biology mcq questions and answers for competitive exams

Ramya_naidu

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biology mcq questions and answers for competitive exams UPSC SSC , SSC CGL, upsc Civils , Entrance exams Online test practice online free Quiz, mock practice online
61.
Lenticels are involved in

a
Food transport
b
Gaseous exchange
c
Photosynthesis
d
Transpiration

62.
The genetic material in virus is

a
DNA or RNA
b
RNA only
c
DNA only
d
None of these

63.
The deficiency of which of the following leads to dental caries?

a
Copper
b
Iron
c
Zinc
d
Fluorine

64.
Primary phloem develops from

a
lateral meristem
b
protoderm
c
extrastelar cambium
d
provascular tissue

65.
10 gram of haemoglobin/100 gram of blood

a
10 gram of haemoglobin/100 gram of blood
b
14 gram of haemoglobin/100 gram of blood
c
18 gram of haemoglobin/100 gram of blood
d
24 gram of haemoglobin/100 gram of blood

66.
Plants that grow in saline water are called

a
halophytes
b
hydrophytes
c
mesophytes
d
thallophytes

67.
Night blindness is cause by lack of which vitamin?

a
Vitamin A
b
Vitamin B
c
Vitamin C
d
Vitamin D

68.
Cancer cells are damaged by radiations while others are not because cancer cells are

a
Starved
b
Different in nature
c
Undergoing rapid divisions
d
None of these

69.
Movement of cell against concentration gradient is called

a
osmosis
b
active transport
c
diffusion
d
passive transport

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