Biology Questions and answers

  1. General Science
    1. Assertions and Reasons
    2. Biology
    3. Chemistry
    4. Physics
    5. Inventions
11). Mutation is
A). a factor responsible for plant growth
B). a change which affects the offspring of F2 generation only
C). a change that is inherited
D). a change which affects the parents
12). Oxyreductases, transferases, hydrolases, lyases, isomerases and ligases are all classes of
A). hormones
B). enzymes
C). proteins
D). vitamins
13). Radish is a
A). bulb
B). conn
C). modified root
D). tuber
14). Outer covering of virus made up of protein is
A). capsid
B). coat
C). virion
D). viriod
15). Movements due to light are shown by
A). flowering plants
B). lower plants
C). all land plants
D). all the plants

16). Our major foods, fibres, spices, fruits and beverage crops are
A). flowering plants
B). gymnosperms plants
C). pteridophytes
D). bryophytes
17). Organic Substances which, in very small amounts, control growth and development called
A). vitamins
B). hormones
C). enzymes
D). None of the above
18). 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
19). Plants that grow under average temperature and moisture are called
A). halophytes
B). hydrophytes
C). mesophytes
D). xerophytes
20). One day you wake with a sore throat and a runny nose. Your doctor takes a swab from your throat, sends it to a lab, and telephones you the next day to say that antibiotic will not help you get better. Which of the following is the most likely reason for the doctor's statement?
A). Having waited a day, it is too late to take an antibiotic
B). You need an antiseptic, not an antibiotic
C). You need to be vaccinated instead of taking an antibiotic
D). You are infected by a virus
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