Deductive reasoning and Venn diagrams Student activity Play

Defence mechanisms in plants Slideshow Play

Deficiency of macro-elements Whiteboard exercise Play

Determination of object size using the light microscope Student activity Play

Determining the concentration of a solution using redox titration (1) Student activity Play

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

Dioxins Student activity Play

Disorders related to the undersecretion and oversecretion of growth hormone Slideshow Play

Distribution of stomata in different types of plant Slideshow Play

Diversity of angiosperms Slideshow Play

Drugs and health Whiteboard presentation Play

Dry plant mass Illustration Play

Effect of light on the growth of food plants Slideshow Play

Effects of growth hormone on metabolism Slideshow Play

Effects of macro-element deficiencies Simulation Play

Effects of macro-element deficiencies Student activity Play

Elements of Group 17 Student activity Play