In oogamy, fertilization involves

(A)a small non-motile female gamete and a large motile male gamete
(B)a large non-motile female gamete and a small motile male gamete
(C)a large non-motile female gamete and a small non-motile male gamete
(D)large motile female gamete and a small nonmotile male gamete

The NCERT line that answers it

Verbatim line

Fusion between one large, non-motile (static) female gamete and a smaller, motile male gamete is termed **oogamous**, e.g., *Volvox*, *Fucus*.

Chapter: Plant Kingdom
Section: 3.1 ALGAE

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How this line gives the answer

8, emb=0.9921, combined=0.9153). Verified: high — The span explicitly states 'Fusion between one large, non-motile (static) female gamete and a smaller, motile male gamete is termed oogamous', which directly matches option B and distinguishes it from all other options.

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