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MOST IMPORTANT general science mcq - 6 EXERCISES
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The following question based on physiology of plants, humans and animals topic of general science mcq
(a) ultraviolet radiation
(b) temperature
(c) hormone
(d) pollution
The correct answers to the above question in:
Answer: (c)
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Read more biology Based General Science Questions and Answers
Question : 1
Consider the following statements.
Assertion (A):
During sleep, bright light is undesirable.
Reason (R):
In bright light, production of melatonin in the body is considerably increased.
Select your answer using the codes given below.
Code
a) Both (A) and (R) are true, but (R) is not the correct explanation of (A)
b) (A) is true, but (R) is false
c) Both (A) and (R) are true and (R) is the correct explanation of (A)
d) (A) is false, but (R) is true
Answer »Answer: (b)
Question : 2
Other function performed by kidney apart from excretion is
a) Temperature regulation
b) Osmoregulation
c) Hormonal regulation
d) Spermatogenesis
Answer »Answer: (b)
Besides removing the metabolic wastes and impurities from the blood the kidney also perform the important function of osmoregulation (regulation of osmolality) by regulating the amount of water in body fluids.
Question : 3
Thymosin stimulates
a) erythrocytes
b) milk secretion
c) T-lymphocytes
d) melanocytes
Answer »Answer: (c)
Question : 4
Consider the following statements :
- They are small, cylindrical, branched and the fibers have broad ends.
- Special electrical junctions called “intercalated discs” are present at intervals in the fibers.
- The muscles show undergo contractions.
- They are involuntary muscle fibers. They are not under the control of one’s will.
a) 1, 2 and 3
b) 2 and 4
c) 1 and 2
d) 1, 2, 3 and 4
Answer »Answer: (d)
Question : 5
The force responsible for upward conduction of water against gravity comes from
a) translocation
b) respiration
c) transpiration
d) photosynthesis
Answer »Answer: (c)
Question : 6
Neurons receive signals through their __________ and send signals to other neurons through their __________.
a) end feet ... cell bodies and dendrites
b) dendrites ... receptors
c) cell bodies and dendrites ... axons
d) transmitter vesicles ... axons
Answer »Answer: (c)
Dendrites generally receive inputs and conduct signals toward the cell body, whereas axons conduct signals away from the cell body.
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