Objective Biology for NEET-Volume I
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Questions and Answers

What is the primary focus of the book 'Objective Biology for NEET-Volume I'?

  • Philosophy
  • Physics
  • Mathematics
  • Biology for medical aspirants (correct)
  • What types of questions are included in the book for AIIMS and similar examinations?

    Assertion and reason type questions

    The book contains only new questions and does not include previous years' questions.

    False

    The book is constructed as per the latest __________ curriculum.

    <p>NCERT</p> Signup and view all the answers

    What features are included at the end of the book for self-evaluation?

    <p>Sample Papers</p> Signup and view all the answers

    Select the incorrect statement:

    <p>Neural organization is complex in lower invertebrates.</p> Signup and view all the answers

    Somatic neural system transmits impulse to:

    <p>Skeletal muscles</p> Signup and view all the answers

    Identify A, B, C, D, and E:

    <p>A = Central Nervous System (CNS) B = Peripheral Nervous System (PNS) C = Spinal Cord D = Sympathetic Neural System E = Parasympathetic Neural System</p> Signup and view all the answers

    Which of the following lacks a neural system?

    <p>Spongia (Sponges)</p> Signup and view all the answers

    Nervous system of hydra is composed of:

    <p>Vertical ganglion chain interconnected by commissure</p> Signup and view all the answers

    Nissl’s granules are found in all except:

    <p>Axon</p> Signup and view all the answers

    Dendrites transmit impulse ____ cell body and axon transmits impulse ____ cell body.

    <p>towards, away from</p> Signup and view all the answers

    Which of the following systems relays impulse from CNS to skeletal muscles?

    <p>Somatic neural system</p> Signup and view all the answers

    Bipolar axons are found in:

    <p>Retina of eye</p> Signup and view all the answers

    Unipolar axons are found in:

    <p>Embryo</p> Signup and view all the answers

    Neuron can:

    <p>All of these</p> Signup and view all the answers

    Schwann cell is absent in:

    <p>Astrocytes</p> Signup and view all the answers

    Neuron is a _____ structure composed of three major parts cell body _____ and axon.

    <p>microscopic, dendrites</p> Signup and view all the answers

    Which part do not contain Nissl’s granule?

    <p>C</p> Signup and view all the answers

    Which path of transmission is correct?

    <p>A→B→C</p> Signup and view all the answers

    Match the following:

    <p>Unipolar = Cell body with one axon only, found in sensory neurons.</p> Signup and view all the answers

    Study Notes

    Objective Biology for NEET-Volume I

    • A two-volume set designed for medical aspirants
    • Contains practice questions and previous years’ questions
    • Focuses on trends in topical coverage and the latest NEET question paper patterns
    • Must-have resource for NEET and similar medical entrance examinations

    Features

    • Aligned with the latest class XI and XII NCERT curriculum
    • Includes chapter-wise NCERT Exemplar questions
    • Offers a large number of practice questions for understanding

    Additional Features

    • Includes "Assertion and reason" type questions for AIIMS and similar exams
    • Incorporates previous years’ questions into each chapter
    • Contains Mock Tests and Sample Papers for self-evaluation

    Human Neural System:

    • Neural system is a network responsible for quick coordination between organs
    • Neural system is complex in vertebrates, but simpler in lower invertebrates
    • Human neural system is divided into:
      • Central Nervous System (CNS)
      • Peripheral Nervous System (PNS)
    • CNS is made up of the brain and spinal cord.
    • PNS is divided into: - Somatic neural system - Autonomic neural system
    • Somatic neural system transmits impulses to skeletal muscles
    • Autonomic neural system controls involuntary actions, and is further divided into:
      • Sympathetic neural system
      • Parasympathetic neural system

    Neuron Structure and Function:

    • Neuron, a basic unit of the nervous system, is a microscopic structure with three parts:
      • Cell body (cyton or soma)
      • Dendrites
      • Axon
    • Dendrites receive impulses and transmit them towards the cell body
    • Axon transmits impulses away from the cell body
    • Nissl's granules are found in the cell body and dendrites, but absent in the axon
    • Neuron types based on axons:
      • Unipolar - One axon only, found in embryonic stages
      • Bipolar - Two axons, found in retina of eye

    Myelin Sheath and Schwann Cells:

    • Cell body contains the nucleus.
    • Myelin sheath is a fatty layer that surrounds the axon.
    • Schwann cells form the myelin sheath in myelinated neurons.
    • Myelin sheath is absent in non-myelinated neurons and astrocytes

    Functions of Neurons:

    • Neurons can:
      • Detect stimuli
      • Receive stimuli
      • Transmit stimuli

    Impulse Transmission:

    • Impulse transmission direction: Cell body → Axon
    • Impulse transmission occurs through:
      • Dendrite
      • Cell body (cyton or soma)
      • Axon

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    Description

    This quiz is designed for medical aspirants preparing for NEET and similar exams. It focuses on the latest trends in question patterns and includes chapter-wise NCERT Exemplar questions, practice questions, and previous years’ questions. It's an essential tool for mastering biology concepts aligned with the NCERT curriculum.

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