Scelta multipla
Which of the following correctly describes the structure of a seed and the function of its parts?
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36. Plant Reproduction
Seeds
Scelta multipla
What structure emerges first from a germinating seed and pushes into the soil?
A
Cotyledon
B
Radicle
C
Plumule
D
Epicotyl
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Understand the process of seed germination: During germination, the seed absorbs water, activates enzymes, and begins cellular respiration to support growth.
Identify the primary structures of a seed: Seeds contain the radicle (embryonic root), plumule (embryonic shoot), cotyledon (seed leaf), and epicotyl (part of the shoot above the cotyledon).
Recognize the sequence of emergence: The radicle is the first structure to emerge from the seed during germination. It grows downward into the soil to anchor the plant and absorb water and nutrients.
Differentiate the roles of other structures: The plumule develops into the shoot system, the cotyledon provides nutrients to the growing seedling, and the epicotyl contributes to the shoot above the cotyledon.
Conclude that the radicle is the correct answer: It is the first structure to emerge and push into the soil during seed germination.
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