Here are some books that you may find useful during your studies. Search the Bennies catalogue Accessit for more, or browse the Non-fiction collection NFS.
The effect of soil mositure on plant growth.
How Does Water Affect Plants?. Water is an essential element which all plants need for basic survival. Some plants require more water and some less, depending on their genetic makeup. But it's that right balance which each plant needs to help it function, along with soil and sun.
Stomata, the microscopic pores surrounded by a pair of guard cells on the surfaces of leaves and stems, play an essential role in regulating the gas exchange between a plant and the surrounding atmosphere. Stomatal development and opening are significantly influenced by environmental conditions, both in the short and long term.