Biology Notes for IGCSE 2014 & 2024

 (0654) Coordinated Sciences 2023/2024 Subheadings and Key concepts photosynthesis investigating the need for chlorophyll light CO2 inve...

  Nitrate ion and magnesium are essential minerals for plant growth. Plants need: nitrate ions (NO3−) for making amino acids magnesium ions...

  The leaf is a complex structure that is highly specialized and adapted for photosynthesis!

  Glasshouses are used in some countries to control conditions for plant growth, especially when the local outside environment isn't ide...

  Variables tested: chlorophyll , light , carbon dioxide We use each variable as a limiting factor, which limits the amount of glucose made ...

Photosynthesis is: the process by which plants manufacture carbohydrates from raw materials  using energy from light

Here is a brief summary of previous topics. 

Plants need minerals for healthy growth. Plant is in need for mineral ions to control chemical activities, grow, and produce materia...

The leaf consist of a broad, flat part called the  lamina , which is joined to the rest of the plant by a leaf stalk or  petiole . Runni...

When plants are growing outside, we can not do much about changing the conditions that they need for photosynthesis. But if crops are g...

Limiting factor is something present in the environment in such short supply that it restricts life processes.    Three factors can l...

When the concentration of  CO 2  is low the rate of photosynthesis is also low. (the plant has to spend time waiting for more  CO 2  to arr...

When the temperature rises the rate of photosynthesis rises also. There is an optimum temperature  at which the rate of photosynthesi...

Plants need light energy to make the chemical energy needed to create carbohydrates.  Increasing the light intensity will boost the sp...

  Investigations to see if chlorophyll,  light and CO2 are needed for photosynthesis. 

Experiments can be used to find out what factors (CO 2 , light,  cholorophyll) are needed for photosynthesis. But first of all you n...

Photosynthesis  is the fundamental process by which plants manufacture food molecules ( carbohydrates ) from raw materials CO 2  and  H 2...