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Question

Rice is an example of a/an

A
Orthodox seed
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B
Recalcitrant seed
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C
Conservative seed
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D
Sensitive seed
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Solution

The correct option is C Orthodox seed
Orthodox seeds are seeds which will survive drying and/or freezing during ex-situ conservation. According to information from the U.S. 'department of agriculture' there is variation in the ability of orthodox seeds to withstand drying and storage with some seeds being more sensitive than others. Thus, some seeds are considered intermediate in their storage capability, while others are fully orthodox.
Orthodox seeds are those which are capable of withstanding reduction in moisture (upto 5%) and prolonged exposure to low temperature(10 degree C to20 degree C) e.g., cereals and legumes. Examples of recalcitrant seeds are rubber tree, cocoa, tea, litchi, jack fruit, coconut and most of timber plants.

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