Ap Bio Plants

892 words 4 pages
Roots support photosynthesis and respiration by absorbing minerals and water and by storing organic nutrients. They also anchor the plant. Some roots have mycorrhizae, which increase the surface area and therefore increase the absorption. The endodermis, which is the innermost layer of cells in the root cortex, surrounds the vascular cylinder. It is the passage of minerals from the cortex into the vascular tissue.
The stem has a system of nodes where leaves are attached. They have a waxy coating (epidermis) that prevents water loss. The stem and the roots are the 2 main axes in a vascular plant. Fluids are transported between the roots and the shoots through the stem by the phloem and xylem.
Leaves are the main photosynthetic
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It is responsible for photosynthesis and contains chlorophyll, which is why plants are green.
The plant vacuole is responsible for water (and other nutrients). Through osmosis water is attracted into the vacuole. This gives the plant a healthy look and provides every part of it with its necessities.
The cell wall surrounds cells and is one of the major difference between plants and eukaryotic cells. It allows for cell communication, because signals are allowed to pass the wall, while it also gives the plant its structure.
There are different types of reproductive systems in a plant. Pollination/ Fertilization is made able through self-fertilization and asexual reproduction with a seed as the product. Some plants are made perfectly to be able to self fertilize, because the anther with the pollen lies above the stigma. The root is another organ. It anchores the plant and absorbs minerals and water. It also stores organic nutrients. The stem is a system of nodes and it prevents water loss, while the leaves assist in photosynthesis because they contain chloroplast. The vascular system carries out long distance transport with the xylem and phloem in order to give the plant the nutrition it needs and to regulate transpiration etc.
One type of symbiotic relationships is the symbiotic nitrogen fixation. An example of a plant is the bean. This relationship is between roots and bacteria, while the roots obtain sugar


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