Underground stems of potato, ginger, turmeric, Zaminkand and Colocasia:
I. Store food in them
II. Act as organs of perennation
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect

The stem thorns seen in the picture can belong to:

1. Opuntia 2. Argemone 3. Agave 4. Lemon