TUTTEE ACADEMY LOGO
broken image
  • Home
  • About Us
  • Subjects 
    • CHEMISTRY
    • BIOLOGY
    • PHYSICS
    • MATHEMATICS
    • PSYCHOLOGY
    • ECONOMICS
    • BUSINESS
    • COMPUTER SCIENCE
    • CHINESE
    • ENGLISH
    • SPANISH
    • IBDP IA / EE
    • IBDP TOK
    • ONLINE TUTORIAL
  • Exam Boards 
    • IBDP
    • IBMYP
    • IGCSE & GCSE
    • HKDSE
    • GCE A-LEVELS
  • Courses 
    • IBDP Tuition
    • GCE A-Level Tuition
    • IBMYP Tuition
    • I/GCSE Tuition
    • HKDSE Tuition
  • Admission Test Prep 
    • PREDICTED GRADE
    • SAT / SSAT
    • UKISET (UK)
    • BMAT
    • UKCAT / UCAT
    • LNAT
    • TMUA (Cambridge)
  • Student Results 
    • IBDP STUDENT RESULTS
    • IGCSE & GCSE MATHEMATICS
    • A-LEVEL STUDENT RESULTS
    • IGCSE STUDENT RESULTS
    • GCSE STUDENT RESULTS (UK)
    • HKDSE STUDENT RESULTS
    • OUR STORIES
  • Question Bank
  • Resources
SCHEDULE A LESSON NOW

BIOL - How Photosynthesis Happens in Leaves🍃

Biology, photosynthesis, leaf structure - IGCSE | IBDP | DSE | GCE | IAL | AP Biology

· biology,photosynthesis,leaf

Photosynthesis

  • Plants make their own food by photosynthesis. 
  • The food that plants make through photosynthesis is a type of sugar called glucose. 
  • During photosynthesis, plants use carbon dioxide and water to produce glucose and oxygen, using sunlight as energy.
  • Sunlight is absorbed by green pigments called chlorophyll, which is located in chloroplasts of plant cells.

👇 For IGCSE Biology, you should be familiar with the word and balanced chemical equation for photosynthesis 👇

broken image

Structure of Leaves

Most of the photosynthesis happens at leaves of plants, so structure of leaves are adapted for photosynthesis.

broken image

👇 Frequently asked in IGCSE Biology... 👇

How the structures of leaves🌿 are adapted for photosynthesis:

  •  Wide and flat leaves: Increases surface area to capture as much light as possible
  • Thin leaves: Carbon dioxide can reach cells easily
  • Network of veins in leaves: Transports water to leaves and glucose away from leaves
  • Waxy cuticle: Prevents water loss through evaporation while still absorbing sunlight
  • Thin and transparent epidermis: Allows more light to reach palisade mesophyll, where much of photosynthesis happens in leaves
  • Numerous chloroplasts in palisade mesophyll: Increases the rate of photosynthesis with many chlorophylls capturing a lot of sunlight 
  • Air spaces in spongy mesophyll: Allows carbon dioxide and oxygen to diffuse in and out of leaves faster
  • Guard cells and stomata: Opening stoma by controlling guard cells allows carbon dioxide to enter leaves and oxygen to go out of leaves

Factors that Affect the Rate of Photosynthesis

  1. Light intensity: As light intensity increases, the rate of photosynthesis increases until other factors start to limit the rate of photosynthesis.
  2. Carbon dioxide concentration: As concentration of carbon dioxide increases, the rate of photosynthesis increases until other factors start to limit the rate of photosynthesis.
  3. Temperature: Photosynthesis is controlled by enzymes. To a certain temperature, the rate of photosynthesis increases as temperature increases. However, when the temperature gets too high, enzymes denature and cannot function anymore, so the rate of photosynthesis drops.
broken image

Wanna Boost Up Your IGCSE Biology?

SIGN UP FOR A FREE TRIAL NOW
Subscribe
Previous
BIOL - Excretion of Waste Through the Urinary System
Next
BIOL - Hormones Involved in Menstrual Cycle and Pregnancy
 Return to site
Profile picture
Cancel
Cookie Use
We use cookies to improve browsing experience, security, and data collection. By accepting, you agree to the use of cookies for advertising and analytics. You can change your cookie settings at any time. Learn More
Accept all
Settings
Decline All
Cookie Settings
Necessary Cookies
These cookies enable core functionality such as security, network management, and accessibility. These cookies can’t be switched off.
Analytics Cookies
These cookies help us better understand how visitors interact with our website and help us discover errors.
Preferences Cookies
These cookies allow the website to remember choices you've made to provide enhanced functionality and personalization.
Save