As plants are able to make their own food and pass different gases through their leaves, there is a tiny opening (or pore) that is used for this exchange of gases and or water vapor. This opening (pore) is found mostly on the under-surface of plant leaves and is called

stigma
petal
anther
stomata

stomata

The correct answer is "stomata." Stomata are small openings, typically found on the under-surface of plant leaves, which allow for the exchange of gases, such as carbon dioxide and oxygen, as well as the release of water vapor. Stomata also play an important role in regulating water loss through transpiration.

The correct answer is stomata. Stomata are tiny openings or pores found mostly on the under-surface of plant leaves. They are responsible for the exchange of gases (such as oxygen and carbon dioxide) between the plant and its environment. Stomata also regulate the loss of water vapor from the plant through a process called transpiration. They play a crucial role in photosynthesis, where carbon dioxide enters the plant and oxygen is released. To find the answer to this question, you could have used your knowledge of plant biology or conducted a quick internet search to confirm that stomata are the correct answer.