Bio 006: 7LA - Cell Respiration & Plant Tissues

Cell Respiration

Process of converting glucose into energy.

Metabolism

Chemical processes for maintaining life.

Plant Tissues

Groups of cells performing specific functions.

Tissue

Collection of cells with common structure and function in an organism.

Indeterminate Growth

Continuous growth throughout an organism's life.

Meristematic Tissue

Embryonic tissue responsible for plant growth (forever young)

Permanent Tissue

Mature tissue that has fully differentiated (mature/ evolved)

• Simple tissues: made of 1 cell type

• Complex tissues: made of multiple cell types

Apical Meristem

• Tip of stem and root

• Responsible for primary growth

• Increases length

Lateral Meristem

• Sides of stems and roots

• Responsible for secondary growth

• Increases width

Primary Growth

Growth that increases length of plant; develops first

Secondary Growth

Growth that increases width of plant; develops second/later

Protoderm

Forms the epidermis from apical meristem.

Ground Meristem

Inside protoderm; forms ground tissue from apical meristem.

Procambium

Forms primary vascular tissue from apical meristem.

Vascular Tissue

Transport system for water and nutrients. (bundle cap, phloem, xylem, fascicular cambium)

Phloem

Transports sugars and food throughout the plant.

Xylem

Transports water and minerals from roots.

Parenchyma

Big, thin-walled cells used for storage.

(Simple Permanent Tissue)

Collenchyma

Cells providing support with irregular walls, used for support/protection

(Simple Permanent Tissue)

Sclerenchyma

Thick-walled cells for structural support/protection

• Fibers: long and narrow

• Sclereids: clumped

Sieve Tube Element

Main component of phloem for transport.

• big tube

• forms sieve tube

Vessel Elements

Main component of xylem for water transport.

Tracheids

Xylem cells with pores for horizontal transport.

Control Group

Group without treatment for comparison.

Anaerobic Respiration

Energy production without oxygen, like fermentation.

Vascular cambium

Secondary vascular tissue secondary xylem (inside) & phloem (outside)

Cork cambium

Replaces epidermis with periderm/cork (bark)

companion cells

Edge of sieve tube, control flow

Sieve plate

Looks like a sieve, sits between cells in tube

5

How many cells are participating in Phloem?

4

How many cells are participating in Xylem?

xylem vessel

• one-way only

• water and minerals

• no end walls between cells

• thick walls stiffened with lignin

phloem vessel

• two-way flow

• water and food

• cells have end walls with perforations

Vascular bundles

identify image

(hint: looks like a candy corn)