Which factor could cause species A to have a higher rate of transpiration than species B?

Transpiration is the loss of water vapour from a plant, primarily through the stomata in the leaves. Several factors can affect the rate of transpiration. - **Number of stomata:** Stomata are the pores for gas exchange and water loss. A plant with more stomata per unit area of leaf will have a higher maximum rate of transpiration because there are more openings for water vapour to escape. - **Number of leaves/surface area:** A larger leaf surface area also increases the rate of transpiration. - **Petals** are involved in attracting pollinators and have no role in transpiration. - **Shorter roots** would limit water uptake, which would reduce, not increase, the transpiration rate.