植物世界之植物的花和果实（英文）

• 作 者: 周越
• 出 处: 数理天地(初中版)
• 发表日期: 2004年期
• 关键词: 植物世界 flower carefully attached colors older enlarged bright protect morning

As you study this diagram of a flower carefully,you will see that it is attached to a stem.It is attached to the stem by the enlarged part of the stem called the receptacle.The sepals protect the delicate inner parts of the flower bud,the sepals are usually green,and when the bud gets older they may drop off.The petals usually show bright colors.These