题目

In the past, young people in Japan were expected to take on responsibilities to support their parents and grandparents. Now they expect to be supported well into young adulthood. The new breed, born since the 1960s, have never known anything but richness. Youth are seen as resistant to entering society as mature adults, to becoming social citizens. Once the great objective of reconstruction after the Second World War was accomplished, a new generation lost the motivating power that had united the nation together. Japan's birth rate has been failing rapidly, partly because of economic decline, 10．根据学习过的生物学知识回答以下小题（1）除病毒等生物外，生物是由细胞构成的，细胞是构成生物体结构和功能的基本单位；（2）水绵体内叶绿体的形状是带状螺旋形；（3）水中的动物五彩纷呈，多种多样；常见的珊瑚虫、水母属于腔肠动物；河蚌、螺蛳属于软体动物；青蛙属于两栖动物；虾和蟹属于节肢动物．（4）鲫鱼终生生活在水中，用鳃呼吸；草履虫通过表膜进行呼吸；（5）海带属于藻类植物，其体内含有丰富的碘，可以预防地方甲状腺肿等疾病．