Plants Plants are photosynthesis machines. They depend on sunlight and store chemical energy (usually in the form of sugars) to be used later. Later you will see that all plants and animals are closely related by used the same products and reactants.
Processes in plants There are 5 physiological processes for plants: ◦Photosynthesis ◦Cell respiration ◦Transpiration ◦Growth ◦Reproduction All plant organs are used for one of these purposes.
4 Plant Tissues The dermal tissue is the outer layer of cells of the plant/leave. Special epidermal cells, called guard cells, surround pores in leaves. The pores in leaves are called stomata (singular stoma), this is where gas exchange occurs. The gases are water loss, CO 2 uptake, and O 2 release or uptake
4 Plant Tissues Meristematic – tissue in plant cells that are designed to reproduce and grow. Ground – provides most of support in interior of plants. Stores materials as well. Vascular – surrounded by ground tissue and transports water in the plant. (Made of xylem and phloem.)
Roots Root cap – Tip of a root that has growing tissues and has the newest cells. Root hairs – Small hairs that come off of the root that draw more water into the root (more surface area) Xylem – carries water and dissolved minerals up from roots. Phloem – carries products of photosynthesis around cell.
Reproductive Organs Stamen – Male sexual organ of plants (made of filament and anther) Pistil – female sexual organ for plants (stigma, style, ovary) Egg – contained within the ovary Sepal – supports the petals Petals – attract insects to plant (flowery part)