1) What is the signal or change in the environment that an animal detects? a) Stimulus b) Homeostasis  c) Receptor d) Reflex 2) Which body part detects stimuli, like eyes, ears, nose, or skin? a) Neuron  b) Sensory receptors c) Sensory organs d) Brain 3) What system carries signals from sensory organs to the brain and back to the body? a) Sensory system b) Nervous system c) Reflex pathway d) Circulatory system 4) Which organ processes information from sensory organs and decides how to respond? a) Brain b) Spinal cord c) Nerves d) Neurons 5) What is a fast, automatic response to a stimulus that doesn’t require thinking? a) Learned behavior b) Reflex c) Instinct d) Adaptation 6) What type of behavior is learned from experience rather than inherited? a) Reflex  b) Instinct c) Learned behavior d) Conditioning 7) What is the name of the specialized cell that detects specific stimuli (like light, sound, or chemicals)? a) Sensory organs b) Motor neurons c) Brain d) Sensory receptors 8) What do we call traits or features that help animals survive in their environment? a) Reflex b) Instinct c) Adaptations d) Stimulus 9) What ability do bats and dolphins use to locate objects in the dark using sound? a) Echolocation b) Sonar c) Chemoreceptors d) Photoreceptors 10) Which receptor detects light and is found in the eyes? a) Chemoreceptors b) Light sensors c) Photoreceptors d) Optic nerves

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