Some grubs have __________, while others are legless.

Grubs, which are the larval stage of various beetles, can exhibit a range of physical characteristics based on their species. The correct choice highlights that some grubs possess legs, which are essential for movement and feeding during their larval development.

In the context of insect anatomy, many larvae, including those of beetles, can have legs that enable them to navigate their environment more efficiently. This characteristic can vary significantly among different species of grubs; some may be more developed, presenting legs that assist with mobility, while others may be in a stage where they are less developed or may lose their legs entirely as they mature.

Understanding the anatomy and developmental stages of grubs is critical for effective pest management and controlling beetle populations, as it informs strategies for treatment based on the life cycle of the pest.