1. Tardigrade
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  4. This is an example of a very old viable seed excavated from ArcticTundra. The seed germinated and flowered after an estimated record of 10,000 years of dormancy. It is

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Q. This is an example of a very old viable seed excavated from ArcticTundra. The seed germinated and flowered after an estimated record of $10,000$ years of dormancy. It is

Sexual Reproduction in Flowering Plants

Solution:

There are several records of very old yet viable seeds. The oldest one is of a lupine (Lupinus arcticus), excavated from Arctic Tundra. Seeds of Lupinus arcticus, atleast $10,000$ years old were found in lemming burrows deeply buried in permanently frozen silt of Pleistocene age in unglaciated central Yuzon. They readily germinated in the laboratory and have since grown into normal healthy plants.