14_1 Plant Anatomy

8/9/2019 14_1 Plant Anatomy

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14.0 Describe Principles of Plant

Growth Production

14.1 Identifying plant parts and their

function.


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Why are plants important?

Provide oxygen

Prevent famine Provide medicine


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How are plants used in

agriculture?

Crops

Cereal Grains - wheat, rice Ornamental

Landscape design - indoors and

outdoors Medicine

Biotechnology, possible cures


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What are 5 major parts of a

flowering plant?

Leaves

Stems Roots

Flower

Fruit


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Why are leaves important?

Collect light

Site of photosynthesis Main site of transpiration


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What are the parts of a leaf?

Blade: helps with

collecting the suns rays

Veins: transport water

and nutrients

midrib: central vein

Petiole:point of

attachment to the stem Nodes: will grow if the

petiole is removed


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Why is the stem important?

Produce and support new leaves

Transport water and nutrients toand from the roots

Storage of nutrients


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What are the parts of a stem?

Terminal bud:

point of new

growth

Lateral bud: point

of new growth

Internode: in-between points of

growth

Leaf scar

Bud scale scar


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Why are the roots important?

Provide anchor for the plant

Absorb water and nutrients Storage of nutrients and water


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What are the three types of roots?

Taproot: absorbs water

deep in the ground -

carrots, pecan trees

Fibrous roots: roots stayclose to top soil -

tomato, bedding plants

Adventitious: helpsplant climb or anchor -

ivy, strawberries, some

grasses.


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What are the parts of a root?

Primary root: the

first root to grow

Secondary roots:

branch off of the

primary root

Root hairs: these

account for 95% ofwater absorption


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Why are flowers important to the

Plant?

Flowers serve as the reproductive

organ of the plant


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Why is Fruit important to plants?

The site of seed production, fruit also

plays a role in the dissemination of theseeds


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Parts of a Flower


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Parts of a Flower

Stamen Male Part Anther - pollen-producing structure

Filament - stalk that supports the anther

Pistil Female Part

Stigma - place where sticky pollen grains aredeposited

Style - tube where the pollen grains travelfrom the stigma to the ovary

Ovary - base of the pistil, where the pollengerminates with the ovules, this becomes thefruit

Ovules - individual eggs, these are the plant

seeds


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Flower Parts

Petal modified leaves that serve to

attract insects for pollination

Sepal protects the inner parts of

the flower bud from rain,

mechanical injury and insects

Receptacle the base where all the

flower structures are attached

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14_1 Plant Anatomy