieve tubes
  • companion cells
  • perforated sieve plates

4

Type of tissue and observable features

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Meristematic tissue

  • Tightly packed
  • large nuclei
  • small or no vacuole

5

Type of tissue and observable features

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Collenchyma

  • cells tightly packed (no aispaces)
  • cell walls thickened in corners

6

Type of tissue and observable features

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Xylem vessel

  • Spiral secondary thickening (lignin)
  • Tube shaped

7

Type of tissue and observable features

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Leaf epidermis

  • Tightly packed
  • Single layer
  • waxy cuticle

8

Type of tissue and observable features

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Chlorenchyma (spongy mesophyll)

  • large airspaces
  • thin cell walls
  • chloroplasts

9

Type of tissue and observable features

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Epidemal

-tightly packed cells

-stoma (guard cells and pores)

-no chloroplasts

10

Type of tissue and observable features

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Parenchyma

  • many sided/rounded cells
  • thin walled cells
  • loosely packed, large airspaces

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11

Type of tissue and observable features

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Xylem vessels

  • wide tubes
  • thickened cell walls (lignin)

12

Type of tissue and observable features

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Xylem (tracheids)

  • long tapered cells
  • thickened lignin walls with pores

 

13

Type of tissue and observable features

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Epidermis (root hairs)

  • Long projections of cytoplasm
  • thin cell walls
  • tightly packed

14

Function of meristematic tissue

  • For plant growth
  • Initially undifferentiated
  • Make new cells

15

Function of sclerenchyma

  • lignin thickening strong
  • Provides structure
  • support of various regions of the plant

16

Function of parenchyma

  • Store food and water
  • Allow gas diffusion
  • Allow water movement
  • Packing tissue (some degree of support)

17

Function of Chlorenchyma

  • makes up mesophyll in leaf
  • photosynthesis (chloroplasts)
  • Spongy mesophyll allows movement of gases

18

Function of collenchyma

  • Flexible support

19

Function of epidermal guard cells

  • Open or close pores (stoma)
  • control entry and exit of gases

20

Function of epidermal root hairs

  • Increased surface area of root
  • Increased water and mineral uptake

21

Function of epidermal cells

  • Protective skin
  • Clear to let light through
  • Prevents infection (cuticle)
  • Prevents waterloss (cuticle)

22

Function of phloem sieve tubes

  • Transport manafacture organic food
  • From source to sink e.g. leaves to other tissues

23

Function of phloem companion cells

  • Keep sieve tube cells alive
  • Regulate sieve tube functioning

24

Functions of xylem tracheids

  • Lateral water and mineral transport
  • Strength and support

25

Functions of xylem vessels

  • Transport water and disolved minerals
  • 'big pipes'
  • Unidirectional movement from roots up stem to leaves

26

Type of tissue and observable features

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Parenchyma

  • large airspaces
  • rounded cells
  • loosely packed

27

Type of tissue and observable features

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Sclerenchyma

  • Cell walls evenly thickened by lignin

28

Type of tissue and observable features

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Meristematic tissue

  • Tightly packed
  • large nuclei
  • small or no vacuole

29

Type of tissue and observable features

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Sclerenchyma

  • long fibres
  • Cells evenly thickened with lignin

30

Type of tissue and observable features

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Collenchyma

  • cells tightly packed (no aispaces)
  • cell walls thickened in corners

31

Type of tissue and observable features

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Different xylem vessels

  • Spiral, pitted and annular secondary thickening (lignin)
  • Tube shaped

32

Type of tissue and observable features

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Phloem

  • elongated sieve tubes
  • companion cells
  • perforated sieve plates