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The cycads, a mostly tropical phylum of gymnosperms, evolved about 300 million years ago and were dominant forms during the age of the dinosaurs. Though their sperm are flagellated, their ovules are pollinated by beetles. These beetles get nutrition from the pollen and shelter from the microsporophylls. Upon visiting megasporophylls, the beetles transfer pollen to the exposed ovules. In cycads, pollen cones and seed cones are borne on different plants. Cycads synthesise neurotoxins, especially in the seeds, that are effective against most animals, including humans.
Which feature of cycads distinguishes them from most other gymnosperms?
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Allocation bases are criteria or standards used to distribute costs among different departments, activities, or products in a company.
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The systematic allocation of the cost of a tangible asset over its useful life, reflecting the loss in value due to wear and tear, deterioration, or obsolescence.
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The cost incurred by a company for using or occupying property, buildings, or equipment, recognized as an expense in the income statement.
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