What part of the corn does the larval corn rootworm damage by feeding?

The larval corn rootworm primarily damages the corn plants by feeding on the root hairs and root tips. This feeding habit is particularly detrimental because it affects the plant's ability to take up water and nutrients from the soil, leading to reduced plant health and yield. Healthy root systems are crucial for the overall vigor of the corn plant; when the roots are compromised, the plant may suffer from stunted growth, increased susceptibility to drought, and vulnerability to other secondary pathogens or pest infestations.

The other options, such as leaves, stem, and grains, while important parts of the corn plant, are not the main targets of the larval corn rootworm's feeding habits. The larvae specifically target the underground root system, where they can cause significant damage that can ultimately lead to larger issues for the corn crop. Therefore, understanding the feeding behavior of the corn rootworm is essential for implementing effective pest management strategies to protect the corn crops.