Nervous System Organization in Frogs — NEET Biology
📚 Practice ConceptThe system for control and coordination is highly evolved in the frog. It includes both neural system and endocrine glands. The chemical coordination of various organs of the body is achieved by hormones which are secreted by the endocrine glands. The prominent endocrine glands found in frog are pituitary, thyroid, parathyroid, thymus, pineal body, pancreatic islets, adrenals and gonads. The nervous system is organised into a central nervous system (brain and spinal cord), a peripheral nervous system (cranial and spinal nerves) and an autonomic nervous system (sympathetic and parasympathetic). There are ten pairs of cranial nerves arising from the brain. Brain is enclosed in a bony structure called brain box (cranium). The brain is divided into fore-brain, mid-brain and hind-brain. Forebrain includes olfactory lobes, paired cerebral hemispheres and unpaired diencephalon. The midbrain is characterised by a pair of optic lobes. Hind-brain consists of cerebellum and medulla oblongata. The medulla oblongata passes out through the foramen magnum and continues into spinal cord, which is enclosed in the vertebral column.
Match the following components of the nervous system in frogs with their respective divisions and structural examples: Column I (Nervous System Division) Central Nervous System Peripheral Nervous System Autonomic Nervous System Column II (Primary Components) A. Cranial and spinal nerves B. Brain and spinal cord C. Sympathetic and parasympathetic nerves Column III (Structural Examples) i. Sympathetic and parasympathetic systems ii. Olfactory lobes, optic lobes, cerebellum iii. Nerves extending to limbs and organs
View solution & NCERT explanation
Correct answer: A — Central Nervous System-B-ii, Peripheral Nervous System-A-iii, Autonomic Nervous System-C-i
This question tests the understanding of the organization of the nervous system in frogs, including its divisions and representative structures. - **Central Nervous System (CNS)**: Organized into the brain and spinal cord. Examples of brain parts include olfactory lobes, optic lobes, and cerebellum. So, Central Nervous System-B-ii. - **Peripheral Nervous System (PNS)**: Consists of cranial and spinal nerves. These nerves extend to various parts of the body, including limbs and organs. So, Peripheral Nervous System-A-iii. - **Autonomic Nervous System (ANS)**: Consists of sympathetic and parasympathetic components, which are specialized sets of nerves and ganglia that regulate involuntary body functions. So, Autonomic Nervous System-C-i. Let's evaluate the options: A. Central Nervous System-B-ii (Correct), Peripheral Nervous System-A-iii (Correct), Autonomic Nervous System-C-i (Correct). This option correctly matches all three columns. B. Central Nervous System-A-ii (Incorrect: Cranial and spinal nerves are PNS, not CNS components). Other parts might be correct but the first part is wrong. C. Central Nervous System-B-iii (Incorrect: Brain and spinal cord are CNS, but 'nerves extending to limbs and organs' are examples of PNS), Peripheral Nervous System-A-i (Incorrect: Sympathetic and parasympathetic systems are ANS, not PNS primary components). D. Central Nervous System-C-i (Incorrect: Sympathetic and parasympathetic systems are ANS, not CNS), Peripheral Nervous System-A-ii (Incorrect: Cranial and spinal nerves are PNS, but olfactory/optic lobes/cerebellum are brain parts within CNS). Therefore, option A is the correct answer.
What does NCERT say about system for control and?
Has this concept appeared in NEET?
Which chapter is this from?
Through deep analysis of NEET and NTA, 88 of 90 questions from the NEET 2026 paper were matched straight from the MedicNEET Biology question bank.
88/90MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.