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.
There are two main Types of Trees based on their leaves, deciduous and evergreen; 1  Deciduous trees are trees whose leaves loose their green coloring and turn orange, red or brown before they are shed at the end of the growing season, generally in autumn.2  Evergreen trees carry their leaves throughout the year.n fact the term type of tree is very vague, as there are many types of trees in many different contexts. Regarding Botanical Classification, each Genus has a type species that is identified as a typical species for that genus.