Biology chapter 17
Chapter 17
1. Which of
the following is present inside the vertebral column?
a. Brain b. Spinal cord
c. Both a &b d. None of these
2. Intelligence
is under the control of
a. Cerebrum b. Cerebellum
c. Thalamus d. Hypothalamus
3. Which of the following acts as
thermoregulator?
a. Pons b. Cerebrum
c. Thalamus d. Hypothalamus
4. Receptors
for hearing come under heading of:
a. Chemical b. Mechanical
c. Photo d. None of these
5. Myelin
sheath surrounding neuron fibers is made of:
a. Carbohydrates b. Proteins
c. Lipids d. Fats
6. Insufficient
secretion of iodothyroxine in adults causes:
a. Myxoedema b. Cretinism
c. Goiter d. Exopthalmic goiter
7. If
plants are grown without light, they become extremely long and fail to from
chlorophyll, they are called:
a. Necrotic b. Etiolated
c. Chlorotic d. Achlorophyllous
8. Which one
is selective weed killer?
a. iAA b. NAA
c. 2, 4 – D d. 2, 4 - T
9. A reflex
arc involves:
a. Sensory neuron b. Motor
neuron
c. Associative neuron d. All of above
10. Which one is
not related to resting membrane potential?
a. Sodium & potassium ions b. 0.05 volts
c. Negative organic ions d. Leakage of K+ from neurons
11. Effective
drug available for parkinson’s disease is:
a. Nicotine b. GDNF
c. L – Dopa d. AZT
12. The
most important test in the study of epilepsy is:
a. Electroencephalography b. Angiography
c. Electronography d. C.T.
Scan
13. Which one is
not a steroid hormone:
a. Oestrogens b. Cortisone
c. Testosterone d. Vasopressin
14. Melanophore stimulating hormone is
secreted in excess amount in:
a. Parkinson’s
disease b. Disease
c. Epilepsy d. Alzheimer’s disease
15. Coordination results in;
c. Integration
of body functions d. All of these
16. Hydra has no:
a. Glandular
cells b. True muscles
c. Nerve
cells d. All of these
17. Coordination in man is
brought about by:
a. Nervous
system b. Endocrine glands
c. Both a
& b d. None of these
18. Reflex actions below the neck are under
control of:
a. Brain b. Spinal cord
c. Both of
these d. None of these
19. Under resting membrane potentials
a. Outer
surface of neuron is more positive
b. Inner
surface of neuron is more positive
c. Both of
these surfaces are equally positive
d. None of
above
20. What is the function of synapse?
a. To allow
nerve impulse to move in backward direction
b. To
decrease the nerve impulse
c. To stop
the nerve impulse
d. None of
these
21. Which of the following extensions carry
the message toward the cell body?
a. Dendrites b. Axon
c. Both a
& b d. None of these
22. Which of the following neurons has a
single dendron?
a. Sensory
neuron b. Motor neuron
c. Both a
& b d. Associative neuron
23. In which of the following neurons length
of dendron is greater than axon
a. Sensory
neuron b. Motor neuron
c. Associative
neuron d. None of these
24. Which of the following is largest part of
brain?
a. Cerebellum b. Cerebrum
c. Medula
oblongata d. None of these
25. Which of the following controls the
volume of urine excreted?
a. Thyroxin b. Oestrogens
c. Vasopressin d. Glucagon
26. Conditioned reflex type II is also known
as:
a. Habituation b. Imprinting
c. Trial and
error d. Latent learning
27. Cell bodies of motor
neurons constitute:
a. Dorsal
root ganglion b. Ventral root ganglion
c. Anterior
root ganglion d. Posterior root ganglion
28. All spinal nerves are:
a. Sensory b. Motor
c. Mixed d. Any of them
29. Vaga nerve is involved in the formation
of:
a. Somatic
nervous system b. Parasympathetic nervous system
c. Sympathetic
nervous system d. None of them
30. Alzheimer’s disease may appear due to
high levels of:
a. Calcium b. Magnesium
c. Potassium d. Aluminium
31. Hormone effect on the biochemical
reactions is:
a. Initiating b. Acceleratory
c. Inhibitory d. Regulatory
32. Abnormally more
development of hands feet and Jaws is known as:
a. Acromegaly b. Microcephaly
c. Cleft
palate d. Polydactyle
33. There is a common hypothalamic releasing
factor for:
a. FSH / LH
/ LTH b. LH / LTH / PIH
c. PIH / LH
/ Oestrogens d. FSH / LH / ICSH
34. Which is not the way of depressing blood
glucose level by insulin?
a.
Increasing glycogen synthesis
b.
Increasing cell utilization of glucose
c.
Conversion of glucose into lipid and protein
d.
Conversion of excessive glucose into lipids
35. Cortisol increases blood glucose level by
the metabolism of:
a. Carbohydrates b. Proteins
c. Lipids d. All of them
36. Which is an irreversible behaviour
learned by an animal?
a. Habituation b. Insight learning
c. Imprinting d. Operant conditioning
37. The main difference
between nervous & endocrine coordination is
a. Use of
nerve impulse & hormone
b. Short
term & long term activities
c. Control
by brain & endocrine glands
d. None of
the above
38. The learning based on manipulation of
mental concepts is:
a. Habituation b. Latent learning
c. Imprinting d. Insight learning
39. The Hormone which delays senescence in
lettuce is:
a. Auxins b. Gibberellins
c. Cytokinins d. Abscisic acid
40. The main neurotransmitter in brain is:
a. Seratonin b. Acetylcholine
c. Aldosterone d. Adrenalin
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