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Control and Coordination-Important Questions & Preparation Tips

Jun 27, 2013 17:44 IST

    In this article you will get the clue that from where and how the questions are being framed from the chapter Control and coordination
    The experts of jagranjosh.com have full confidence that you will not miss any of the questions in the board exam as well as in competitive exams from this chapter if you will keep the following terms / question in your mind while studying

    • How do living organisms show response to stimuli?
    • Reaction of stimuli is a characteristic property of living organisms. Explain
    • It usually takes lot of time to observe the effect of a stimulus on plants. Explain
    • Difference between dormancy and breaking of dormancy
    • Four major types of plant hormones and their functions
    • How does tropism helps in movement?
    • Why does the stem of a plant bend to one direction?
    • Explain the bending of plant root away from light by the action of auxin hormones
    • Give an example of chemotropism? With the help of diagram
    • Roots can grow against the law of gravity. When does this happen?
    • Definition and Function of thigmotropism
    • Why do followers open their petals in morning and close them in evening
    • Scientific terms for

                                Bending of shoot towards sunlight
                                Growing of root towards the earth
                                Growth of a pollen tube towards ovule
                                Bending of root towards water
                                Winding of tendril around a support

    • Receptor and its role
    • Function of Human nervous system
    • Explain the function of electrical impulses
    • Draw the diagram of neuron and explain its function
    • How are messages transferred from one neuron to another?
    • Gap between two neurons
    • Explain the types of peripheral nervous systemIn a reflex action, we are unaware that anything is going to happen to us. Explain
    • Diagram of reflex arc with its details
    • How effectors cause action
    • Self governing nervous system and its function
    • Function of central nervous system and its way of functioning
    • Brain is the highest coordinating centre in the body. Explain

    Cerebrum: Processes & Coordinatessensory messages

    Midbrain: Regulates vital functions such asheartbeat andbreathing  

    Pons: Relays messages from the cerebrum to thecerebellum & spinalcord

    Medulla Oblongata: Allow brain to communicate with the rest of the nervoussystem

    Spinal Cord: Controls voluntary movement, speech, intelligence, memory,& sensory processing

    Cerebellum: Helps, coordinates & fine tune movementand balance

    Pituitary Gland: Produces hormones involved inregulating growth,puberty, metabolism,water&mineral balance,the body’s responseto the stress & more

    Hypothalamus: Regulates functions like thirst, appetite& sleep patterns

    • Function of different part of brain
    • How is all the voluntary action of body coordinated by cerebrum?
    • Animal hormones and its functions
    • Hormones are kind of chemical messengers. Explain
    • Name all glands in our body having both exocrine and endocrine functions?
    • What is hormonal system? Position of endocrine glands in human body.
    • Functions of all glands in our body
    • What are the two main centers for the coordination of two systems?
    • What all can happens if the pituitary glands do not function properly
    • How hormones help in coordinated growth?
    • Sense organs of our body
    • Is walking different from reflex action

     Q. Match the following

                      Hormones      function
                     Thyroxin          caused breasts to develop in females
                     Adrenaline        causes the male to start producing sperms
                     Insulin             prepares the body for emergency
                     Estrogen         controls the metabolic rate
                     Testosterone    regulates the amount of sugar in blood

    • In what ways are puberty and adolescence result of the activity of some glands in human body
    • What do you understand by CNS? Explain
    • Flow chart to show the classification of nervous system into various parts
    • What is synapse? What happens at the synapse between two neurons? How are the messages carried?


    Q. Electrical impulse travels in neuron from:
           a. Dendrite→axon→axon end→cell body
           b. Cell body→Dendrite→axon→axon end
           c. Dendrite→cell body→axon→axon end
           d. Axon end→axon→cell body→Dendrite

    • Who detects smell and taste in our body?
    • Why does the food taste different when you nose is blocked?
    • Insulin and diabetes
    • Location of all glands in the human body
    • Function of thyroxin hormone
    • Name one hormone found in male
    • Function of hypothalamus, pituitary gland and cerebrum
    • Main thinking part of brain
    • Parts covered under hind brain
    • Name the part which control blood pressure, salivation and vomiting control
    • What do you understand by the term reflex arc
    • Function of gustatory receptor
    • Write an assay on reflex action

    Some example questions are here

    Q. Drastic changes of body features associated with puberty are mainly because of secretion of
         a. Estrogen from testes and testosterone from ovary
         b. Estrogen from adrenal gland and testosterone from pituitary gland
         c. Testosterone from testes and estrogen from ovary
         d. Testosterone from thyroid gland and estrogen from pituitary gland

    Q. Learning is related to
         a. Hypothalamus
         b. Thalamus
         c. Cerebrum
         d. Cerebellum

    Q. Which of the following statements about transmission of nerve impulse is incorrect?
         a. Nerve impulse travels from dendritic end towards axonal end
         b. At the dendritic end electrical impulses bring about the release of some chemicals which generate an electrical impulse at the axonal end of another neuron
         c. The chemicals released from the axonal end of one neuron cross the synapse and generate a similar electrical impulse in a dendrite of another neuron
         d. A neuron transmits electrical impulses not only to another neuron but also to muscle and gland cells

    Q. Which of the following organs is not controlled by autonomous nervous system ?
         a. Heart
         b. Uterus
         c. Glands
         d. Eyes

    Q. The substance that triggers the fall of mature leaves and fruits from plants is due to
         a. Auxin
         b. Gibberellins
         c. Abscissic acid
         d. Cytokinin

    Q.The typical neuronal resting membrane potential measures between
         a. 40 mv to – 80 mv
         b. 30 mv to – 80 mv
         c. 40 mv to – 90 mv
         d. 40 mv to – 70 mv

    Q.The  growth of tendril in pea plants is due to
         a. Effect of light
         b. Effect of gravity
         c. Rapid cell divisions in tendiillar cells that are away from the support
         d. Rapid cell divisions in tendrillar cells in contact with the support

    Q.In reflex action, the reflex arc is formed by
         a. Muscles - receptor – brain
         b. Muscles - effector – brain
         c. Receptor - spinal cord – muscles
         d. Spinal cord - receptor – muscles

    Q.Which of the following statements are true about brain?
            i. The main thinking part of brain is hind brain
            ii. Centers of hearing, smell, memory, sight etc. are located in fore brain
            iii. Involuntary actions like salivation, vomiting, blood pressure are controlled by the medulla in the hind brain
            iv. Cerebellum does not control posture and balance of the body

          a. (i) and (ii)
          b. (i), (ii) and (iii)
          c. (ii) and (iii)
          d. (iii) and (iv)

    Q.Which of the following statements is correct about receptors?
          a. Gustatory receptors detect taste while olfactory receptors detect smell
          b. Both gustatory and olfactory receptors detect smell
          c. Auditory receptors detect smell and olfactory receptors detect taste
          d. Olfactory receptors detect taste and gustatory receptors smell

    Q.Which two organs are connected by pons with the help of transverse band of nerves?
         a. Nerves of brain and spinal cord
         b. Both the cerebral hemispheres
         c. Cerebellum and central nervous system
         d. Sympathetic and parasympathetic

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