AP BIOLOGY

Detailed explanation-1: -Storing food in the roots help them to use it during scarcity of food and survive. For example, there is a lesser chance of photosynthesis, due to less avalability of sunlight, during winter. In situations like this, plants like carrots and radish live on stored food to survive throught the winter.

Detailed explanation-2: -First, as the days shorten and the cold sets in, many plants become “hardened”. Water is pumped out of plant cells into the roots and any remaining sap, which is a sugary solution, often acts as antifreeze. Broadleaf trees, like maples and oaks, shed their thin, flat leaves each fall to reduce water loss.

Detailed explanation-3: -Plants Store their extra food in fruits, stems, roots, and leaves. Storing the food helps them to use it in winter and survive because there is very little sunlight available and so they photosynthesize less.

Detailed explanation-4: -Plants produce their own food by the process of photosynthesis. By-products produced by this process are glucose and oxygen. Glucose is stored in the form of starch by plants in other parts like leaves, roots and stem.

Detailed explanation-5: -Many plants that survive winter in a dormant state form storage organs below the ground which store nutrients during the winter, the rest of the plant withering away. Storage organs come in a variety of forms, including tap roots, bulbs, corms, rhizomes, root tubers and stem tubers (Figure 13).