General Biology: Plant Tissues

Question 1

A group of cells of the same type or of the mixed type, having a common origin and performing an identical function.

Answer 1

Plant Tissues

Question 2

What are two group classifications of plant tissues?

Answer 2

Meristematic and Permanent Tissue

Question 3

Classification. Have cells which are CONTINUOUSLY DIVIDING.

Answer 3

Meristematic Tissue

Question 4

Meristematic Tissue.
(a) Found in the ________ region of the plant ( _______ of roots and shoots)
(b) Cells are __________ and are capable of undergoing repeated division throughout their life.

Answer 4

a. growing; apices
b. immature

Question 5

3 types of Meristematic Tissues based on:

Answer 5

Origin, the Location, Function

Question 6

3 meristematic tissues based on origin:

Answer 6

Promeristem, Primary Meristem Secondary Meristem

Question 7

Meristematic Origin Based.
YOUNGEST stage of the growing organ.
/Gives rise to primary meristem

Answer 7

Promeristem

Question 8

Meristematic Origin Based.
EBRYONIC Tissues; Gives rise epidermis, the cortex, the leaves, and the pith.

Answer 8

Primary Meristem

Question 9

Meristematic Origin Based.
Develops LATER from NON-MERISTEMATIC tissues at a certain stage of development of organ/plant.

Answer 9

Secondary Meristem

Question 10

3 meristematic tissues based on location:

Answer 10

Apical, Intercalary, Lateral

Question 11

Meristematic Location Based.
Actively dividing cells located at the TIPS of the roots and shoots.

/Aids INCREASE OF HEIGHT of plant by facilitating growth of SHOOT & ROOT

Answer 11

Apical Meristem

Question 12

Meristematic Location Based.
Actively dividing cells located at the INTERNODES (or base of leaves)

/Aids INCREASE IN HEIGHT, with growth of INTERNODES

Answer 12

Intercalary Meristem

Question 13

Meristematic Location Based.
Actively dividing cells located at the LATERAL side of STEM AND ROOT

/Increase thickness of plant by INCREASING DIAMETER of it.

Answer 13

Lateral Meristem

Question 14

3 meristematic tissues based on function:

Answer 14

Protoderm, Procambium, Ground Meristem

Question 15

Meristematic Function Based.
OUTERMOST plant tissue and forms the epidermis.
/ Located around the outside of the stem and PROTECTS the plants from any mechanical shocks.

Answer 15

Protoderm

Question 16

Meristematic Function Based.
INNERMOST tissue and gives rise to (a) _________ and _________.

Answer 16

Procambium

a. XYLEM and PHLOEM

Question 17

Meristematic Function Based.
Cells are large with THICK WALLS
/ Gives rise to ground tissue.

Answer 17

Ground Meristem

Question 18

It is composed of cells that have LOST the power of DIVISION, having attained their definite form and sizes.

Answer 18

Permanent Tissue

Question 19

3 types of tissue under Permanent Tissue:

Answer 19

Dermal, Vascular, Ground

Question 20

PermanentTissue. COVERS and PROTECTS the plant
* epidermis, periderm

Answer 20

Dermal Tissue

Question 21

PermanentTissue. TRANSPORTS water, minerals, and sugars
* xylem and phloem

Answer 21

Vascular Tissue

Question 22

PermanentTissue. SITE for photosynthesis, supports vascular tissue, and stores nutriendts.
* parenchyma, collenchyma, and sclerenchyma

Answer 22

Ground Tissue

Question 23

PermanentTissue. (a) ________ covers the plant and found on the OUTER layer of roots, stems, and leaves.
* TRANSPIRATION, GAS EXCHANGE, & DEFENSE
* Epidermis break apart into thick periderm as a secondary growth allows the plant to grow in girth
* (b) ________ functions as first line of defense for the plant, protecting it from fire, dehydration, freezing, or diseases.

Answer 23

Dermal Tissue
a. Epidermis
b. Periderm

Question 24

3 types of ground tissue:

Answer 24

Parenchyma, Collenchyma, Sclerenchyma

Question 25

GroundTissue. Perform photosynthesis, STORAGE, and SECRETION.
* Thin walls, made of cellulose
* Closely packed or have intercellular space

(a) What are the 2 types of this?

Answer 25

Parenchyma
a. Chlorenchyma & Aerenchyma

Question 26

Parenchyma.
(a) Parenchymatous tissue that contains CHLOROPLASTS and CHLOROPHYLL
(b) Parenchyma tissue with LARGE AIR SPACES between cells.

Answer 26

a. Chlorenchyma
b. Aerenchyma

Question 27

GroundTissue. SUPPORTS young parts of plant shoot.
* Elongated cells that have thicker primary walls
* FLEXIBLE SUPPORT without restraining growth

Answer 27

Collenchyma

Question 28

GroundTissue. MORE RIGID than collenchyma.
* Contains large amounts of lignin, a relatively indigestible strengthening polymer that accounts for more than a quarter of dry mass of wood.
* Two types: Fiber and Sclereids

Answer 28

Sclerenchyma

Question 29

PermanentTissue. Two types of vascular tissue:

Answer 29

Xylem and Phloem

Question 30

VascularTissue. Performs CONDUCTION of water and mineral salts from ROOTS TO TOP of plants.

2 types: Tracheid & Vessels

Answer 30

Xylem

Question 31

Xylem. LONG and TAPERED ends. Function is to CONDUCT water; and provide mechanical support.

Answer 31

Tracheids

Question 32

Xylem. WIDER and SHORTER, thinner walled, less taperedwalls lignified, etc.

Have perforation plates that enable WATER FLOW freely through vessels.

Answer 32

Vessels

Question 33

VascularTissue. TRANSPORT of FOOD PRODUCTS from green parts to storage organs and to other organs.

aka BAST or LEPTON

2 elements: Sieve tube elements & Companion Cells

Answer 33

Phloem

Question 34

Phloem. LACK nucleus, ribosomes, a distinct vacuole, and cytoskeletal elements.

• HAS sieve plates
• Longitudinal transmission of food

Answer 34

Sieve Tube Elements

Question 35

Phloem. CONNECTED to sieve-tube element by plasmodesmata
* Load sugars into sieve-tube elements, which then transport it to other parts of the plant.

Answer 35

Companion Cells