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

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

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

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

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

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

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

All the petals are collectively referred to as the corolla Next Flower Part

Anthers produce pollen required for pollination Next Flower Part

Filament Next Flower Part

Sepals are collectively called the calyx Next Flower Part

When pollination occurs, pollen attaches to the stigma Next Flower Part

A tube from the pollen extends through the style to each ovule to deliver the male gamete to the ovule Style Next Flower Part

Ovary Next Flower Part

Ovules develop into seeds when fertilized by pollen Next Flower Part

Peduncle Next Flower Part

Male (Staminate) Flower Parts Anther Stamen Filament Next Flower Part

Female (Pistillate) Flower Parts Flowers can have multiple pistils (also called carpels) that can be separate or fused together Stigma Style Pistil or Carpel Ovary Ovule Next Flower Part

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

Terminal Bud Next Stem Part

Lateral Bud Next Stem Part

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

Lenticels are thought to allow air into the plant interior Next Stem Part

Bud Scale (One of five visible) Bud Scale (One of three visible) Next Stem Part

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

The vascular bundle traces show where the zylem entered the leaf petiole Next Stem Part

The Pith is the central core of the stem Next Stem Part

Leaf Practice Quiz How many leaves are in this diagram? Answer

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

Leaf Practice Quiz A C B What are the names of A, B and C? Answer

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

Leaf Practice Quiz A B Which is a palmately compound leaf and which is a pinnately compound leaf? Answer

Leaf Practice Quiz A B A – Pinnately Compound B – Palmately Compound Next Question

Leaf Practice Quiz A B C Which leaf arrangement is opposite, alternate, and whorled? Answer

Leaf Practice Test A - Opposite B - Whorled C - Alternate Use Browser’s back button or press the ESC key to exit Back to Page 1