Botany

Anatomy of Plants
(Gale In Context: Science)
Reference article contains a comprehensive overview of plant anatomy with color graphics and glossary

Debate Blooms over Anatomy of the World's First Flower
(Gale In Context: Science)
Article discusses a project called eFLOWER, which combined a database of plant traits, molecular data on evolutionary relationships, and statistical models to determine what the ancestor of all modern flowering plants might have looked like. 

Flower
(Gale In Context: Science)
Brief reference article describes the structure of flowers and why reproduction is key to classification.

Plant Cell
(Gale In Context: Science)
Comprehensive description of the characteristics and functions of plant cells.

Roots
(Gale In Context: Science)
Detailed discussion of the functions, anatomy, and growth of plant roots, including color graphics and a glossary.

Shape and Form of Plants
(Gale In Context: Science)
Comprehensive reference article discusses the great range and forms of plants. Special focus on meristems, contribution of the stem, and contribution of the leaf.

Shoots
(Gale In Context: Science)
Brief reference article that describes the organ system that gives rise to stems, leaves, and flowers, and which is functionally responsible for food production (photosynthesis) and reproduction

Wood Anatomy
(Gale In Context: Science)
Summary: Wood is the plant tissue produced by secondary growth from cell division in the vascular cambium. Secondary growth makes a plant grow wider; it occurs in tree trunks, which get wider every year of a tree's life. Wood grows in concentric rings, which are visible as tree rings on a cross-section of tree trunk. Wood is hard and mostly dead.

The Anatomy of Flowering Plants 
(CREDO Reference)
Text accompanies brief (2:12) video which describes the common anatomy and structure of flowering plants, and the differences between ligneous and herbaceous plants.

Beyond Mendelian Genetics Complex Patterns of Inheritance
(Gale In Context: Science)
Intro: "Mendelian genetics...taught us about dominant and recessive alleles and the laws that govern their inheritance. But things are not always so simple. There are situations that go beyond this basic structure, with things like pleiotropy, epistasis, and polygenic inheritance."

Organization in Plants
(Gale In Context: Science)
Briefly describes plant structures and introduces types of plant tissues.

Plant Tissues
(Gale In Context: Science)
Continuation of the Organization in Plants video, describes the processes of seed germination and growth, and the types of tissues involved in plant growth.