Question

Enlarged roots and stems in plants are adaptations for _________________ and are often found in _______________ plants that must endure winter.

Answer 1

Enlarged roots and stems are found in plants that need to adapt for food storage in winter months. These types of plants lose their leaves during the winter months and cannot participate in photosynthesis, so the extra food storage helps them to survive.
The category of plants that lose their leaves are called deciduous plants. 

Answer 2

food storage; deciduous.