Pakistan's best MCQs practice hub — FPSC · PPSC · CSS · NTS · Other Exams
Login

Stomata, tiny pores commonly found on the surface of plant leaves, primarily serve what important function?

AAllowing for the exchange of gases, such as carbon dioxide and oxygen, as well as water vapor loss
BAbsorbing sunlight directly for photosynthesis
CProducing the green pigment chlorophyll
DTransporting sugars throughout the plant

Explanation

Stomata are tiny pores commonly found on the surface of plant leaves, particularly the underside, that primarily allow for the essential exchange of gases between the plant and the surrounding atmosphere, including taking in carbon dioxide needed for photosynthesis and releasing oxygen produced as a byproduct, as well as allowing water vapor to escape during the process of transpiration. Each individual stoma, the singular form of stomata, is surrounded by a pair of specialized guard cells that can open or close the pore in response to changing environmental conditions, helping the plant balance its ongoing needs for gas exchange against the risk of excessive water loss. This dynamic regulation of stomata is an important adaptation that helps plants survive under a range of different environmental conditions. Explore more Everyday Science MCQs on mcqstutor to keep practicing.

Submitted by: mcqstutor Team More Everyday Science MCQs →

No Comments

Leave a comment

Your email address will not be published. Required fields are marked *