NEET 2001 · Class 12

Sexual Reproduction in Flowering Plants

Adventive embryony in Citrus is due to

  1. (A)nucellus
  2. (B)integuments
  3. (C)zygotic embryo
  4. (D)fertilized egg

The NCERT line that answers it

Verbatim line

More often, as in many *Citrus* and *Mango* varieties some of the nucellar cells surrounding the embryo sac start dividing, protrude into the embryo sac and develop into the embryos.

Chapter
Sexual Reproduction in Flowering Plants
Section
1.5 APOMIXIS AND POLYEMBRYONY

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

75, emb=1.0, combined=0.9). Verified: high — The span explicitly states that in Citrus varieties, nucellar cells develop into embryos, which directly matches the correct answer about adventive embryony being due to nucellus.

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