AQA A Level Biology復(fù)習(xí)筆記6.1.4 Taxis & Kinesis
Taxis & Kinesis An organism must?find favourable living conditions in order to survive For complex organisms like monkeys and wolves, this seems like an easy process They possess eyes, e...
AQA A Level Biology復(fù)習(xí)筆記6.1.3 Indoleacetic Acid (IAA)
Indoleacetic Acid (IAA) Indoleacetic acid (IAA) is a?specific growth factor?found in plants IAA is synthesised in the growing tips of roots and shoots (ie. in the meristems, where cells are ...
AQA A Level Biology復(fù)習(xí)筆記6.1.2 Growth Factors in Flowering Plants
Growth Factors in Flowering Plants Growth responses in plants Just like animals, the survival of plants is dependent on their ability to?respond to changes?in their environment Some plants p...
AQA A Level Biology復(fù)習(xí)筆記5.4.4 Fertilisers
The Use of Natural & Artificial Fertilisers When organisms in natural ecosystems?die?or produce?waste, the waste and dead matter?decompose This decomposition is carried out by?saprobiont...
AQA A Level Biology復(fù)習(xí)筆記5.4.3 Microorganisms Role in Recycling Minerals
Microorganisms Role in Recycling Minerals In natural ecosystems,?nutrients?(such as nitrogen and phosphorus) are?recycled?through food webs For example, these nutrients get passed on from?pr...
AQA A Level Biology復(fù)習(xí)筆記5.4.2 Practical Skill: Investigate the Effect of Minerals on Plant Growth
Practical Skill: Investigate the Effect of Minerals on Plant Growth Photosynthesis produces carbohydrates Carbohydrates contain the chemical elements carbon, hydrogen and oxygen, which can b...
AQA A Level Biology復(fù)習(xí)筆記5.3.10 The Effect of Farming
How Production is Affected by Farming Practices Farming practices can?increase?the?efficiency of energy transfer?in order to increase the total amount of energy available for?human consumpti...
AQA A Level Biology復(fù)習(xí)筆記5.3.9 Percentage Yield
Maths Skill: Calculating Percentage Yield Farmers use various strategies to increase the?yield?of their crops or livestock. These strategies include: Reducing energy losses?from crops to?oth...
AQA A Level Biology復(fù)習(xí)筆記5.3.8 Calculating Productivity & Efficiency
Maths Skills: Calculating Productivity and Efficiency within Ecosystems Given the appropriate data, it is possible to calculate the?net productivity?of?producers?or?consumers?and the?efficie...
