The marine biologist job outlook includes some growth, but with strong competition for jobs. If you are passionate and dedicated, you can make this a lifelong career. Marine biologists study ocean life, conducting research on aquatic plants and animals.
3. Leaf Arrangement (Phyllotaxy) Three different leaf arrangements: Alternate (one leaf per node), opposite (two leaves per node) and whorled (three or more leaves per node). A node is the place where one or more leaves are attached along the stem. The area between the nodes is called the internode.
Leaf Type. LEAF TYPES. When discussing the structure of leaves, it is best to start in the most basic concept: Leaf Type. A leaf can be either simple or compound. This concept is determined by determining the position of the bud. SIMPLE - If the bud is located in the axil (where the petiole attaches to the stem) of a single leaf. COMPOUND - The leaf is divided into multiple leaflets. Simple (left) and Compound (right) leaf types . Simple Leaf. A simple leaf is a single leaf that attaches to the stem. Palmate Leaf. A palmate leaf is a compound leaf that has smaller leaflets attaching to a common point. The whole structure is palm-like and shaped like the palm of your hand. Pinnate Leaf