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Which treatment softens a thick seed coat to allow germination?
AVernalisation
BScarification
CStratification
DMicropropagation
Answer & Solution
Correct answer: B. Scarification
1. In many seeds a thick seed coat retards the ability to germinate.
2. Scarification uses mechanical or chemical processes to soften that coat and is often applied before germination.
3. Presoaking in hot water, or passing through an acid environment such as the digestive tract of an animal, has the same effect.
4. Vernalisation is a cold treatment that some seeds need before they can germinate, so it acts on dormancy rather than on the coat.
5. Micropropagation is a laboratory method of asexual propagation and has nothing to do with seed coats.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 32 "Plant Reproduction", section 32.2 Pollination and Fertilization_
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