Pteridophytes - Biology Encyclopedia - plant, body, different, cycle, life, used, water, bacteria

Pteridophytes - Biology Encyclopedia - plant, body, different, cycle, life, used, water, bacteria: "Pteridophytes"

Bryophytes - Biology Encyclopedia - cells, plant, body, different, organisms, chromosomes, cycle, life, structure

Bryophytes - Biology Encyclopedia - cells, plant, body, different, organisms, chromosomes, cycle, life, structure: "Bryophytes"

Alternation of Generations - Biology Encyclopedia - cells, plant, body, human, organisms, cycle, life, types, make, form

Alternation of Generations - Biology Encyclopedia - cells, plant, body, human, organisms, cycle, life, types, make, form: "Alternation of Generations"

Angiosperms - Biology Encyclopedia - plant, body, animal, system, different, organisms, DNA, organs, water, separated

Angiosperms - Biology Encyclopedia - plant, body, animal, system, different, organisms, DNA, organs, water, separated: "Angiosperms"

Video lessons

The Khan academy has heaps of free instructional videos about Biology and other subjects.

The following is a good explanation of the sources of variation.

Internal assessment Bio 2.1 Prac

• Student work sheet
• Practical guide
• Trial experiment