Plant Tissues

Question 1

Tissues

Answer 1

Groups of similar cells joined together for a particular function

Question 2

Where does cell division take place?

Answer 2

Within meristematic cells

Question 3

Where are primary meristems found?

Answer 3

At the shoot and root tips

Question 4

Where are secondary meristems found

Answer 4

Within the stem

Question 5

Meristem

Answer 5

A zone of active division in plants

Question 6

Describe a meristematic cell

Answer 6

Thin walled and small and develop into all other cell types

Question 7

Simple tissue

Answer 7

Only one cell type

Question 8

Complex tissue

Answer 8

More than one cell type

Question 9

3 types of plant tissue

Answer 9

Dermal
Vascular
Ground

Question 10

Dermal tissue

Answer 10

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

Question 11

Example of dermal tissue

Answer 11

Epidermis

Question 12

Vascular tissue

Answer 12

Involved in transport within the plant

Question 13

2 examples of vascular tissue

Answer 13

Xylem and phloem

Question 14

Ground tissue

Answer 14

All tissue except dermal and vascular

Question 15

Is the epidermis living?

Answer 15

Yes

Question 16

Cuticle of the epidermis

Answer 16

A waxy layer covering the outer surface called the cuticle

Question 17

Location of the epidermis

Answer 17

Covers the outer surfaces of leaves, stems and roots

Question 18

Function of dermal tissue

Answer 18

Protection

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

Question 19

3 vascular tissues

Answer 19

Xylem vessels, tracheids and phloem

Question 20

How are xylem vessels formed

Answer 20

Tubes formed when the end walls of cells break down

Question 21

Appearance of xylem vessels

Answer 21

Tubes extending from roots to leaves

Question 22

Are xylem vessels living

Answer 22

No they are dead at maturity

Question 23

What gives xylem vessels great strength

Answer 23

They have thick lignificad walls

Question 24

Lingin

Answer 24

A chemical substance harder than cellulose

Question 25

Why do xylem vessels have pits?

Answer 25

Allow water to pass through

Question 26

What forms wood

Answer 26

Lignified xylem

Question 27

Location of xylem vessels

Answer 27

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

Question 28

2 functions of xylem vessels

Answer 28

Transport water and minerals up through plant | Strength and support

Question 29

Appearance of xylem tracheids

Answer 29

Elongated cells pointed at both ends

Question 30

How can water pass from one tracheid to another

Answer 30

Through the pits in their walls

Question 31

Are tracheids living?

Answer 31

No

Question 32

Tracheid cell walls are

Answer 32

Lignified

Question 33

What’s different about tracheids 2 to vessels

Answer 33

Primitive cells | Found in coniferous trees egpine

Question 34

Location of tracheids

Answer 34

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

Question 35

2 functions of tracheids

Answer 35

Transport of water and minerals up through the plant | Strength and support

Question 36

2 cell types in phloem

Answer 36

Sieve tubes and companion cells

Question 37

Appearance of phloem sieve tubes

Answer 37

Tubes of cells extending from roots to leaves

Question 38

How are sieve tubes formed

Answer 38

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

Question 39

Cell walls of phloem

Answer 39

Thin Made of cellulose No lingin

Question 40

Where are companion cells in phloem

Answer 40

They lie close to each sieve tube cell

Question 41

Are sieve tubes living

Answer 41

No

Question 42

Are companion cells living

Answer 42

Yes

Question 43

Is phloem a living tissue

Answer 43

Yes

Question 44

Location of phloem

Answer 44

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

Question 45

Function of sieve tubes

Answer 45

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

Question 46

Companion cell function

Answer 46

Control the functioning of the sieve tubes

Question 47

organs

Answer 47

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

Question 48

Example of plant organ

Answer 48

Leaf