进 屬 Sense organs allow animals to 多口原城 detect stimuli. 中蕾商特 英版 PE 中华商务进口思方】 Arthropods have a tough exoskeleton SURERSIMPLE BIOLOGY 迪 Effector ongans such as muscles allow animals to respond. Jointed limbs allow insects 10m0e KEY STAGES 3-4 咽 THE ULTIMATE BITESIZE STUDY GUIDE