55.
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
Answer & Explanation
Answer: Option D
Explanation:
No answer description available for this question. Let us discuss.
View Answer Workspace Report Discuss in Forum
56.
Organic Substances which, in very small amounts, control growth and development called
A. vitamins B. hormones
C. enzymes D. None of the above
Answer & Explanation
Answer: Option B
Explanation:
No answer description available for this question. Let us discuss.
View Answer Workspace Report Discuss in Forum
57.
Our major foods, fibres, spices, fruits and beverage crops are
A. flowering plants
B. gymnosperms plants
C. pteridophytes
D. bryophytes
Answer & Explanation
Answer: Option A
Explanation:
No answer description available for this question. Let us discuss.
View Answer Workspace Report Discuss in Forum
58.
Movements due to light are shown by
A. flowering plants
B. lower plants
C. all land plants
D. all the plants
Answer & Explanation
Answer: Option A
Explanation:
No answer description available for this question. Let us discuss.
View Answer Workspace Report Discuss in Forum
59.
Outer covering of virus made up of protein is
A. capsid B. coat
C. virion D. viriod
Answer & Explanation
Answer: Option A
Explanation:
No answer description available for this question. Let us discuss.
View Answer Workspace Report Discuss in Forum
60.
Radish is a
A. bulb
B. conn
C. modified root
D. tuber
Answer & Explanation
Answer: Option C
Explanation:
No answer description available for this question.