Biology 308-Plant Biology Lab 9

Front 1

What does primary growth in roots and stems result in?

Back 1

primary growth in results results in elongation of roots, primary growth in stems results in increase in height of plant

Front 2

Describe parenchyma cells.

Back 2

thin walls, vary in size, shape and function, living at maturity,

Front 3

Describe collenchyma cells.

Back 3

thicker walls than parenchyma, living at maturity, longer than wide, strong walls and live under epidermis

Front 4

Describe sclerenchyma cells.

Back 4

have a secondary wall, thick, that are impregnated with lignin, generally dead at maturity and play a role in supporting the plant

Front 5

What is secondary growth?

Back 5

growth in diameter of root and stem due to the lateral mierstematic tissues cork and vascular cambium

Front 6

What are the two lateral meristematic tissues called?

Back 6

cork cambium and vascular cambium

Front 7

What are the functions of roots?

Back 7

anchorage, absorption of water and minerals, conduction of these materials to the base of the stem, and food storage.

Front 8

What do root hairs do for roots?

Back 8

They increase the surface area of roots and aid in absorption of water and minerals.

Front 9

How do roots differ from stems?

Back 9

the lack nodes and internodes, do not produce leaves, have root hairs, have a cellular root cap, lateral roots arise from the parents roots, primary tissue arrangement differs

Front 10

What are the primary tissues of roots?

Back 10

ground meristems, protoderm and procambium

Front 11

What functions do roots and stems share and which ones differ?

Back 11

support and conduction; roots are function in anchorage and absorption

Front 12

What is primary growth?

Back 12

in roots results in elongation of roots, while in stems results in increase height of the plant

Front 13

What gives rise to the primary meristems and what do they form?

Back 13

apical meistem which is continuously dividing cells at the tip of every main stem and branch- gives rise to the protoderm- dermal tissues (epidermis), ground tissues (parenchyma, collenchyma and sclerenchyma andvascular tissues (procambium (primary xylem and phloem)

Front 14

What do the primnary meristems form?

Back 14

cortex, primary xylem, phloem, pith and tissues found in leaves, lateral buds and epidermis

Front 15

What cells make up ground tissue and how do they differ in structure and function?

Back 15

parenchyma cells are the nost common and are generally thin-walled but vary in shape, size and function
collenchyma cells have unevenly thickened walls, and are generally thicker than parenchyma cells, underneath the epidermis, longer than wide have pliable but strong walls
scelerenchyma- thick, tough secondary walls that are impregnated w/ lignin-dead at maturity and play a role in supporting the plant

Front 16

Where are root hairs formed?

Back 16

region of maturation

Front 17

What are the region of the root?

Back 17

maturation, elongationa nd cell division

Front 18

What tissue gives rise to lateral roots?

Back 18

vascular cambium and cork cambium

Front 19

What is the pirmary difference between dictorsw and monocot roots?

Back 19

absence of secondary growth in monocots

Front 20

What is the main function of leaves?

Back 20

functioning as a principal organ of photosynthesis and transpiration in most plants.