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Biology (Nora) > Plant Tissues > Flashcards

Plant Tissues Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

Tissues

A

Groups of similar cells joined together for a particular function

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2
Q

Where does cell division take place?

A

Within meristematic cells

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3
Q

Where are primary meristems found?

A

At the shoot and root tips

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4
Q

Where are secondary meristems found

A

Within the stem

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5
Q

Meristem

A

A zone of active division in plants

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6
Q

Describe a meristematic cell

A

Thin walled and small and develop into all other cell types

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7
Q

Simple tissue

A

Only one cell type

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8
Q

Complex tissue

A

More than one cell type

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9
Q

3 types of plant tissue

A

Dermal
Vascular
Ground

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10
Q

Dermal tissue

A

A single layer of cells covering the different parts of the plant

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11
Q

Example of dermal tissue

A

Epidermis

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12
Q

Vascular tissue

A

Involved in transport within the plant

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13
Q

2 examples of vascular tissue

A

Xylem and phloem

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14
Q

Ground tissue

A

All tissue except dermal and vascular

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15
Q

Is the epidermis living?

A

Yes

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16
Q

Cuticle of the epidermis

A

A waxy layer covering the outer surface called the cuticle

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17
Q

Location of the epidermis

A

Covers the outer surfaces of leaves, stems and roots

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18
Q

Function of dermal tissue

A

Protection

If cuticle present-prevents water los and entry of fungal parasites eg.mildew

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19
Q

3 vascular tissues

A

Xylem vessels, tracheids and phloem

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20
Q

How are xylem vessels formed

A

Tubes formed when the end walls of cells break down

21
Q

Appearance of xylem vessels

A

Tubes extending from roots to leaves

22
Q

Are xylem vessels living

A

No they are dead at maturity

23
Q

What gives xylem vessels great strength

A

They have thick lignificad walls

24
Q

Lingin

A

A chemical substance harder than cellulose

25
Q

Why do xylem vessels have pits?

A

Allow water to pass through

26
Q

What forms wood

A

Lignified xylem

27
Q

Location of xylem vessels

A

In vascular bundles of stems, roots and leaves and in wood

28
Q

2 functions of xylem vessels

A

Transport water and minerals up through plant

Strength and support

29
Q

Appearance of xylem tracheids

A

Elongated cells pointed at both ends

30
Q

How can water pass from one tracheid to another

A

Through the pits in their walls

31
Q

Are tracheids living?

A

No

32
Q

Tracheid cell walls are

A

Lignified

33
Q

What’s different about tracheids 2 to vessels

A

Primitive cells

Found in coniferous trees egpine

34
Q

Location of tracheids

A

In vascular bundles of stems, roots and leaves and in wood

35
Q

2 functions of tracheids

A

Transport of water and minerals up through the plant

Strength and support

36
Q

2 cell types in phloem

A

Sieve tubes and companion cells

37
Q

Appearance of phloem sieve tubes

A

Tubes of cells extending from roots to leaves

38
Q

How are sieve tubes formed

A

Unlike xylem, walls don’t break down but they become perforated with pores to become sieve plates
Nuclei disappear but cytoplasm remains and is seen to stream through the pores in the sieve plates

39
Q

Cell walls of phloem

A

Thin
Made of cellulose
No lingin

40
Q

Where are companion cells in phloem

A

They lie close to each sieve tube cell

41
Q

Are sieve tubes living

A

No

42
Q

Are companion cells living

A

Yes

43
Q

Is phloem a living tissue

A

Yes

44
Q

Location of phloem

A

In the vascular bundles of stems, roots and leaves and in bark

45
Q

Function of sieve tubes

A

Movement of food and other organic substances eg. Hormones around the plant
Translocation ^^

46
Q

Companion cell function

A

Control the functioning of the sieve tubes

47
Q

organs

A

Composed of a number of different tissues working together to perform a function (s)

48
Q

Example of plant organ

A

Leaf

Biology (Nora) (18 decks)

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