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can you explain angiosperm |
Angiosperms are the flowering plants (today the most abundant and diverse plants on earth). Most are terrestrial and all lack locomotion. In most angiosperms, the flowers are perfect: each has both microsporangia and megasporangia. Some angiosperms are imperfect, having either microsporangia or megasporangia but not both. Monoecious plants have both types of imperfect flower on the same plant. Dioecious plants have imperfect flowers on separate plants; that is, some plants are male, some female. Examples include willows, poplars, and the date palm. Flowers develop from flower buds. Each bud contains 4 concentric whorls of tissue. From the outer to the inner, these develop into a whorl of sepals (collectively called the calyx) a whorl of petals (collectively called the corolla) stamens in which the microsporangia form carpels in which the megasporangia form. |