set 3 MCQ Questions & Answers Detailed Explanation
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The following question based on physiology of plants, humans and animals topic of general science mcq
(a) erythrocytes
(b) milk secretion
(c) T-lymphocytes
(d) melanocytes
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
Percentage of oxygen supplied by haemoglobin is
a) 100%
b) 97%
c) 49%
d) 3%
Answer »Answer: (b)
About 97% of oxygen is carried in combination with haemoglobin of the erythrocytes to form oxyhaemoglobin.
Question : 2
Growth is primarily affected by two climatic factors which are –
a) Temperature and relative humidity
b) Light and wind
c) Light and temperature
d) Rainfall and temperature
Answer »Answer: (c)
Question : 3
The pH of blood is
a) between 2-4
b) between 7-8
c) between 12-14
d) between 2-5
Answer »Answer: (b)
Blood is an opaque, mobile connective tissue fluid which has a salty taste. the pH of blood is between 7-8.
Hence, the blood possesses a slightly alkaline pH.
Question : 4
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 : 5
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 : 6
Appearance of facial hairs in a woman may be due to the effect of
a) ultraviolet radiation
b) temperature
c) hormone
d) pollution
Answer »Answer: (c)
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