Plants are multicellular, eukaryotes organisms. They have membrane-bound organelles. A plant cell has a rigid cell wall, a central vacuole, plasmodesmata and plastids, which make it unique among all other type of eukaryotes cells.Plant cells sustain the photosynthesis process, during which oxygen is produced.lants are multicellular, eukaryotes organisms. They have membrane-bound organelles. A plant cell has a rigid cell wall, a central vacuole, plasmodesmata and plastids, which make it unique among all other type of eukaryotes cells.
During the Qin Dynasty, some of these early fortifications along the northern frontier would become part of the âfirstâ Great Wall. In 215 BC, the First Emperor Qin Shi Huang ordered his general Meng Tian to start constructing the Great Wall to protect against the northern nomads.
The Great Wall of China is one of the biggest structures ever made by humans. The ancient Chinese built the wall to protect against invading armies. Today it is a tourist attraction and a symbol of China. One of the largest engineering and building projects ever carried out is the Great Wall of China. Great Wall of China, Chinese (Pinyin) Wanli Changcheng or (Wade-Giles romanization) Wan-li Châang-châeng (â10,000-Li Long Wallâ), extensive bulwark erected in ancient China, one of the largest building-construction projects ever undertaken.