In $Ipomoea\, batatas$ (Sweet potato),the food is stored in:

$A$ root grows in length; which region of the root is responsible for this growth?

In $Pandanus$ $(Screw\, pine)$,stilt roots arise from:

If a primary root continues to grow,the type of root system will be known as

The edible part of a sweet potato is:

How many of the following statements are consistent with the functions of the root?
$I$ - Absorption of water and minerals from the soil
$II$ - Providing a proper anchorage to the plant parts
$III$ - Storing reserve food material
$IV$ - Synthesis of plant growth regulators