B4 2.0 / 5 based on 1 rating ? BiologyGCSEOCR Created by: Grace MartinsonCreated on: 22-04-13 17:46 Whats Osmosis? A kind of diffusion. The movement of water across a peremeable membrane. 1 of 16 What minerals are needed for healthy growth? Nitrate, Phosphate and Potassium. 2 of 16 What is Transpiration rate affected by? increase in temperature, decrease in humidity 3 of 16 What is Decay caused by? microorganisms such as bacteria and fungi 4 of 16 What does the rate of decay depend on? temperature, oygen and water 5 of 16 What methods of preserving are there? cooling, canning and freezing 6 of 16 What are the transport systems in plants for food and water? via xylem vessels (water) or phloem vessels (food) 7 of 16 What is Biodiversity? Measure of variety of organisms in an area, for example, no. of habitats, no. of species or variation of the same species 8 of 16 Which has a greater level of biodiversity? Natural or Artificial environment? Natural 9 of 16 How are leaves adpted to photosynthesis? Big surface area to absorb light, thin for absorbing and releasing 10 of 16 Ecosystems are self supporting, what is the only energy source they rely on? The sun 11 of 16 What are the disadvantages of pesticides? They affect food chains because they kill animals as well as pests 12 of 16 What is Biological Control? Introducing a disease to kill a pest 13 of 16 What is Zonation? Gradual change in distribution of species in a habitat 14 of 16 What is Intensive Farming? Battery farming of animals. It produces more food. Uses herbicides and pesticides 15 of 16 What are alternatives to Intensive Farming? Organic methods such as menure, compost 16 of 16
Comments
No comments have yet been made