Plant Tissue

Question 1

First land plants evolved when?

Answer 1

About ~420 millions years ago,

Question 2

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

Answer 2

Plant Tissues

Question 3

Two groups of Plant Tissues

Answer 3

Meristematic

Permanent

Question 4

Continuously Dividing

Found in Growing regions of Plant (Apices of roots and shoot)

Answer 4

Meristematic Tissue

Question 5

Meristematic Tissues Based on Origin

Answer 5

Promeristem

Primary meristem

Secondary meristem

Question 6

Meristematic Tissues Based on Location

Answer 6

Apical meristem
Intercalary meristem
Lateral meristem

Question 7

Meristematic Tissues Based on Function

Answer 7

Protoderm

Procambium

Ground meristem

Question 8

Youngest Stage of Growing Organ

Gives rise to primary meristem

Answer 8

Promeristem

Question 9

Gives rise to epidermis, cortex, leaves, and the pith.

Embryonic Tissues

Answer 9

Primary Meristem

Question 10

It develops later from non meristematic tissues at a certain stage of development of an organ of a plant.

Answer 10

Secondary Meristem

Question 11

Main Factor in Primary and Secondary Meristems

Answer 11

Primary is Vertical

Secondary is Lateral

Question 12

Located at tips of roots and shoots, increases height of plant.

Answer 12

Apical Meristem

Question 13

Located at internodes or base of the leaves, increase in height.

Answer 13

Intercalary Meristem

Question 14

Apical and Intercalary Meristems are both considered?

Answer 14

Primary Meristems

Question 15

At the side of the stem and the root, it increases the thickness with the diameter.

Answer 15

Lateral Meristem

Question 16

If Apical and Intercalary Meristems are both considered primary meristems, what is the lateral meristem considered as?

Answer 16

Secondary Meristem

Question 17

Outermost plant tissue and forms the epidermis, located around the outside of the stem and protects the plants from any mechanical shocks.

Answer 17

Protoderm

Question 18

Innermost tissue and gives rise to the xylem and phloem.

Answer 18

Procambium

Question 19

Cells are large with thick walls. Gives rise to ground tissue.

Answer 19

Ground Meristem

Question 20

Composed of cells that have lost the power of division, having attained
their definite form and sizes.

Answer 20

Permanent Tissue

Question 21

Covers the plant and can be found on the outer layer of roots, stems and leaves.

Transpiration, gas exchange and first line of defense.

Answer 21

Dermal Tissue

Question 22

Site for photosynthesis;

Supports vascular tissues and stores nutrients.

Answer 22

Ground Tissue

Question 23

Ground Tissues:

Answer 23

Parenchyma

Collenchyma

Sclerenchyma

Question 24

Photosynthesis, storage, and secretion

Answer 24

Parenchyma

Question 25

Mechanical Support for young cells.

Photosynthesis w/ chloroplasts.

Answer 25

Collenchyma

Question 26

Used for mechanical support in matured cells with lignin.

Answer 26

Sclerenchyma

Question 27

Types of Scelerenchyma

Answer 27

Either fibers, or sclereids.

Question 28

Made up of pure cellulose.

Answer 28

Fiber

Question 29

May occur in the cortex, pith, phloem, hard seeds, nuts, stony fruits, in leaves and in the stems of many plants.

They are also known as grit cells.

Answer 29

Sclereids

Question 30

Transport waters, mineral, and sugars

Answer 30

Vascular Tissue

Question 31

Water and mineral salts from the roots to the top of plants.

Answer 31

Xylem

Question 32

Transport of sugar from green parts to the storage organs and to other organs of plants.

Answer 32

Phloem

Question 33

What is another term for phloem?

Answer 33

Bast or Lepton

Question 34

Long and Tapered Ends

Main function is to conduct water.

Answer 34

Tracheids

Question 35

Wider, shorter, thinner walled, less tapered, aligned end to end, perforation plates, walls are lignified.

Have perforation plates that enable water to flow freely through it.

Answer 35

Vessels

Question 36

2 elements of Phloem:

Answer 36

Sieve Tube Elements

Companion Cells

Question 37

Presence of numerous pores crossing their bodies.

Longitudinal transmission of food.

Answer 37

Sieve Elements

Question 38

Lack a nucleus, ribosomes, a distinct vacuole, and cytoskeletal elements.

Sieve plates.

Answer 38

Sieve Tube Elements:

Question 39

Help load sugars into the sieve-tube elements, which then transport the sugars to other parts of the plant.

Connected to the sieve-tube element by
numerous plasmodesmata.

Answer 39

Companion Cells

Question 40

Simple Permanent Tissues

Answer 40

Parenhcyma

Collenchyma

Sclerenchyma

Question 41

Complex Permanent Tissues

Answer 41

Xylem

Phloem

Question 42

Large air Spaces

Answer 42

Aerenchyma

Question 43

Contains chloroplasts and Chlorophyll

Answer 43

Chlorenchyma