What do cacti, roses, and succulents have in common? They're all plants that poke! This book explores these plant species and more, providing an in-depth look at this important plant defense. Readers learn about the function of thorns and burs, and how they're successful in keeping enemies and predators away. Written to support elementary science curriculua, this volume covers concepts that are important for young science students, including survival and adaptation, ecosystems, and life cycles. Age-appropriate text and detailed photographs make it fun and accessible to learn about science!