Q. Radioactivity is a phenomenon of the spontaneous emission of
(A)
protons (alpha particles)
(B)
electrons (beta particles)
(C)
gamma rays (short wave electromagnetic waves)
(D)
All of the above
✅ Correct Answer: (D)
All of the above
Q. Organic Substances which, in very small amounts, control growth and development called
(A)
vitamins
(B)
hormones
(C)
enzymes
(D)
None of the above
✅ Correct Answer: (B)
hormones
Q. Our major foods, fibres, spices, fruits and beverage crops are
(A)
flowering plants
(B)
gymnosperms plants
(C)
pteridophytes
(D)
bryophytes
✅ Correct Answer: (A)
flowering plants
Q. Movements due to light are shown by
(A)
flowering plants
(B)
lower plants
(C)
all land plants
(D)
all the plants
✅ Correct Answer: (A)
flowering plants
Q. Outer covering of virus made up of protein is
(A)
capsid
(B)
coat
(C)
virion
(D)
viriod
✅ Correct Answer: (A)
capsid
Q. Radish is a
(A)
bulb
(B)
conn
(C)
modified root
(D)
tuber
✅ Correct Answer: (C)
modified root
Q. Most common disease of poultry in India is
(A)
fowl pox
(B)
tick fever
(C)
ranikhet
(D)
coryza
✅ Correct Answer: (C)
ranikhet
Q. Most abundant tissues of our body are
(A)
muscular
(B)
connective
(C)
epithelial
(D)
nervous
✅ Correct Answer: (B)
connective
Q. Rain water helps to increase the ____ to some extent.
(A)
phosphorous contents
(B)
nitrogen contents
(C)
calcium contents
(D)
potash contents
✅ Correct Answer: (C)
calcium contents
Q. Number of chromosomes in down's syndrome is
(A)
46
(B)
47
(C)
48
(D)
49
Jump to Go
Tags: Biology mcqs, important mcqs of Biology, Biology important Biology mcqs, mcqs on Biology, important mcqs on Biology, mcqs of Biology