SSC
BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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cotyledon
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Hilum
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Aleurone layer
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Testa
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Detailed explanation-1: -Seed coat-imposed dormancy in particular is part of the seed survival strategy of many species (Werker, 1981; Kelly et al., 1992). The seed coat exerts its germination-restrictive action most of the time by being impermeable to water and/or oxygen or by its mechanical resistance to radicle protrusion.
Detailed explanation-2: -The radicle is the first part of a seedling (a growing plant embryo) to emerge from the seed during the process of germination.
Detailed explanation-3: -A seed is formed when the ovule develops a touch coat after fertilization. A seed contains the embryo and the food materials to nourish it. The tough seed coat comprises two layers, testa and tegmen. Testa is the outer hard protecting cover of the seed.