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  2. What makes peach seeds and nutshells hard? Why?
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What makes peach seeds and nutshells hard? Why?

Answers (1)
R Ritika Jonwal

Peach seeds and nutshells are hard because of its outer - covering known as exine. The  exine is made up of sporopollenin which is resistant to any chemical degradation  due to which the outer - part became hard. 

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