1. 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
2. Organic Substances which, in very small amounts, control growth and development called
A. vitamins
B. hormones
C. enzymes
D. None of the above
3. Our major foods, fibres, spices, fruits and beverage crops are
A. flowering plants
B. gymnosperms plants
C. pteridophytes
D. bryophytes
4.Movements due to light are shown by
A. flowering plants
B. lower plants
C. all land plants
D. all the plants
5. Outer covering of virus made up of protein is
A. capsid
B. coat
C. virion
D. viriod
6. Radish is a
A. bulb
B. conn
C. modified root
D. tuber
ANSWERS:
1. Answer: Option D
2. Answer: Option B
3. Answer: Option A
4. Answer: Option A
5. Answer: Option A
6. Answer: Option C
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