Fin 2

54問 • 1年前

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Vascular tissue system

Dermal tissue system, Vascular tissue system, Ground tissue system

outermost layer provides a covering for the plant body and facilitates water and ion uptake in roots and regulates gas exchange in leaves and stems

Dermal Tissue System

conducting tissue, transport; strengthening and supporting the plant • Xylem • Phloem

Vascular Tissue System

bulk of inner layers photosynthesis, storage, and support • cortex, mesophyll, pith

Ground Tissue System

Storage of cellular metabolites Capable of meristematic activity

Parenchyma

Provide support Capable of meristematic activity

Collenchyma

sclereids and fibers - Provide support

Sclerenchyma

Lateral water and solute transport in xylem

Tracheids

Lateral and longitudinal water and solute Transport in xylem

Vessel elements

Transport of photosynthetic products

Sieve elements

Provide energy to sieve elements for transport

Companion cells

Cells

Parenchyma, Collenchyma, Sclerenchyma, Tracheids, Vessel elements, Sieve elements, Companion cells

Portions of a plant that are producing more energy (sugar) than they are consuming

Source

Net consumer of energy

Sink

Movement of the products of photosynthesis by the phloem

Translocation

Carbohydrate transfer

Translocation

Process of converting light energy to produce chemical energy (suga

Photosynthesis

Formula of photosynthesis

6CO2- 6H2O= C6H12O6- 6O2 Carbon dioxide - Water = Sugar(Glucose) - Oxygen

Long distance transport of carbohydrates is mostly in the ______ and in the form of ______.

phloem , sucrose

Formula of sucrose

Glucose + Fructose

Ability for an organ to unload the sugar from the phloem determines the sink strength or flow of sucrose.

Strength of Sugar Attraction

Site of actively dividing cells forming new tissue, and typically found at the growing tips of roots and shoots.

Meristems

Types of meristems

Apical meristem, Lateral meristem

Since _________ will increase sink size, the source-sink relations will affect the entire plant

cell division

Vessel with two way flow

phloem

Vessel with one way

xylem

are elongated and narrow cells that are connected together to form the phloem’s sieve tube structure.

sieve elements

Lack nucleus at maturity and are also lacking in organelles such as

ribosomes, cytosol, tonoplast, Golgi apparatus

________ are located in between the connections of sieve member cells, which are modified _________

Sieve plates, plasmodesmata

these are the areas of pores that help to facilitate the exchange of materials between the element cells.

Sieve plates

When the phloem is cut or damaged then in the prevention of loss of sap also act as a barrier, often by an insect or herbivorous animal.

sieve plates

After the injury, a unique protein called _________which is formed within the sieve element is released from its anchor site and accumulates to form a ‘____’.

Phloem-protein or P-protein, clot

All plant cells have the same basic Eukaryotic Organization: They contain _____, ______, _____ and They are enclosed In a membrane That defines its Boundarie

nucleus, cytoplasm, subcellular organelles

bounds a cell; one immediately within the wall of the cell

Plasma membrane

Each of the sieve element cells is closely associated with a?

Companion cell (angiosperms), Albuminous cell (gymnosperms)

Companion cells consist of a ______, that is filled with dense ______.

nucleus, cytoplasm

The cytoplasm is made up of numerous ?

ribosomes and mitochondria

are responsible for performing several metabolic reactions and other cellular functions.

Companion cells

The sieve tube and companion cells are connected via

plasmodesmata

The parenchyma is a collection of cells, which make up the

'filler’ of plant tissues.

They have thin and flexible walls that are made of cellulose.

Phloem Parenchyma

present in the phloem is the storage of starch, fats, and proteins and in the case of some plants, they help in the storage of tannins and resins also.

Parenchyma

A highly specialized process for redistributing

Phloem transport

A highly specialized process for redistributing:

Photosynthesis products, Other organic compounds (metabolites, hormones), some mineral nutrients

Any exporting region that produces photosynthate above and beyond that of its own needs

Source

any non-photosynthetic organ or an organ that does not produce enough photosynthate to meets its own needs

Sink

root is a sink during the first growing season

Beta maritima (wild beet)

4 Source-sink pathways follow patterns

Proximity, Development, Vascular connections, Modifications of translocation pathways

•Sucrose is formed when a monomer of glucose and a monomer of fructose are joined in a _________to form a glycosidic bond.

dehydration reaction

is mostly used for Transport in plants.

Sucrose

Carbohydrates transported in Phloem are all

nonreducing sugars

Reducing sugars, such as ________, ______ and _______ contain an exposed aldehyde or ketone group

Glucose, Mannose, Fructose

Reducing sugars, such as Glucose, Mannose and Fructose contain an _________ or ________

exposed aldehyde, ketone group

Nitrogen is found in the phloem mainly in:

amino acids (Glutamic acid), Amides (Glutamine)

Soil Tech Midterm 1

Mutated Lemon · 100問 · 2年前

Soil Tech Midterm 1