Concept: This question tests your understanding of seed germination and the development of the primary plant organs.

Why (B) is correct: During seed germination, the radicle is the embryonic root that emerges first from the seed. It elongates directly to form the primary root, which anchors the seedling and absorbs water and nutrients.

Why other options are wrong:

(A) Pedicel: A pedicel is the stalk of a single flower, not an embryonic part.

(C) Plumule: The plumule is the embryonic shoot that develops into the stem and leaves.

(D) Stamen: The stamen is the male reproductive organ of a flower, producing pollen.

NEET Tip: Remember that 'radicle' sounds like 'root' and 'plumule' sounds like 'plume' (like a feather, which grows upwards).

Correct Answer: (B)