Their seeds are not enclosed in a fruit C. They produce flowers and their seeds are enclosed in a fruit D. Their seeds are E. xposed 相关知识点: 试题来源: 解析 C。解析:被子植物(angiosperms)的主要特征是能够开花,并且种子被包裹在果实里面。A选项说被子植物不开花是错误的。B选项种子不被包裹...
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Which of the following is a characteristic of most amphibians? a. They breathe with gills throughout life. b. They have poisonous glands. c. They have dry, scaly skin. d. They begin life as aquatic organisms. Which are more closely related to crocodiles: birds or...
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2. Formation Process: During the development of an aggregate fruit, the multiple ovaries come together or "aggregate" to form a single fruit structure. This aggregation is the key characteristic that distinguishes aggregate fruits from other types of fruits. 3. Comparison with Simple Fruits: In co...