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.
Pinnate Leaf. A pinnate leaf is a compound leaf that attaches to the stem and is divided into smaller leaflets. A pinnate leaf can either be even or odd, which is the amount of leaflets contained on the leaf. As you can see, both the drawing and picture are odd pinnate leaves because they have an odd amount of leaflets.