Biodiversity and interdependence
Interdependency between animal and plant species
The community of organisms living in a biome are affected by abiotic, environmental factors and by the feeding relationship in their ecosystem.
The impact of adaptations and population growth on biodiversity
Learn how growth in populations as well as natural hazards can impact biodiversity and the role of adaptations.
Propagating and growing plants
Plants can be grown in large numbers by germinating seeds, or by growing bulbs or tubers. Cuttings can be taken from existing plants, and can be grafted onto the stock of another plant.
Designing an experiment to show different rates of aerobic respiration
Show the effects of different factors on the rate of aerobic respiration and explain your findings.
Nitrogen cycle
Nitrogen from the air is needed for the production of proteins. As animals eat plants so they receive the nitrogen, which is released and recycled by decomposition of dead organisms.
Fertiliser design and environmental impact of fertilisers
When plants are harvested, nutrients are removed from the soil. These can be replaced by natural fertilisers such as manure or by NPK fertilisers containing nitrogen, phosphorous and potassium.
Video playlist
Adaptation of birdcage plant, puffball and star fungi. Video
How can air be used to disperse seeds and spores?
Adaptations of animals and plants. Video
An introduction to the adaptations of some marine and terrestrial animals and plants.
Biodiversity and the human implications. Video
Why is conserving biodiversity important for human existence?
Adaptation of plant life to extreme cold temperatures. Video
How is plant life adapted to survive in freezing Arctic temperatures?
