Multiple choice

Which one of the following pairs is not correctly matched?

  1. Primary endosperm : Fusion between sperm and nucleus polar nuclei

  2. Helobial endosperm : Successive nuclear division is followed by cell wall formation

  3. Storage proteins in endosperm : Globulins and albumins

  4. Endosperm cell walls : Mannans and xyloglucans

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Storage proteins in endosperm are mainly prolamins and glutelins (in cereals). Globulins and albumins are storage proteins found in the embryo, not the endosperm. The other pairs are correctly matched: primary endosperm forms from double fertilization, helobial type has cell wall formation after nuclear divisions, and endosperm cell walls contain mannans and xyloglucans.