An abstract is a brief summarizing statement, usually between 75 and 150 words long. It gives thereader a synopsis of the problem, method, results, and conclusions of yourdocument. The abstract takes the form of a paragraph, usually with 5-10 sentences. It appears atthe top of a journal article, just under the title, or on the page following the title page of a report. In the latter instance, the abstract appears on a page by itself.
Quick Answer. A vacuole is a fluid-filled sac that stores food and water in cells. Vacuoles are most commonly found in plant cells, but they also exist in some bacteria and animal cells. Continue Reading.
Storage parenchyma is specialized as large water storage tissue in many succulent and xerophytic plants with greatly expanded vacuole. The cells are chlorophyll-free and thin-walled. In potatoes tuber and grain for example, the parenchyma acts as a special storage tissue to store food material.