- A A specialized root tissue that absorbs water and minerals
- B A virus-free shoot tip excised from the apical meristem
- C A mature seed embryo isolated for embryo rescue
- D An undifferentiated mass of cells growing on culture medium
Correct answer: D. An undifferentiated mass of cells growing on culture medium
Explanation: Callus is an undifferentiated, amorphous mass of cells that proliferates on a suitable culture medium from an explant.
Concept context
Learn about animal husbandry, plant breeding, tissue culture, biofortification, and single cell protein.
Read the full Strategies for Enhancement in Food Production notes →