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Coordination and Control—Class 10 Biology MCQs The brain and spinal cord together form the: a) Central nervous system b) Peripheral nervous system c) Autonomic nervous system d) Endocrine system Answer: a Which part of the brain controls voluntary actions? a) Medulla oblongata b) Cerebellum c) Cerebrum d) Hypothalamus Answer: c The junction between two neurons is called: a) Axon b) Dendrite c) Synapse d) Node Answer: c Reflex actions are controlled by the a) Cerebrum b) Spinal cord c) Medulla d) Thalamus Answer: b Which of the following is a part of the peripheral nervous system? a) Brain b) Spinal cord c) Cranial nerves d) Medulla Answer: c Which gland is known as the “master gland”? a) Adrenal b) Pituitary c) Thyroid d) Pancreas Answer: b Hormones are secreted by: a) Exocrine glands b) Sensory neurons c) Endocrine glands d) Motor neurons Answer: c Which hormone regulates blood sugar levels? a) Adrenaline b) Insulin c) Thy...