Saturday, April 20, 2019

WBCS Polity and Constitution MCQs Prelims and Mains

WBCS Practice Sets on General Science (Biology) P17


Page 17

1272161. Which of the gland that holds the body's thermostat?
A
Pineal
B
Pituitary
C
Thyroid
D
Hypothalamus
D
Correct Answer: D. Hypothalamus
1251162. Grub is the larva of
A
Beetle
B
Sponges
C
Insects
D
Crustacea
A
Correct Answer: A. Beetle
1422163. Fruit fall can be prevented by spraying
A
Cytokinins
B
NAA
C
IAA
D
Abscisic acid
C
Correct Answer: C. IAA
1419164. Natural Selection' is the theory from
A
T. H. Morgan
B
Charles Darwin
C
G. J. Mendel
D
None of the above
B
Correct Answer: B. Charles Darwin
1293165. Which one of the following is not a true fruit?
A
Apple
B
Grape
C
Date
D
Plum
A
Correct Answer: A. Apple
Explanation:

The true fruit can be defined as the fruit, which is formed from the fertilized ovary of the flower. Examples: Watermelon, lemon, cherry, blueberries are all examples of true fruits.

The false fruits can be defined as the fruit, which is formed from the ripened ovary along with some other parts of the flower-like the base or receptacle, the perianth, etc.

Examples: Apple, banana, cashews, strawberry, are all examples of false fruits. This is the reason why apples and cashews are called false fruits and not true fruit. Because these false fruits are formed the ovary along with other accessory floral parts

1344166. The amount of blood in the blood circulatory system a man is
A
Five liters
B
Ten liters
C
One Liter
D
Two liters
A
Correct Answer: A. Five liters
2531167. Which of the following is not the impact of deforestation in India?
A
drying of water resources in mountains
B
loss of bio-diversity
C
urbanisation
D
soil erosion
C
Correct Answer: C. urbanisation
1319168. The Kala-azar disease in man is spread by the bite of a
A
Cimex bed-dug
B
Sarcoptes mite
C
Culex mosquito
D
Phlebotomus sandfly
D
Correct Answer: D. Phlebotomus sandfly
1324169. Antibodies are synthesized by
A
Liver
B
Kidney
C
Bone marrow
D
Plasma and Lymph
D
Correct Answer: D. Plasma and Lymph
1391170. The nitrogen base absent in DNA
A
Thymine
B
Cytosine
C
Uracil
D
Adenine
C
Correct Answer: C. Uracil



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