SMK Aman Jaya Blogger

The apical meristem is a completely undifferentiated meristematic tissue found in the buds of plants. Its main function is to begin growth in young seedlings at the tips of roots and shoots (forming buds, among other things). Specifically, an active apical meristem lays down a growing root or shoot behind itself, pushing itself forward. Apical meristems are very small, compared to the cylinder-shaped lateral meristems. Apical meristems are composed of several layers. The number of layers varies from plant to plant type. In general the outermost layer is called the tunica while the innermost layers are the corpus. In monocots, the tunica determine the physical characteristics of the leaf edge and margin. In dicots, layer two of the corpus determine the characteristics of the edge of the leaf. The corpus and tunica plays a critical part of the plant physical appearance as all plant cells are formed from the meristems.

Examples: A descriptive essay could describe . . .
* a tree in my backyard;
* a visit to the children's ward of a hospital;
* a hot fudge sundae;
* what an athlete did in order to make it to the Olympics.

The descriptive essay provides details about how something looks, feels, tastes, smells, makes one feel, or sounds. It can also describe what something is, or how something happened. These essays generally use a lot of sensory details. The essay could be a list-like description that provides point by point details. Or, it could function as a story, keeping the reader interested in the plot and theme of the event described.
Because description is a mode of expository writing which is relied upon in other expository modes, we sometimes find difficulty in imagining a purely descriptive essay. In a narrative, for example, description can make the setting of characters more vivid; in a process paper it can insure that the audience understands the finished product. Regardless of how we use description, it is easy to see that it strengthens an essay considerably.

Principles

Students often ask, "But how do I write a purely descriptive essay? What's the point of description? What's so different about it?" There are three characteristics of a purely descriptive essay which are worthy of remembering.
· a descriptive essay has one, clear dominant impression. If, for example you are describing a snowfall, it is important for you to decide and to let your reader know if it is threatening or lovely; in order to have one dominant impression it cannot be both. The dominant impression guides the author's selection of detail and is thereby made clear to the reader in the thesis sentence.
· a descriptive essay can be objective or subjective, giving the author a wide choice of tone, diction and attitude. For instance, an objective description of one's dog would mention such facts as height, weight, coloring and so forth. A subjective description would include the above details, but would also stress the author's feeling toward the dog, as well as its personality and habits.
· the purpose of a purely descriptive essay is to involve the reader enough so he or she can actually visualize the things being described. Therefore, it is important to use specific and concrete details.
Conventions
· The descriptive essay relies on concrete, sensory detail to communicate its point. Remember, we have five senses, not one or two.
· The author of a descriptive essay must carefully select details to support the dominant impression. In other words, the author has the license to omit details which are incongruent with the dominant impression unless the dominant impression is one which points out the discrepancies.
· Description very often relies on emotion to convey its point. Because of this, verbs, adverbs, and adjectives convey more to the reader than do nouns.
· Unless the description is objective, you must be sure that the dominant impression conveys an attitude.
Strategies
· Try giving all the details first; the dominant impression then is built from these details.
· Check your details to be sure that they are consistent with the dominant impression. You might even want to write down the five senses on a scratch piece of paper and check to see that you have covered them all.
· Try moving your reader through space and time chronologically. For instance, you might want to describe a train ride from start to destination, or a stream from its source to the point at which it joins the river.
· Use a then-and-now approach to show decay, change, or improvement. The house where you grew up might now be a rambling shack. The variations on this strategy are endless.
· Select an emotion and try to describe it. It might be more difficult to get started, but it can be worthwhile.