Determining the content of oxalic acid in rhubarb Animation Play

Development of seed plants Slideshow Play

Development of vegetative organs Slideshow Play

Developmental stages of seed plants Student activity Play

Differences between cell division in animal and plant cells Whiteboard exercise Play

Differences between cell division in animal and plant cells Student activity Play

Different modes of reproduction in invertebrates Slideshow Play

Different types of chemical energy Slideshow Play

Different types of immunity Student activity Play

Digestion Class activity Play

Digestion in the alimentary canal Illustration Play

Digestion of carbohydrates; proteins and lipids Student activity Play

Digestive enzymes Whiteboard exercise Play

Digestive enzymes and chemical digestion Whiteboard exercise Play

Digestive enzymes and digestion Student activity Play

Dioxins Student activity Play

Distribution of stomata in different types of plant Slideshow Play

Diversity of angiosperms Slideshow Play

Dry plant mass Illustration Play

Duodenum Animation Play

Elements of Group 17 Student activity Play

Energy input and energy output Animation Play

Energy transfer Student activity Play

Environmental factors necessary for germination Student activity Play

Environmental factors that affect plants Whiteboard exercise Play