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Which diagram shows cells that swell, creating an opening during daylight conditions? A B C D - OCR Gateway - GCSE Biology - Question 7 - 2020 - Paper 1
Question 7
Which diagram shows cells that swell, creating an opening during daylight conditions? A B C D
Worked Solution & Example Answer:Which diagram shows cells that swell, creating an opening during daylight conditions? A B C D - OCR Gateway - GCSE Biology - Question 7 - 2020 - Paper 1
Step 1
Which diagram shows cells that swell, creating an opening during daylight conditions?
Answer
The correct diagram that shows cells swelling to create an opening during daylight conditions is diagram C.
In plant biology, this process typically involves guard cells that surround stomata. When the plant is exposed to daylight, guard cells take up water via osmosis, causing them to swell. This swelling results in the stomata opening, allowing for gas exchange (such as carbon dioxide entering the leaf for photosynthesis) while preventing excess water loss.