Coordination and Control in Biology topic based MCQs preparation test for all competitive exam. Coordination and Control in Biology Chapter# 13, topic based MCQs that are mostly asked in competitive exam related to Biology. Examtry team design a series of MCQs based tests that effectively and efficiently help a student or job seeker to prepare their exam effectively and efficiently.
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MCQs under the topic of Coordination and Control in Biology covers all tests conducted by FPSC, NTS, KPSC, PPSC, SPSC, BPSC, OTS, UTS, UPS, PTS, CTS, ATS, ETEA or any other institution.
1 - Chlorosis, i.e., yellowish hue on the leaves results from
All of these
2 - Chemically auxins are
Indole acetic acid.
3 - Gibberellins may be substituted for _____ light, therefore promote flowering in long day plants.
Red
4 - Which of the following is antagonist to Auxin in terms of promotion of stem growth?
Abscisic Acid
5 - 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:
Gibberellins
6 - The only promoter of leaf senescence in the following plant hormones is:
Abscisic Acid
7 - Which of the following is used in brewing industry to promote malting:
Gibberellins
8 - Which type of the receptors are present in the ear?
Mechanoreceptors
9 - Type of sensations carried by nociceptors are:
Pain
10 - Which type of sensory structures carrying the touch sensations are present in papillae extending into ridges of the fingertips?
Meissner's Corpuscles.
11 - Which type of sensory structures carry deep pressure and vibration sensations?
Pacinian corpuscles.
12 - Nissl's granules are present in which part of the neuron?
Soma.
13 - Which of the following statement about neuron is incorrect?
Like all the living cell, when they mature and divide to form similar cells.
14 - Type of neurons found exclusively in CNS are:
Associative neurons
15 - Maintenance of normal resting potential via movement of K+ inside the cell and na+ out is a/an _______ process.
Active
16 - Cell membrane under resting conditions is impermeable to all the ions except
K+
17 - At the induction of action potential opening of Na+ gate with influx of Na+ is a _________ processes:
Passive transport.
18 - Normal action potential of a neuronal cell is :
plus 50 mv
19 - Na+ -K+ ATPase pump is important for:
Recovery of resting potential.
20 - Maximum speed of nerve impulse transmission is
120m/sec
21 - Which of the following has no central nervous system?
Hydra
22 - Co-ordination results in
All of these
23 - Which of the following are responsible for the detection of changes in environment?
Receptors
24 - Which of the followings are effectors?
Both 'a' & 'b'
25 - Any change in the environment of an organism is called
Stimulus
26 - Hydra has
Neuron-cells
27 - Which of the followings is missing from the nervous system of planaria?
none of these.
28 - Co-ordination in man is brought about by
Both of these
29 - Which of the following transmits nerve impulse from receptors to central nervous system?
Sensory neuron
30 - In which of the following neurons length of dendrite is greater than axon?
Sensory neuron
31 - Which of the following neuron has a single long dendron?
Sensory neuron
32 - Which of the following cytoplasmic extensions carry the message toward the cell body?
Dendrites
33 - Microscopic gaps between the neuron endings are called
Synapses
34 - What is the function of synapse?
To decrease the speed of nerve impulse
35 - Under resting membrane potentials
Outer surface of neuron is more positive
36 - Which of the following ions are involved in the initiation of nerve impulse
Na+
37 - Reflex actions below the neck are under control of
Spinal cord
38 - Central nervous system of man consists of
Both of these
39 - Which of the following is largest part of brain
Cerebrum
40 - Which of the following is present inside the vertebral column
Spinal cord
41 - Intelligence is under the control of
Cerebrum
42 - Which of the following is second largest part of the brain?
Cerebellum
43 - Which of the following acts as thermoregulator?
Hypothalamus
44 - Which of the following allows precise muscular movements?
Cerebellum
45 - Receptors for hearing come under heading of
Mechanical
46 - It is one of the convulsive disorders of nerves which are characterized by abrupt transient symptoms of motor, sensory, psychic or autonomic nature.
Epilepsy
47 - Which of the following feature is not related to neuron
Regeneration
48 - Value of resting membrane potential is
0.07 V
49 - Number of pairs of cranial nerves is
12
50 - Insufficient secretion of iodothyroxine in adults causes
Myxedema
51 - Insulin and glucagons are ________ in nature.
Protein
52 - Acromegaly is caused due to oversecretion of
Thyroxin
53 - MSH is produced from
Median pituitary
54 - Grave's disease is produced due to
Overproduction of thyroxin
55 - Secretin is a hormone produced by
Duodenum
56 - All of the following are similarities between nervous and endocrine system except
Having slow but prolonged effects
57 - Types of behaviour enabling pillbugs to reach moist area is
Kinesis
58 - _________ was first to propose an objective definition of instinct.
Darwin
59 - _______ is simplest form of learning.
Habituation
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