Please wait...
1800-212-7858 (Toll Free)
9:00am - 8:00pm IST all days
For Business Enquiry


Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this toll free number


Mon to Sat - 11 AM to 8 PM

(a) Write three main steps that take place in chloroplast during photosynthesis.

(b) How does stomata open and close?

(c) Which raw material is made available to plants for photosynthesis when stomata are open?

Asked by Topperlearning User 24th July 2017, 4:24 PM
Answered by Expert

(a) The steps that takes place in chloroplast during photosynthesis are:

(i) Absorption of light energy by chlorophyll.

(ii) Conversion of light energy into chemical energy, and splitting of water into hydrogen and oxygen using light energy.

(iii) Reduction of carbon dioxide by hydrogen to form carbohydrate like glucose by utilizing the chemical energy.

(b) The opening and closing of stomata is controlled by guard cells. When water flows into the guard cells, they swell, become curved and cause the stomata to open. When the guard cells loses water, they shrink, become flacid and straight thus closing the stomata.

(c) Carbon dioxide is made available to plants when stomata are open.

Answered by Expert 24th July 2017, 6:24 PM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Your answer has been posted successfully!

Chat with us on WhatsApp