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Petal - PowerPoint PPT Presentation


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Angiosperm Perfect Flower Perfect flowers have both male (staminate) and female (pistillate) reproductive parts. Petal. Male Parts. Anther. Female Parts. Stamen . Filament. Stigma. Pistil or Carpel. Style. Ovary. Ovule. Sepal. Peduncle. To Next Page. Angiosperm Woody Stem.

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Presentation Transcript
slide1

Angiosperm Perfect Flower

Perfect flowers have both male (staminate) and female (pistillate) reproductive parts

Petal

Male Parts

Anther

Female Parts

Stamen

Filament

Stigma

Pistil

or

Carpel

Style

Ovary

Ovule

Sepal

Peduncle

To Next Page

slide2

Angiosperm Woody Stem

Terminal Bud

One year’s growth

Lateral Bud

Terminal Bud Scale Scar

Bud Scale - three are visible in this drawing

Bud scales are small scale-like modified leaves that cover the bud during its winter dormancy.  When the terminal bud breaks dormancy in the spring, these bud scales are shed, leaving behind the scars where they were attached.

Leaf Scar

Vascular Bundle Traces

Pith

Lenticel

To Next Page

slide3

Leaf Arrangement

Alternate

Opposite

Whorled

Alternate – Leaves and buds are spaced in alternating fashion along the stem

Opposite – Leaves and buds are directly across from each other on the stem

Whorled – Three or more leaves and buds are present at a single node

To Next Page

slide4

Simple Leaf

Midrib

Blade

Leaf

Petiole

Stipule

Bud

Stem

KEY POINT: A leaf will ALWAYS have a bud at the base of the petiole.

If it does not have a bud, it is leaflet, not a leaf.

To Next Page

slide5

Compound Leaf

Leaflet

No Bud

Rachis

Leaflet

Petiolule

Stem

Bud

Because the bud is at the base of the rachis, not at the base of the petiolule, this diagram does not show seven simple leaves, but instead a single compound leaf comprised of seven leaflets

To Next Page

slide6

Types of Compound Leaves

Bud

Bud

Pinnately Compound

Palmately Compound

In a palmately compound leaf, each leaflet is attached to a common point on the rachis, but leaflets in a pinnately compound leaf are not.

To Practice Quiz

slide7

Practice Quiz

Name a flower part then click on the letter to see if you are correct

A

B

C

E

F

G

H

D

I

Show Male (Staminate) Parts

Show Female (Pistillate) Parts

To Practice Quiz on Twig Parts

slide10

Filament

Next Flower Part

slide13

A tube from the pollen extends through the style to each ovule to deliver the male gamete to the ovule

Style

Next Flower Part

slide14

Ovary

Next Flower Part

slide16

Peduncle

Next Flower Part

slide17

Male (Staminate) Flower Parts

Anther

Stamen

Filament

Next Flower Part

slide18

Female (Pistillate) Flower Parts

Flowers can have multiple pistils (also called carpels) that can be separate or fused together

Stigma

Pistil

or

Carpel

Style

Ovary

Ovule

Next Flower Part

slide19

Twig Practice Quiz

Name a flower part then click on the letter to see if you are correct

A

I

B

C

E

F

D

G

H

To Leaf Practice Quiz

slide20

Terminal Bud

Next Stem Part

slide21

Lateral Bud

Next Stem Part

slide22

Next year’s terminal bud scale scar will appear here when the scale falls off

One year’s growth

Terminal Bud Scale Scar from last year’s terminal bud

Next Stem Part

slide24

Bud Scale

(One of five visible)

Bud Scale

(One of three visible)

Next Stem Part

slide25

A leaf scar shows where the previous year’s leaf was attached to the stem

Leaf Scar

Leaf Scar

Next Stem Part

slide26

The vascular bundle traces show where the zylem entered the leaf petiole

Vascular Bundle Traces

Next Stem Part

slide28

Leaf Practice Quiz

How many leaves are in this diagram?

Answer

slide29

Leaf Practice Quiz

Bud

There is only one leaf pictured here. If this diagram pictured seven simple leaves, there would be a bud at the base of every leaf. Since there is only one bud this must be a single compound leaf

Next Question

slide30

Leaf Practice Quiz

A

C

B

What are the names of A, B and C?

Answer

slide31

Leaf Practice Quiz

A. Petiole

C. Petiolule

B. Rachis

To answer this correctly you must first identify which is a simple leaf and which is a compound leaf by looking for the leaf bud.

In a simple leaf, the blade is attached to the petiole. In a compound leaf, the leaflet is attached to the petiolule. The petiolule is attached to the rachis.

Next Question

slide32

Leaf Practice Quiz

A

B

Which is a palmately compound leaf and which is a pinnately compound leaf?

Answer

slide33

Leaf Practice Quiz

A

B

A – Pinnately Compound

B – Palmately Compound

Next Question

slide34

Leaf Practice Quiz

A

B

C

Which leaf arrangement is opposite, alternate, and whorled?

Answer

slide35

Leaf Practice Test

A - Opposite

B - Whorled

C - Alternate

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