Systems in PlantsSystems in Plants

Nelson 4.1 pg. 125-128Nelson 4.1 pg. 125-128

Plants Plants They are multicellular organismsThey are multicellular organisms They include mosses, ferns, conifers and They include mosses, ferns, conifers and

flowering plantsflowering plants They have two distinguishing features: They have two distinguishing features:

they are green in colour and can not they are green in colour and can not move from place to placemove from place to place

What causes their green colour?What causes their green colour? - chlorophyll from their chloroplast - chlorophyll from their chloroplast

organelleorganelle

Plants perform photosynthesis to make Plants perform photosynthesis to make their own foodtheir own food

What do plants require in order to What do plants require in order to survive?survive?

Plants need to exchange gases with their Plants need to exchange gases with their surroundingssurroundings

Plants require an internal transportation Plants require an internal transportation system to move water and nutrients system to move water and nutrients around within their bodiesaround within their bodies

They must have a way of reproducingThey must have a way of reproducing

Flowering plants have two main body Flowering plants have two main body systems: a root system and a shoot systems: a root system and a shoot systemsystem

What is the root system made up of?What is the root system made up of? What is the shoot system made up of?What is the shoot system made up of?

Main types of Plant Main types of Plant Tissue SystemsTissue Systems

Dermal tissue system: is the tissue that Dermal tissue system: is the tissue that forms the outer surface of the plantforms the outer surface of the plant

Vascular tissue system: is made up of Vascular tissue system: is made up of tissue that transports water, minerals and tissue that transports water, minerals and nutrients throughout the plantnutrients throughout the plant

Ground tissue system: make up all the Ground tissue system: make up all the other structures within a plantother structures within a plant

The Root SystemThe Root System

This is part of the plant that grows below This is part of the plant that grows below the groundthe ground

This system anchors the plant, absorbs This system anchors the plant, absorbs water and minerals from the soil and water and minerals from the soil and stores foodstores food

Which roots do we eat as food?Which roots do we eat as food? - radishes- radishes -carrots-carrots

The Shoot SystemThe Shoot System

This system is specialized to conduct This system is specialized to conduct photosynthesis and produce flowers for photosynthesis and produce flowers for sexual reproductionsexual reproduction

The shoot system of flowers is made up The shoot system of flowers is made up of three parts. What are they?of three parts. What are they?

- leaf- leaf - flower- flower - stem- stem

The LeafThe Leaf

Look at this leaf!!! This leaf grows in the rainforests of Panama

The LeafThe Leaf This is where photosynthesis occursThis is where photosynthesis occurs Light energy + carbon dioxide+ water Light energy + carbon dioxide+ water chlorophyll-chlorophyll- glucose glucose

+ oxygen+ oxygen

The chloroplast is the organelle that The chloroplast is the organelle that performs photosynthesisperforms photosynthesis

Chloroplasts

ChloroplastChloroplast

Chloroplasts contain flat, disc-like Chloroplasts contain flat, disc-like structures called thylakoidsstructures called thylakoids

Thylakoids are arranged in stacks called Thylakoids are arranged in stacks called granagrana

The grana are the solar collectors using The grana are the solar collectors using chlorophyll to convert sun energy into chlorophyll to convert sun energy into glucoseglucose

Leaves are used in a variety of ways Leaves are used in a variety of ways such as…..such as…..

- food- food - medicine- medicine - clothing ( i.e. hats)- clothing ( i.e. hats)

The FlowerThe Flower

Flowers are specialized for sexual reproductionFlowers are specialized for sexual reproduction Flowers contain male / female reproductive Flowers contain male / female reproductive

structures structures The male reproductive structure produce pollen The male reproductive structure produce pollen

grainsgrains The female reproductive structure produces The female reproductive structure produces

eggseggs Eggs are fertilized by pollenEggs are fertilized by pollen After pollination, the female flower forms seedsAfter pollination, the female flower forms seeds

Reproductive Flower Reproductive Flower PartsParts

A portion of the flower sticks out

Female Flower PartsFemale Flower Parts

Female parts

Pollination occurs with the help of wind or Pollination occurs with the help of wind or animalsanimals

Which flowering plants use the wind for Which flowering plants use the wind for pollination?pollination?

- grasses- grasses - trees- trees Which types of flowering plants use animals for Which types of flowering plants use animals for

pollination?pollination? - most flowers that are colourful will attract - most flowers that are colourful will attract

animalsanimals Did you know…Did you know…

Rice, wheat, corn, vanilla, chocolate, coffee, Rice, wheat, corn, vanilla, chocolate, coffee, bananas, apples, mangos, cotton originate from bananas, apples, mangos, cotton originate from flowersflowers

The StemThe Stem The stem has several functions such asThe stem has several functions such as

Supports the branches, leaves, and Supports the branches, leaves, and flowers and provides a way to flowers and provides a way to transport materialstransport materials

The stem has a significant amount of The stem has a significant amount of vascular tissue to carry substances to vascular tissue to carry substances to and from roots, leaves, flowers and and from roots, leaves, flowers and fruitsfruits

Your TurnYour Turn

List the foods that come from List the foods that come from plant stems.plant stems.

Copy In Summary pg. 128Copy In Summary pg. 128

Do pg. 128 # 1-7Do pg. 128 # 1-7