Biology Ch 3 Class 12 Coordination and Control





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Which one of the following is common to all neurons?

PMC 2020
Biology
Coordination and Control
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Maintenance of normal resting potential via movement of K+ inside the cell and na+ out is a/an _______ process.

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_________ is sometimes given by injection as an emergency treatment in cardiac arrest:

NUMS 2020
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Abscisic acid promotes flowering in short day plants and inhibits in long day plants, which of the following is antagonistic to abscisic acid in terms of flowering:

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Hepatic and Pancreatic secretions are also stimulated by a hormone called:

NUMS 2016
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The _____ is the main nutritional part and it’s concerned with the biosynthesis of materials necessary for neurons.

NUMS 2019 Reconduct
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Which of the following neurotransmitters function, both as neurotransmitter and hormones, decreasing our perception of pain?

PMC 2020
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The only promoter of leaf senescence in the following plant hormones is:

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Deficient production of hormones by adrenal glands results in: .

NTS 2011
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The estrogen hormone secretion during the oogenesis is stimulated by:

NUMS 2020
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Which body function is controlled through a positive feedback mechanism?

PMC 2020
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How many meninges cover the human brain?

NTS 2014
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The phytohormones controlling the plant movements are?

NTS 2015 SMBBMC
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At the induction of action potential opening of Na+ gate with influx of Na+ is a _________ processes:

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Which brain portion is responsible for controlling body coordination?

NUMS 2020
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Abscisic acid promotes flowering in short day plants and inhibits in long day plants, which of the following is antagonistic to abscisic acid in terms of flowering:

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Which of the following statement about neuron is incorrect?

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Cell membrane under resting conditions is impermeable to all the ions except

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Resting membrane potential of neurons is _______, while during active membrane potential the inner membrane surface becomes more _____ than the outside.

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Nissl’s granules are present in which part of the neuron?

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In an experiment, the production of hormone secretin was blocked. As a result, levels of all of the following enzymes were affected EXCEPT:

NTS 2014
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The spinal nerves are functionally:

NUMS 2016
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Type of sensations carried by nociceptors are:

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The _____ may be a cell, neuron ending or an organ that receives the stimulus.

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Which of the following is the function of adrenaline?

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Four events in the transmission of nerve impulses across synapses are:

I. depolarisation of the presynaptic membrane

II. propagation of postsynaptic action potential

III. reabsorption of the transmitter substance

IV. release of transmitter substance into the synaptic cleft

In which sequence do these events occur?

FIRST -> LAST

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Which of the following is not the function of the cerebrum?

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Normal resting membrane potential of a neuron is

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The correct option about spinal nerves is:

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The directional movement toward or away from the stimulus is called:

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Chemically auxins are

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Which of the following is antagonist to Auxin in terms of promotion of stem growth?

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The 1st human hormone produced by recombinant DNA technology was:

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The gland known as the “gland of emergency” is the:

NTS 2014
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All of the following hormones are secreted from anterior lobe of pituitary gland BUT:

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Gibberellins may be substituted for _____ light, therefore promote flowering in long day plants.

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Which hormone is chemically a steroid?

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Neurons are cells adapted for the rapid transmission of electrical impulses. To do this, they have long thin processes called:

PMC 2020
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The region where the impulse moves from one neuron to another is called ______.

NTS 2012
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The autonomic nervous system controls all of the following activities except:

NTS 2014
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Which of the following is not secreted by thyroid gland?

NTS 2015 SMBBMC
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Na+ -K+ ATPase pump is important for:

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On land, frogs are:

NUMS 2014
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Neurotransmitters trigger action potential in the postsynaptic neuron by changing the permeability of certain _________.

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Which type of sensory structures carrying the touch sensations are present in papillae extending into ridges of the fingertips?

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Thyroid gland requires high amount of:

NUMS 2016
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Which type of the receptors are present in the ear?

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Which one of the following is a neurotransmitter?

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Lymph nodes are not present:

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Chlorosis, i.e., yellowish hue on the leaves results from

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Normal action potential of a neuronal cell is :

 

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The sense organs of taste in tongue are known as:

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A _____ is a junction between two neurons or between a motor neuron and a muscle cell:

PMC 2020
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Type of neurons found exclusively in CNS are:

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In plants, ______ hormone promotes closing of stomata in drought conditions.

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Which type of sensory structures carry deep pressure and vibration sensations?

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Direction of reflex action is from:

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Diameter of an artery can be changed by:

NUMS 2015
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The nerve center for sight is located in the

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Which of the following is used in brewing industry to promote malting:

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Type of neurons found exclusively in CNS are:

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The prolactin hormone, responsible for the activation of mammary glands to start producing milk, is a hormone of the:

NTS 2010
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